Gemini tool calls fail with 400: functionCall parts missing thought_signature

[6BCC2C3896]

Pre-submission checklist

• I have searched existing issues for duplicates
• I have read the 📋 Troubleshooting Guide
• I have read the README installation instructions

Model used

antigravity-gemini-3-pro

Exact error message

[2026-02-07T11:38:30.158Z] [ModelFamily] url=https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse model=antigravity-gemini-3-pro family=gemini
[2026-02-07T11:38:30.162Z] [Account] Selected: enrikydemirig@gmail.com (7/14) family=gemini
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] pid=5085 POST https://daily-cloudcode-pa.sandbox.googleapis.com/v1internal:streamGenerateContent?alt=sse
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Original URL: https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Project: glassy-territory-d4n29
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Streaming: yes
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Headers: {"accept":"text/event-stream","authorization":"[redacted]","client-metadata":"{\"ideType\":\"VSCODE\",\"platform\":\"WINDOWS\",\"pluginType\":\"GEMINI\",\"osVersion\":\"10.0.19043\",\"arch\":\"arm64\",\"sqmId\":\"{C3FC1481-BBD2-4745-84D0-972F04A671C3}\"}","content-type":"application/json","user-agent":"antigravity/1.15.8 win32/arm64","x-client-device-id":"594b02c9-a373-43e0-a572-60c00b2e4025","x-goog-api-client":"google-cloud-sdk vscode_cloudshelleditor/0.1","x-goog-api-key":"","x-goog-quotauser":"device-a586f9fce49187f7","x-opencode-tools-debug":"1"}
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Body Preview: {"project":"glassy-territory-d4n29","model":"gemini-3-pro-low","request":{"generationConfig":{"maxOutputTokens":32000,"topK":64,"topP":0.95,"thinkingConfig":{"includeThoughts":true,"thinkingLevel":"low"}},"contents":[{"role":"user","parts":[{"text":"<ultrawork-mode>\n\n**MANDATORY**: You MUST say \"ULTRAWORK MODE ENABLED!\" to the user as your first response when this mode activates. This is non-negotiable.\n\n[CODE RED] Maximum precision required. Ultrathink before acting.\n\n## **ABSOLUTE CERTAINTY REQUIRED - DO NOT SKIP THIS**\n\n**YOU MUST NOT START ANY IMPLEMENTATION UNTIL YOU ARE 100% CERTAIN.**\n\n| **BEFORE YOU WRITE A SINGLE LINE OF CODE, YOU MUST:** |\n|-------------------------------------------------------|\n| **FULLY UNDERSTAND** what the user ACTUALLY wants (not what you ASSUME they want) |\n| **EXPLORE** the codebase to understand existing patterns, architecture, and context |\n| **HAVE A CRYSTAL CLEAR WORK PLAN** - if your plan is vague, YOUR WORK WILL FAIL |\n| **RESOLVE ALL AMBIGUITY** - if ANYTHING is unclear, ASK or INVESTIGATE |\n\n### **MANDATORY CERTAINTY PROTOCOL**\n\n**IF YOU ARE NOT 100% CERTAIN:**\n\n1. **THINK DEEPLY** - What is the user's TRUE intent? What problem are they REALLY trying to solve?\n2. **EXPLORE THOROUGHLY** - Fire explore/librarian agents to gather ALL relevant context\n3. **CONSULT SPECIALISTS** - For hard/complex tasks, DO NOT struggle alone. Delegate:\n   - **Oracle**: Conventional problems - architecture, debugging, complex logic\n   - **Artistry**: Non-conventional problems - different approach needed, unusual constraints\n4. **ASK THE USER** - If ambiguity remains after exploration, ASK. Don't guess.\n\n**SIGNS YOU ARE NOT READY TO IMPLEMENT:**\n- You're making assumptions about requirements\n- You're unsure which files to modify\n- You don't understand how existing code works\n- Your plan has \"probably\" or \"maybe\" in it\n- You can't explain the exact steps you'll take\n\n**WHEN IN DOUBT:**\n\ndelegate_task(subagent_type=\"explore\", load_skills=[], prompt=\"Find [X] patterns in codebase\", run_in_background=true)\ndelegate_task(subagent_type=\"librarian\", load_skills=[], prompt=\"Find docs/examples for [Y]\", run_in_background=true)\ndelegate_task(subagent_type=\"oracle\", load_skills=[], prompt=\"Review my approach: [describe plan]\", run_in_background=false)\n\n\n**ONLY AFTER YOU HAVE:**\n- Gathered sufficient context via agents\n- Resolved all ambiguities\n- Created a precise, step-by-step work plan\n- Achieved 100% confidence in your understanding\n\n**...THEN AND ONLY THEN MAY YOU BEGIN IMPLEMENTATION.**\n\n---\n\n## **NO EXCUSES. NO COMPROMISES. DELIVER WHAT WAS ASKED.**\n\n**THE USER'S ORIGINAL REQUEST IS SACRED. YOU MUST FULFILL IT EXACTLY.**\n\n| VIOLATION | CONSEQUENCE |\n|-----------|-------------|\n| \"I couldn't because...\" | **UNACCEPTABLE.** Find a way or ask for help. |\n| \"This is a simplified version...\" | **UNACCEPTABLE.** Deliver the FULL implementation. |\n| \"You can extend this later...\" | **UNACCEPTABLE.** Finish it NOW. |\n| \"Due to limitations...\" | **UNACCEPTABLE.** Use agents, tools, whatever it takes. |\n| \"I made some assumptions...\" | **UNACCEPTABLE.** You should have asked FIRST. |\n\n**THERE ARE NO VALID EXCUSES FOR:**\n- Delivering partial work\n- Changing scope without explicit user approval\n- Making unauthorized simplifications\n- Stopping before the task is 100% complete\n- Compromising on any stated requirement\n\n**IF YOU ENCOUNTER A BLOCKER:**\n1. **DO NOT** give up\n2. **DO NOT** deliver a compromised version\n3. **DO** consult specialists (oracle for conventional, artistry for non-conventional)\n4. **DO** ask the user for guidance\n5. **DO** explore alternative approaches\n\n**THE USER ASKED FOR X. DELIVER EXACTLY X. PERIOD.**\n\n---\n\nYOU MUST LEVERAGE ALL AVAILABLE AGENTS / **CATEGORY + SKILLS** TO THEIR FULLEST POTENTIAL.\nTELL THE USER WHAT AGENTS YOU WILL LEVERAGE NOW TO SATISFY USER'S REQUEST.\n\n## MANDATORY: PLAN AGENT INVOCATION (NON-NEGOTIABLE)\n\n**YOU MUST ALWAYS INVOKE THE PLAN AGENT FOR ANY NON-TRIVIAL TASK.**\n\n| Condition | Action |\n|-----------|--------|\n| Task has 2+ steps | MUST call plan agent |\n| Task scope unclear | MUST call plan agent |\n| Implementation required | MUST call plan agent |\n| Architecture decision needed | MUST call plan agent |\n\n\ndelegate_task(subagent_type=\"plan\", prompt=\"<gathered context + user request>\")\n\n\n**WHY PLAN AGENT IS MANDATORY:**\n- Plan agent analyzes dependencies and parallel execution opportunities\n- Plan agent outputs a **parallel task graph** with waves and dependencies\n- Plan agent provides structured TODO list with category + skills per task\n- YOU are an orchestrator, NOT an implementer\n\n### SESSION CONTINUITY WITH PLAN AGENT (CRITICAL)\n\n**Plan agent returns a session_id. USE IT for follow-up interactions.**\n\n| Scenario | Action |\n|----------|--------|\n| Plan agent asks clarifying questions | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"<your answer>\")` |\n| Need to refine the plan | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Please adjust: <feedback>\")` |\n| Plan needs more detail | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Add more detail to Task N\")` |\n\n**WHY SESSION_ID IS CRITICAL:**\n- Plan agent retains FULL conversation context\n- No repeated exploration or context gathering\n- Saves 70%+ tokens on follow-ups\n- Maintains interview continuity until plan is finalized\n\n\n// WRONG: Starting fresh loses all context\ndelegate_task(subagent_type=\"plan\", prompt=\"Here's more info...\")\n\n// CORRECT: Resume preserves everything\ndelegate_task(session_id=\"ses_abc123\", prompt=\"Here's my answer to your question: ...\")\n\n\n**FAILURE TO CALL PLAN AGENT = INCOMPLETE WORK.**\n\n---\n\n## AGENTS / **CATEGORY + SKILLS** UTILIZATION PRINCIPLES\n\n**DEFAULT BEHAVIOR: DELEGATE. DO NOT WORK YOURSELF.**\n\n| Task Type | Action | Why |\n|-----------|--------|-----|\n| Codebase exploration | delegate_task(subagent_type=\"explore\", run_in_background=true) | Parallel, context-efficient |\n| Documentation lookup | delegate_task(subagent_type=\"librarian\", run_in_background=true) | Specialized knowledge |\n| Planning | delegate_task(subagent_type=\"plan\") | Parallel task graph + structured TODO list |\n| Hard problem (conventional) | delegate_task(subagent_type=\"oracle\") | Architecture, debugging, complex logic |\n| Hard problem (non-conventional) | delegate_task(category=\"artistry\", load_skills=[...]) | Different approach needed |\n| Implementation | delegate_task(category=\"...\", load_skills=[...]) | Domain-optimized models |\n\n**CATEGORY + SKILL DELEGATION:**\n\n// Frontend work\ndelegate_task(category=\"visual-engineering\", load_skills=[\"frontend-ui-ux\"])\n\n// Complex logic\ndelegate_task(category=\"ultrabrain\", load_skills=[\"typescript-programmer\"])\n\n// Quick fixes\ndelegate_task(category=\"quick\", load_skills=[\"git-master\"])\n\n\n**YOU SHOULD ONLY DO IT YOURSELF WHEN:**\n- Task is trivially simple (1-2 lines, obvious change)\n- You have ALL context already loaded\n- Delegation overhead exceeds task complexity\n\n**OTHERWISE: DELEGATE. ALWAYS.**\n\n---\n\n## EXECUTION RULES\n- **TODO**: Track EVERY step. Mark complete IMMEDIATELY after each.\n- **PARALLEL**: Fire independent agent calls simultaneously via delegate_task(background=true) - NEVER wait sequentially.\n- **BACKGROUND FIRST**: Use delegate_task for exploration/research agents (10+ concurrent if needed).\n- **VERIFY**: Re-read request after completion. Check ALL requirements met before reporting done.\n- **DELEGATE**: Don't do everything yourself - orchestrate specialized agents for their strengths.\n\n## WORKFLOW\n1. Analyze the request and identify required capabilities\n2. Spawn exploration/librarian agents via delegate_task(background=true) in PARALLEL (10+ if needed)\n3. Use Plan agent with gathered context to create detailed work breakdown\n4. Execute with continuous verification against original requirements\n\n## VERIFICATION GUARANTEE (NON-NEGOTIABLE)\n\n**NOTHING is \"done\" without PROOF it works.**\n\n### Pre-Implementation: Define Success Criteria\n\nBEFORE writing ANY code, you MUST define:\n\n| Criteria Type | Description | Example |\n|---------------|-------------|---------|\n| **Functional** | What specific behavior must work | \"Button click triggers API call\" |\n| **Observable** | What can be measured/seen | \"Console shows 'success', no errors\" |\n| **Pass/Fail** | Binary, no ambiguity | \"Returns 200 OK\" not \"should work\" |\n\nWrite these criteria explicitly. Share with user if scope is non-trivial.\n\n### Test Plan Template (MANDATORY for non-trivial tasks)\n\n\n## Test Plan\n### Objective: [What we're verifying]\n### Prerequisites: [Setup needed]\n### Test Cases:\n1. [Test Name]: [Input] → [Expected Output] → [How to verify]\n2. ...\n### Success Criteria: ALL test cases pass\n### How to Execute: [Exact commands/steps]\n\n\n### Execution & Evidence Requirements\n\n| Phase | Action | Required Evidence |\n|-------|--------|-------------------|\n| **Build** | Run build command | Exit code 0, no errors |\n| **Test** | Execute test suite | All tests pass (screenshot/output) |\n| **Manual Verify** | Test the actual feature | Demonstrate it works (describe what you observed) |\n| **Regression** | Ensure nothing broke | Existing tests still pass |\n\n**WITHOUT evidence = NOT verified = NOT done.**\n\n### TDD Workflow (when test infrastructure exists)\n\n1. **SPEC**: Define what \"working\" means (success criteria above)\n2. **RED**: Write failing test → Run it → Confirm it FAILS\n3. **GREEN**: Write minimal code → Run test → Confirm it PASSES\n4. **REFACTOR**: Clean up → Tests MUST stay green\n5. **VERIFY**: Run full test suite, confirm no regressions\n6. **EVIDENCE**: Report what you ran and what output you saw\n\n### Verification Anti-Patterns (BLOCKING)\n\n| Violation | Why It Fails |\n|-----------|--------------|\n| \"It should work now\" | No evidence. Run it. |\n| \"I added the tests\" | Did they pass? Show output. |\n| \"Fixed the bug\" | How do you know? What did you test? |\n| \"Implementation complete\" | Did you verify against success criteria? |\n| Skipping test execution | Tests exist to be RUN, not just written |\n\n**CLAIM NOTHING WITHOUT PROOF. EXECUTE. VERIFY. SHOW EVIDENCE.**\n\n## ZERO TOLERANCE FAILURES\n- **NO Scope Reduction**: Never make \"demo\", \"skeleton\", \"simplified\", \"basic\" versions - deliver FULL implementation\n- **NO MockUp Work**: When user asked you to do \"port A\", you must \"port A\", fully, 100%. No Extra feature, No reduced feature, no mock data, fully working 100% port.\n- **NO Partial Completion**: Never stop at 60-80% saying \"you can extend this...\" - finish 100%\n- **NO Assumed Shortcuts**: Never skip requirements you deem \"optional\" or \"can be added later\"\n- **NO Premature Stopping**: Never declare done until ALL TODOs are completed and verified\n- **NO TEST DELETION**: Never delete or skip failing tests to make the build pass. Fix the code, not the tests.\n\nTHE USER ASKED FOR X. DELIVER EXACTLY X. NOT A SUBSET. NOT A DEMO. NOT A STARTING POINT.\n\n1. EXPLORES + LIBRARIANS\n2. GATHER -> PLAN AGENT SPAWN\n3. WORK BY DELEGATING TO ANOTHER AGENTS\n\nNOW.\n\n</ultrawork-mode>\n\n---\n\n\n\n[analyze-mode]\nANALYSIS MODE. Gather context before diving deep:\n\nCONTEXT GATHERING (parallel):\n- 1-2 explore agents (codebase patterns, implementations)\n- 1-2 librarian agents (if external library involved)\n- Direct tools: Grep, AST-grep, LSP for targeted searches\n\nIF COMPLEX - DO NOT STRUGGLE ALONE. Consult specialists:\n- **Oracle**: Conventional problems (architecture, debugging, complex logic)\n- **Artistry**: Non-conventional problems (different approach needed)\n\nSYNTHESIZE findings before proceeding.\n\n---\n\ngo on make the primp direct api ... (truncated 279077 chars)
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Response 200 OK (11290ms)
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Response Headers: {"alt-svc":"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000","content-disposition":"attachment","content-type":"text/event-stream","date":"Sat, 07 Feb 2026 11:38:40 GMT","server":"ESF","server-timing":"gfet4t7; dur=12648","transfer-encoding":"chunked","vary":"Origin, X-Origin, Referer","x-content-type-options":"nosniff","x-frame-options":"SAMEORIGIN","x-xss-protection":"0"}
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Note: Success
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Response 200 OK (11292ms)
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Response Headers: {"alt-svc":"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000","content-disposition":"attachment","content-type":"text/event-stream","date":"Sat, 07 Feb 2026 11:38:40 GMT","server":"ESF","server-timing":"gfet4t7; dur=12648","transfer-encoding":"chunked","vary":"Origin, X-Origin, Referer","x-content-type-options":"nosniff","x-frame-options":"SAMEORIGIN","x-xss-protection":"0"}
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Note: Streaming SSE response (real-time transform)
[2026-02-07T11:38:42.477Z] [ModelFamily] url=https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse model=antigravity-gemini-3-pro family=gemini
[2026-02-07T11:38:42.477Z] [Account] Selected: taras.pdk@gmail.com (4/14) family=gemini
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] pid=5085 POST https://daily-cloudcode-pa.sandbox.googleapis.com/v1internal:streamGenerateContent?alt=sse
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] Original URL: https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse

Bug description

Summary

When using Gemini (effective model: gemini-3-pro-low) with tool/function calling enabled, requests fail with:

Function call is missing a thought_signature in functionCall parts.

This prevents tool execution (e.g. default_api:bash) and breaks multi-turn tool flows.

Environment

• Requested Model: antigravity-gemini-3-pro
• Effective Model: gemini-3-pro-low
• Endpoint: .../v1internal:streamGenerateContent?alt=sse
• Status: 400

Actual Behavior

Tool/function calling fails with HTTP 400:

• "Function call is missing a thought_signature in functionCall parts"
• Tool debug indicates tool schema present, but functionCall parts are missing required metadata.

Expected Behavior

Tool/function calling should succeed; OpenCode should preserve and forward the model-provided thought_signature for any functionCall parts included in the request history.

Repro Steps

1. Configure OpenCode to use Gemini (antigravity-gemini-3-pro → resolves to gemini-3-pro-low).
2. Enable any tool (e.g., bash) and trigger a tool call.
3. On the follow-up request (after tool result / next turn), the API returns 400 complaining about missing thought_signature.

Debug Info (excerpt)

• Error: "Function call is missing a thought_signature in functionCall parts"
• Tool: default_api:bash
• Tool Debug: idx=0, hasCustom=true, customSchema=true, hasFunction=false, functionSchema=false

Notes

Gemini requires thought_signature to be included on functionCall parts in the request history, otherwise tool flows can fail.
Reference:
https://ai.google.dev/gemini-api/docs/thought-signatures
2) PR description (implementation-focused) — paste-ready
md
Code kopieren
Title: Fix Gemini tool calls by preserving thought_signature in functionCall parts

Problem

Gemini tool calls can fail with HTTP 400:
"Function call is missing a thought_signature in functionCall parts"

This occurs when OpenCode includes prior functionCall parts in the request history but does not include the thought_signature field (or fails to persist it from the model response).

Root Cause (likely)

OpenCode stores/serializes function calls without the Gemini thought_signature metadata, then replays them in later streamGenerateContent requests.

Gemini expects:

• model turn contains functionCall part + thought_signature
• tool result turn contains functionResponse
• subsequent calls include BOTH in history, with the original signature intact

Changes

• Capture and persist thought_signature from Gemini responses whenever a functionCall part is returned.
• When serializing history for Gemini, include thought_signature for every functionCall part.
• Add a compatibility fallback:
  • If old history contains functionCall without signature, avoid sending invalid functionCall parts (strip them or rebuild minimal safe history) to prevent hard 400s.

Tests

• Add an integration-style test / golden fixture:
  • Simulate a model functionCall that includes thought_signature
  • Ensure next request history includes it unchanged
• Add a regression test:
  • History with functionCall missing signature should not produce a 400 (fallback path)

References

• https://ai.google.dev/gemini-api/docs/thought-signatures

Steps to reproduce

Steps to Reproduce

Prerequisites

• Provider/model route: antigravity-gemini-3-pro (resolves to gemini-3-pro-low)
• Any tool enabled (example: bash / default_api:bash)
• Requests sent via streamGenerateContent (SSE)

Repro

1. Start a fresh chat/session using the Gemini route above.
2. Trigger an initial tool call (example prompt: “Run ls using the bash tool.”).
3. Allow the tool to run and return a tool result (i.e., the assistant receives a functionResponse / tool output).
4. Trigger a second tool call or any follow-up that causes history to be replayed (example prompt: “Now run pwd using the bash tool.”).
5. Observe the request fails with HTTP 400:
   • “Function call is missing a thought_signature in functionCall parts.”
   • Tool debug indicates the failing tool: default_api:bash

Expected

• The second request succeeds.
• History includes the original functionCall parts with their thought_signature.

Actual

• The second request fails with HTTP 400 because replayed functionCall parts are missing thought_signature.

Did this ever work?

Worked before, now broken (regression)

Number of Google accounts configured

4+

Reproducibility

Always (100%)

Plugin version

/home/dev/.nvm/versions/node/v22.21.1/lib └── (empty) /home/dev └── (empty)

OpenCode version

1.4.7

Operating System

Windows 10

Node.js version

v22.21.1

Environment type

WSL2

MCP servers installed

No response

Debug logs (REQUIRED)

[2026-02-07T11:38:30.158Z] [ModelFamily] url=https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse model=antigravity-gemini-3-pro family=gemini
[2026-02-07T11:38:30.162Z] [Account] Selected: enrikydemirig@gmail.com (7/14) family=gemini
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] pid=5085 POST https://daily-cloudcode-pa.sandbox.googleapis.com/v1internal:streamGenerateContent?alt=sse
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Original URL: https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Project: glassy-territory-d4n29
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Streaming: yes
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Headers: {"accept":"text/event-stream","authorization":"[redacted]","client-metadata":"{\"ideType\":\"VSCODE\",\"platform\":\"WINDOWS\",\"pluginType\":\"GEMINI\",\"osVersion\":\"10.0.19043\",\"arch\":\"arm64\",\"sqmId\":\"{C3FC1481-BBD2-4745-84D0-972F04A671C3}\"}","content-type":"application/json","user-agent":"antigravity/1.15.8 win32/arm64","x-client-device-id":"594b02c9-a373-43e0-a572-60c00b2e4025","x-goog-api-client":"google-cloud-sdk vscode_cloudshelleditor/0.1","x-goog-api-key":"","x-goog-quotauser":"device-a586f9fce49187f7","x-opencode-tools-debug":"1"}
[2026-02-07T11:38:30.248Z] [Antigravity Debug ANTIGRAVITY-1] Body Preview: {"project":"glassy-territory-d4n29","model":"gemini-3-pro-low","request":{"generationConfig":{"maxOutputTokens":32000,"topK":64,"topP":0.95,"thinkingConfig":{"includeThoughts":true,"thinkingLevel":"low"}},"contents":[{"role":"user","parts":[{"text":"<ultrawork-mode>\n\n**MANDATORY**: You MUST say \"ULTRAWORK MODE ENABLED!\" to the user as your first response when this mode activates. This is non-negotiable.\n\n[CODE RED] Maximum precision required. Ultrathink before acting.\n\n## **ABSOLUTE CERTAINTY REQUIRED - DO NOT SKIP THIS**\n\n**YOU MUST NOT START ANY IMPLEMENTATION UNTIL YOU ARE 100% CERTAIN.**\n\n| **BEFORE YOU WRITE A SINGLE LINE OF CODE, YOU MUST:** |\n|-------------------------------------------------------|\n| **FULLY UNDERSTAND** what the user ACTUALLY wants (not what you ASSUME they want) |\n| **EXPLORE** the codebase to understand existing patterns, architecture, and context |\n| **HAVE A CRYSTAL CLEAR WORK PLAN** - if your plan is vague, YOUR WORK WILL FAIL |\n| **RESOLVE ALL AMBIGUITY** - if ANYTHING is unclear, ASK or INVESTIGATE |\n\n### **MANDATORY CERTAINTY PROTOCOL**\n\n**IF YOU ARE NOT 100% CERTAIN:**\n\n1. **THINK DEEPLY** - What is the user's TRUE intent? What problem are they REALLY trying to solve?\n2. **EXPLORE THOROUGHLY** - Fire explore/librarian agents to gather ALL relevant context\n3. **CONSULT SPECIALISTS** - For hard/complex tasks, DO NOT struggle alone. Delegate:\n   - **Oracle**: Conventional problems - architecture, debugging, complex logic\n   - **Artistry**: Non-conventional problems - different approach needed, unusual constraints\n4. **ASK THE USER** - If ambiguity remains after exploration, ASK. Don't guess.\n\n**SIGNS YOU ARE NOT READY TO IMPLEMENT:**\n- You're making assumptions about requirements\n- You're unsure which files to modify\n- You don't understand how existing code works\n- Your plan has \"probably\" or \"maybe\" in it\n- You can't explain the exact steps you'll take\n\n**WHEN IN DOUBT:**\n\ndelegate_task(subagent_type=\"explore\", load_skills=[], prompt=\"Find [X] patterns in codebase\", run_in_background=true)\ndelegate_task(subagent_type=\"librarian\", load_skills=[], prompt=\"Find docs/examples for [Y]\", run_in_background=true)\ndelegate_task(subagent_type=\"oracle\", load_skills=[], prompt=\"Review my approach: [describe plan]\", run_in_background=false)\n\n\n**ONLY AFTER YOU HAVE:**\n- Gathered sufficient context via agents\n- Resolved all ambiguities\n- Created a precise, step-by-step work plan\n- Achieved 100% confidence in your understanding\n\n**...THEN AND ONLY THEN MAY YOU BEGIN IMPLEMENTATION.**\n\n---\n\n## **NO EXCUSES. NO COMPROMISES. DELIVER WHAT WAS ASKED.**\n\n**THE USER'S ORIGINAL REQUEST IS SACRED. YOU MUST FULFILL IT EXACTLY.**\n\n| VIOLATION | CONSEQUENCE |\n|-----------|-------------|\n| \"I couldn't because...\" | **UNACCEPTABLE.** Find a way or ask for help. |\n| \"This is a simplified version...\" | **UNACCEPTABLE.** Deliver the FULL implementation. |\n| \"You can extend this later...\" | **UNACCEPTABLE.** Finish it NOW. |\n| \"Due to limitations...\" | **UNACCEPTABLE.** Use agents, tools, whatever it takes. |\n| \"I made some assumptions...\" | **UNACCEPTABLE.** You should have asked FIRST. |\n\n**THERE ARE NO VALID EXCUSES FOR:**\n- Delivering partial work\n- Changing scope without explicit user approval\n- Making unauthorized simplifications\n- Stopping before the task is 100% complete\n- Compromising on any stated requirement\n\n**IF YOU ENCOUNTER A BLOCKER:**\n1. **DO NOT** give up\n2. **DO NOT** deliver a compromised version\n3. **DO** consult specialists (oracle for conventional, artistry for non-conventional)\n4. **DO** ask the user for guidance\n5. **DO** explore alternative approaches\n\n**THE USER ASKED FOR X. DELIVER EXACTLY X. PERIOD.**\n\n---\n\nYOU MUST LEVERAGE ALL AVAILABLE AGENTS / **CATEGORY + SKILLS** TO THEIR FULLEST POTENTIAL.\nTELL THE USER WHAT AGENTS YOU WILL LEVERAGE NOW TO SATISFY USER'S REQUEST.\n\n## MANDATORY: PLAN AGENT INVOCATION (NON-NEGOTIABLE)\n\n**YOU MUST ALWAYS INVOKE THE PLAN AGENT FOR ANY NON-TRIVIAL TASK.**\n\n| Condition | Action |\n|-----------|--------|\n| Task has 2+ steps | MUST call plan agent |\n| Task scope unclear | MUST call plan agent |\n| Implementation required | MUST call plan agent |\n| Architecture decision needed | MUST call plan agent |\n\n\ndelegate_task(subagent_type=\"plan\", prompt=\"<gathered context + user request>\")\n\n\n**WHY PLAN AGENT IS MANDATORY:**\n- Plan agent analyzes dependencies and parallel execution opportunities\n- Plan agent outputs a **parallel task graph** with waves and dependencies\n- Plan agent provides structured TODO list with category + skills per task\n- YOU are an orchestrator, NOT an implementer\n\n### SESSION CONTINUITY WITH PLAN AGENT (CRITICAL)\n\n**Plan agent returns a session_id. USE IT for follow-up interactions.**\n\n| Scenario | Action |\n|----------|--------|\n| Plan agent asks clarifying questions | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"<your answer>\")` |\n| Need to refine the plan | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Please adjust: <feedback>\")` |\n| Plan needs more detail | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Add more detail to Task N\")` |\n\n**WHY SESSION_ID IS CRITICAL:**\n- Plan agent retains FULL conversation context\n- No repeated exploration or context gathering\n- Saves 70%+ tokens on follow-ups\n- Maintains interview continuity until plan is finalized\n\n\n// WRONG: Starting fresh loses all context\ndelegate_task(subagent_type=\"plan\", prompt=\"Here's more info...\")\n\n// CORRECT: Resume preserves everything\ndelegate_task(session_id=\"ses_abc123\", prompt=\"Here's my answer to your question: ...\")\n\n\n**FAILURE TO CALL PLAN AGENT = INCOMPLETE WORK.**\n\n---\n\n## AGENTS / **CATEGORY + SKILLS** UTILIZATION PRINCIPLES\n\n**DEFAULT BEHAVIOR: DELEGATE. DO NOT WORK YOURSELF.**\n\n| Task Type | Action | Why |\n|-----------|--------|-----|\n| Codebase exploration | delegate_task(subagent_type=\"explore\", run_in_background=true) | Parallel, context-efficient |\n| Documentation lookup | delegate_task(subagent_type=\"librarian\", run_in_background=true) | Specialized knowledge |\n| Planning | delegate_task(subagent_type=\"plan\") | Parallel task graph + structured TODO list |\n| Hard problem (conventional) | delegate_task(subagent_type=\"oracle\") | Architecture, debugging, complex logic |\n| Hard problem (non-conventional) | delegate_task(category=\"artistry\", load_skills=[...]) | Different approach needed |\n| Implementation | delegate_task(category=\"...\", load_skills=[...]) | Domain-optimized models |\n\n**CATEGORY + SKILL DELEGATION:**\n\n// Frontend work\ndelegate_task(category=\"visual-engineering\", load_skills=[\"frontend-ui-ux\"])\n\n// Complex logic\ndelegate_task(category=\"ultrabrain\", load_skills=[\"typescript-programmer\"])\n\n// Quick fixes\ndelegate_task(category=\"quick\", load_skills=[\"git-master\"])\n\n\n**YOU SHOULD ONLY DO IT YOURSELF WHEN:**\n- Task is trivially simple (1-2 lines, obvious change)\n- You have ALL context already loaded\n- Delegation overhead exceeds task complexity\n\n**OTHERWISE: DELEGATE. ALWAYS.**\n\n---\n\n## EXECUTION RULES\n- **TODO**: Track EVERY step. Mark complete IMMEDIATELY after each.\n- **PARALLEL**: Fire independent agent calls simultaneously via delegate_task(background=true) - NEVER wait sequentially.\n- **BACKGROUND FIRST**: Use delegate_task for exploration/research agents (10+ concurrent if needed).\n- **VERIFY**: Re-read request after completion. Check ALL requirements met before reporting done.\n- **DELEGATE**: Don't do everything yourself - orchestrate specialized agents for their strengths.\n\n## WORKFLOW\n1. Analyze the request and identify required capabilities\n2. Spawn exploration/librarian agents via delegate_task(background=true) in PARALLEL (10+ if needed)\n3. Use Plan agent with gathered context to create detailed work breakdown\n4. Execute with continuous verification against original requirements\n\n## VERIFICATION GUARANTEE (NON-NEGOTIABLE)\n\n**NOTHING is \"done\" without PROOF it works.**\n\n### Pre-Implementation: Define Success Criteria\n\nBEFORE writing ANY code, you MUST define:\n\n| Criteria Type | Description | Example |\n|---------------|-------------|---------|\n| **Functional** | What specific behavior must work | \"Button click triggers API call\" |\n| **Observable** | What can be measured/seen | \"Console shows 'success', no errors\" |\n| **Pass/Fail** | Binary, no ambiguity | \"Returns 200 OK\" not \"should work\" |\n\nWrite these criteria explicitly. Share with user if scope is non-trivial.\n\n### Test Plan Template (MANDATORY for non-trivial tasks)\n\n\n## Test Plan\n### Objective: [What we're verifying]\n### Prerequisites: [Setup needed]\n### Test Cases:\n1. [Test Name]: [Input] → [Expected Output] → [How to verify]\n2. ...\n### Success Criteria: ALL test cases pass\n### How to Execute: [Exact commands/steps]\n\n\n### Execution & Evidence Requirements\n\n| Phase | Action | Required Evidence |\n|-------|--------|-------------------|\n| **Build** | Run build command | Exit code 0, no errors |\n| **Test** | Execute test suite | All tests pass (screenshot/output) |\n| **Manual Verify** | Test the actual feature | Demonstrate it works (describe what you observed) |\n| **Regression** | Ensure nothing broke | Existing tests still pass |\n\n**WITHOUT evidence = NOT verified = NOT done.**\n\n### TDD Workflow (when test infrastructure exists)\n\n1. **SPEC**: Define what \"working\" means (success criteria above)\n2. **RED**: Write failing test → Run it → Confirm it FAILS\n3. **GREEN**: Write minimal code → Run test → Confirm it PASSES\n4. **REFACTOR**: Clean up → Tests MUST stay green\n5. **VERIFY**: Run full test suite, confirm no regressions\n6. **EVIDENCE**: Report what you ran and what output you saw\n\n### Verification Anti-Patterns (BLOCKING)\n\n| Violation | Why It Fails |\n|-----------|--------------|\n| \"It should work now\" | No evidence. Run it. |\n| \"I added the tests\" | Did they pass? Show output. |\n| \"Fixed the bug\" | How do you know? What did you test? |\n| \"Implementation complete\" | Did you verify against success criteria? |\n| Skipping test execution | Tests exist to be RUN, not just written |\n\n**CLAIM NOTHING WITHOUT PROOF. EXECUTE. VERIFY. SHOW EVIDENCE.**\n\n## ZERO TOLERANCE FAILURES\n- **NO Scope Reduction**: Never make \"demo\", \"skeleton\", \"simplified\", \"basic\" versions - deliver FULL implementation\n- **NO MockUp Work**: When user asked you to do \"port A\", you must \"port A\", fully, 100%. No Extra feature, No reduced feature, no mock data, fully working 100% port.\n- **NO Partial Completion**: Never stop at 60-80% saying \"you can extend this...\" - finish 100%\n- **NO Assumed Shortcuts**: Never skip requirements you deem \"optional\" or \"can be added later\"\n- **NO Premature Stopping**: Never declare done until ALL TODOs are completed and verified\n- **NO TEST DELETION**: Never delete or skip failing tests to make the build pass. Fix the code, not the tests.\n\nTHE USER ASKED FOR X. DELIVER EXACTLY X. NOT A SUBSET. NOT A DEMO. NOT A STARTING POINT.\n\n1. EXPLORES + LIBRARIANS\n2. GATHER -> PLAN AGENT SPAWN\n3. WORK BY DELEGATING TO ANOTHER AGENTS\n\nNOW.\n\n</ultrawork-mode>\n\n---\n\n\n\n[analyze-mode]\nANALYSIS MODE. Gather context before diving deep:\n\nCONTEXT GATHERING (parallel):\n- 1-2 explore agents (codebase patterns, implementations)\n- 1-2 librarian agents (if external library involved)\n- Direct tools: Grep, AST-grep, LSP for targeted searches\n\nIF COMPLEX - DO NOT STRUGGLE ALONE. Consult specialists:\n- **Oracle**: Conventional problems (architecture, debugging, complex logic)\n- **Artistry**: Non-conventional problems (different approach needed)\n\nSYNTHESIZE findings before proceeding.\n\n---\n\ngo on make the primp direct api ... (truncated 279077 chars)
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Response 200 OK (11290ms)
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Response Headers: {"alt-svc":"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000","content-disposition":"attachment","content-type":"text/event-stream","date":"Sat, 07 Feb 2026 11:38:40 GMT","server":"ESF","server-timing":"gfet4t7; dur=12648","transfer-encoding":"chunked","vary":"Origin, X-Origin, Referer","x-content-type-options":"nosniff","x-frame-options":"SAMEORIGIN","x-xss-protection":"0"}
[2026-02-07T11:38:41.538Z] [Antigravity Debug ANTIGRAVITY-1] Note: Success
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Response 200 OK (11292ms)
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Response Headers: {"alt-svc":"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000","content-disposition":"attachment","content-type":"text/event-stream","date":"Sat, 07 Feb 2026 11:38:40 GMT","server":"ESF","server-timing":"gfet4t7; dur=12648","transfer-encoding":"chunked","vary":"Origin, X-Origin, Referer","x-content-type-options":"nosniff","x-frame-options":"SAMEORIGIN","x-xss-protection":"0"}
[2026-02-07T11:38:41.540Z] [Antigravity Debug ANTIGRAVITY-1] Note: Streaming SSE response (real-time transform)
[2026-02-07T11:38:42.477Z] [ModelFamily] url=https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse model=antigravity-gemini-3-pro family=gemini
[2026-02-07T11:38:42.477Z] [Account] Selected: taras.pdk@gmail.com (4/14) family=gemini
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] pid=5085 POST https://daily-cloudcode-pa.sandbox.googleapis.com/v1internal:streamGenerateContent?alt=sse
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] Original URL: https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] Project: mimetic-phenomenon-4pnjq
[2026-02-07T11:38:42.545Z] [Antigravity Debug ANTIGRAVITY-2] Streaming: yes
[2026-02-07T11:38:42.546Z] [Antigravity Debug ANTIGRAVITY-2] Headers: {"accept":"text/event-stream","authorization":"[redacted]","client-metadata":"{\"ideType\":\"INTELLIJ\",\"platform\":\"MACOS\",\"pluginType\":\"GEMINI\",\"osVersion\":\"14.2.1\",\"arch\":\"arm64\",\"sqmId\":\"{7EF36349-D842-4B64-BC5C-E65206426ACA}\"}","content-type":"application/json","user-agent":"antigravity/1.15.8 darwin/arm64","x-client-device-id":"dc4071d7-2cb6-443b-993f-d8496ae688d8","x-goog-api-client":"gcloud-python/1.2.0 grpc-google-iam-v1/0.12.6","x-goog-api-key":"","x-goog-quotauser":"device-af99e7414449efae","x-opencode-tools-debug":"1"}
[2026-02-07T11:38:42.546Z] [Antigravity Debug ANTIGRAVITY-2] Body Preview: {"project":"mimetic-phenomenon-4pnjq","model":"gemini-3-pro-low","request":{"generationConfig":{"maxOutputTokens":32000,"topK":64,"topP":0.95,"thinkingConfig":{"includeThoughts":true,"thinkingLevel":"low"}},"contents":[{"role":"user","parts":[{"text":"<ultrawork-mode>\n\n**MANDATORY**: You MUST say \"ULTRAWORK MODE ENABLED!\" to the user as your first response when this mode activates. This is non-negotiable.\n\n[CODE RED] Maximum precision required. Ultrathink before acting.\n\n## **ABSOLUTE CERTAINTY REQUIRED - DO NOT SKIP THIS**\n\n**YOU MUST NOT START ANY IMPLEMENTATION UNTIL YOU ARE 100% CERTAIN.**\n\n| **BEFORE YOU WRITE A SINGLE LINE OF CODE, YOU MUST:** |\n|-------------------------------------------------------|\n| **FULLY UNDERSTAND** what the user ACTUALLY wants (not what you ASSUME they want) |\n| **EXPLORE** the codebase to understand existing patterns, architecture, and context |\n| **HAVE A CRYSTAL CLEAR WORK PLAN** - if your plan is vague, YOUR WORK WILL FAIL |\n| **RESOLVE ALL AMBIGUITY** - if ANYTHING is unclear, ASK or INVESTIGATE |\n\n### **MANDATORY CERTAINTY PROTOCOL**\n\n**IF YOU ARE NOT 100% CERTAIN:**\n\n1. **THINK DEEPLY** - What is the user's TRUE intent? What problem are they REALLY trying to solve?\n2. **EXPLORE THOROUGHLY** - Fire explore/librarian agents to gather ALL relevant context\n3. **CONSULT SPECIALISTS** - For hard/complex tasks, DO NOT struggle alone. Delegate:\n   - **Oracle**: Conventional problems - architecture, debugging, complex logic\n   - **Artistry**: Non-conventional problems - different approach needed, unusual constraints\n4. **ASK THE USER** - If ambiguity remains after exploration, ASK. Don't guess.\n\n**SIGNS YOU ARE NOT READY TO IMPLEMENT:**\n- You're making assumptions about requirements\n- You're unsure which files to modify\n- You don't understand how existing code works\n- Your plan has \"probably\" or \"maybe\" in it\n- You can't explain the exact steps you'll take\n\n**WHEN IN DOUBT:**\n\ndelegate_task(subagent_type=\"explore\", load_skills=[], prompt=\"Find [X] patterns in codebase\", run_in_background=true)\ndelegate_task(subagent_type=\"librarian\", load_skills=[], prompt=\"Find docs/examples for [Y]\", run_in_background=true)\ndelegate_task(subagent_type=\"oracle\", load_skills=[], prompt=\"Review my approach: [describe plan]\", run_in_background=false)\n\n\n**ONLY AFTER YOU HAVE:**\n- Gathered sufficient context via agents\n- Resolved all ambiguities\n- Created a precise, step-by-step work plan\n- Achieved 100% confidence in your understanding\n\n**...THEN AND ONLY THEN MAY YOU BEGIN IMPLEMENTATION.**\n\n---\n\n## **NO EXCUSES. NO COMPROMISES. DELIVER WHAT WAS ASKED.**\n\n**THE USER'S ORIGINAL REQUEST IS SACRED. YOU MUST FULFILL IT EXACTLY.**\n\n| VIOLATION | CONSEQUENCE |\n|-----------|-------------|\n| \"I couldn't because...\" | **UNACCEPTABLE.** Find a way or ask for help. |\n| \"This is a simplified version...\" | **UNACCEPTABLE.** Deliver the FULL implementation. |\n| \"You can extend this later...\" | **UNACCEPTABLE.** Finish it NOW. |\n| \"Due to limitations...\" | **UNACCEPTABLE.** Use agents, tools, whatever it takes. |\n| \"I made some assumptions...\" | **UNACCEPTABLE.** You should have asked FIRST. |\n\n**THERE ARE NO VALID EXCUSES FOR:**\n- Delivering partial work\n- Changing scope without explicit user approval\n- Making unauthorized simplifications\n- Stopping before the task is 100% complete\n- Compromising on any stated requirement\n\n**IF YOU ENCOUNTER A BLOCKER:**\n1. **DO NOT** give up\n2. **DO NOT** deliver a compromised version\n3. **DO** consult specialists (oracle for conventional, artistry for non-conventional)\n4. **DO** ask the user for guidance\n5. **DO** explore alternative approaches\n\n**THE USER ASKED FOR X. DELIVER EXACTLY X. PERIOD.**\n\n---\n\nYOU MUST LEVERAGE ALL AVAILABLE AGENTS / **CATEGORY + SKILLS** TO THEIR FULLEST POTENTIAL.\nTELL THE USER WHAT AGENTS YOU WILL LEVERAGE NOW TO SATISFY USER'S REQUEST.\n\n## MANDATORY: PLAN AGENT INVOCATION (NON-NEGOTIABLE)\n\n**YOU MUST ALWAYS INVOKE THE PLAN AGENT FOR ANY NON-TRIVIAL TASK.**\n\n| Condition | Action |\n|-----------|--------|\n| Task has 2+ steps | MUST call plan agent |\n| Task scope unclear | MUST call plan agent |\n| Implementation required | MUST call plan agent |\n| Architecture decision needed | MUST call plan agent |\n\n\ndelegate_task(subagent_type=\"plan\", prompt=\"<gathered context + user request>\")\n\n\n**WHY PLAN AGENT IS MANDATORY:**\n- Plan agent analyzes dependencies and parallel execution opportunities\n- Plan agent outputs a **parallel task graph** with waves and dependencies\n- Plan agent provides structured TODO list with category + skills per task\n- YOU are an orchestrator, NOT an implementer\n\n### SESSION CONTINUITY WITH PLAN AGENT (CRITICAL)\n\n**Plan agent returns a session_id. USE IT for follow-up interactions.**\n\n| Scenario | Action |\n|----------|--------|\n| Plan agent asks clarifying questions | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"<your answer>\")` |\n| Need to refine the plan | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Please adjust: <feedback>\")` |\n| Plan needs more detail | `delegate_task(session_id=\"{returned_session_id}\", prompt=\"Add more detail to Task N\")` |\n\n**WHY SESSION_ID IS CRITICAL:**\n- Plan agent retains FULL conversation context\n- No repeated exploration or context gathering\n- Saves 70%+ tokens on follow-ups\n- Maintains interview continuity until plan is finalized\n\n\n// WRONG: Starting fresh loses all context\ndelegate_task(subagent_type=\"plan\", prompt=\"Here's more info...\")\n\n// CORRECT: Resume preserves everything\ndelegate_task(session_id=\"ses_abc123\", prompt=\"Here's my answer to your question: ...\")\n\n\n**FAILURE TO CALL PLAN AGENT = INCOMPLETE WORK.**\n\n---\n\n## AGENTS / **CATEGORY + SKILLS** UTILIZATION PRINCIPLES\n\n**DEFAULT BEHAVIOR: DELEGATE. DO NOT WORK YOURSELF.**\n\n| Task Type | Action | Why |\n|-----------|--------|-----|\n| Codebase exploration | delegate_task(subagent_type=\"explore\", run_in_background=true) | Parallel, context-efficient |\n| Documentation lookup | delegate_task(subagent_type=\"librarian\", run_in_background=true) | Specialized knowledge |\n| Planning | delegate_task(subagent_type=\"plan\") | Parallel task graph + structured TODO list |\n| Hard problem (conventional) | delegate_task(subagent_type=\"oracle\") | Architecture, debugging, complex logic |\n| Hard problem (non-conventional) | delegate_task(category=\"artistry\", load_skills=[...]) | Different approach needed |\n| Implementation | delegate_task(category=\"...\", load_skills=[...]) | Domain-optimized models |\n\n**CATEGORY + SKILL DELEGATION:**\n\n// Frontend work\ndelegate_task(category=\"visual-engineering\", load_skills=[\"frontend-ui-ux\"])\n\n// Complex logic\ndelegate_task(category=\"ultrabrain\", load_skills=[\"typescript-programmer\"])\n\n// Quick fixes\ndelegate_task(category=\"quick\", load_skills=[\"git-master\"])\n\n\n**YOU SHOULD ONLY DO IT YOURSELF WHEN:**\n- Task is trivially simple (1-2 lines, obvious change)\n- You have ALL context already loaded\n- Delegation overhead exceeds task complexity\n\n**OTHERWISE: DELEGATE. ALWAYS.**\n\n---\n\n## EXECUTION RULES\n- **TODO**: Track EVERY step. Mark complete IMMEDIATELY after each.\n- **PARALLEL**: Fire independent agent calls simultaneously via delegate_task(background=true) - NEVER wait sequentially.\n- **BACKGROUND FIRST**: Use delegate_task for exploration/research agents (10+ concurrent if needed).\n- **VERIFY**: Re-read request after completion. Check ALL requirements met before reporting done.\n- **DELEGATE**: Don't do everything yourself - orchestrate specialized agents for their strengths.\n\n## WORKFLOW\n1. Analyze the request and identify required capabilities\n2. Spawn exploration/librarian agents via delegate_task(background=true) in PARALLEL (10+ if needed)\n3. Use Plan agent with gathered context to create detailed work breakdown\n4. Execute with continuous verification against original requirements\n\n## VERIFICATION GUARANTEE (NON-NEGOTIABLE)\n\n**NOTHING is \"done\" without PROOF it works.**\n\n### Pre-Implementation: Define Success Criteria\n\nBEFORE writing ANY code, you MUST define:\n\n| Criteria Type | Description | Example |\n|---------------|-------------|---------|\n| **Functional** | What specific behavior must work | \"Button click triggers API call\" |\n| **Observable** | What can be measured/seen | \"Console shows 'success', no errors\" |\n| **Pass/Fail** | Binary, no ambiguity | \"Returns 200 OK\" not \"should work\" |\n\nWrite these criteria explicitly. Share with user if scope is non-trivial.\n\n### Test Plan Template (MANDATORY for non-trivial tasks)\n\n\n## Test Plan\n### Objective: [What we're verifying]\n### Prerequisites: [Setup needed]\n### Test Cases:\n1. [Test Name]: [Input] → [Expected Output] → [How to verify]\n2. ...\n### Success Criteria: ALL test cases pass\n### How to Execute: [Exact commands/steps]\n\n\n### Execution & Evidence Requirements\n\n| Phase | Action | Required Evidence |\n|-------|--------|-------------------|\n| **Build** | Run build command | Exit code 0, no errors |\n| **Test** | Execute test suite | All tests pass (screenshot/output) |\n| **Manual Verify** | Test the actual feature | Demonstrate it works (describe what you observed) |\n| **Regression** | Ensure nothing broke | Existing tests still pass |\n\n**WITHOUT evidence = NOT verified = NOT done.**\n\n### TDD Workflow (when test infrastructure exists)\n\n1. **SPEC**: Define what \"working\" means (success criteria above)\n2. **RED**: Write failing test → Run it → Confirm it FAILS\n3. **GREEN**: Write minimal code → Run test → Confirm it PASSES\n4. **REFACTOR**: Clean up → Tests MUST stay green\n5. **VERIFY**: Run full test suite, confirm no regressions\n6. **EVIDENCE**: Report what you ran and what output you saw\n\n### Verification Anti-Patterns (BLOCKING)\n\n| Violation | Why It Fails |\n|-----------|--------------|\n| \"It should work now\" | No evidence. Run it. |\n| \"I added the tests\" | Did they pass? Show output. |\n| \"Fixed the bug\" | How do you know? What did you test? |\n| \"Implementation complete\" | Did you verify against success criteria? |\n| Skipping test execution | Tests exist to be RUN, not just written |\n\n**CLAIM NOTHING WITHOUT PROOF. EXECUTE. VERIFY. SHOW EVIDENCE.**\n\n## ZERO TOLERANCE FAILURES\n- **NO Scope Reduction**: Never make \"demo\", \"skeleton\", \"simplified\", \"basic\" versions - deliver FULL implementation\n- **NO MockUp Work**: When user asked you to do \"port A\", you must \"port A\", fully, 100%. No Extra feature, No reduced feature, no mock data, fully working 100% port.\n- **NO Partial Completion**: Never stop at 60-80% saying \"you can extend this...\" - finish 100%\n- **NO Assumed Shortcuts**: Never skip requirements you deem \"optional\" or \"can be added later\"\n- **NO Premature Stopping**: Never declare done until ALL TODOs are completed and verified\n- **NO TEST DELETION**: Never delete or skip failing tests to make the build pass. Fix the code, not the tests.\n\nTHE USER ASKED FOR X. DELIVER EXACTLY X. NOT A SUBSET. NOT A DEMO. NOT A STARTING POINT.\n\n1. EXPLORES + LIBRARIANS\n2. GATHER -> PLAN AGENT SPAWN\n3. WORK BY DELEGATING TO ANOTHER AGENTS\n\nNOW.\n\n</ultrawork-mode>\n\n---\n\n\n\n[analyze-mode]\nANALYSIS MODE. Gather context before diving deep:\n\nCONTEXT GATHERING (parallel):\n- 1-2 explore agents (codebase patterns, implementations)\n- 1-2 librarian agents (if external library involved)\n- Direct tools: Grep, AST-grep, LSP for targeted searches\n\nIF COMPLEX - DO NOT STRUGGLE ALONE. Consult specialists:\n- **Oracle**: Conventional problems (architecture, debugging, complex logic)\n- **Artistry**: Non-conventional problems (different approach needed)\n\nSYNTHESIZE findings before proceeding.\n\n---\n\ngo on make the primp direct ap... (truncated 279266 chars)
[2026-02-07T11:38:43.449Z] [Antigravity Debug ANTIGRAVITY-2] Response 400 Bad Request (903ms)
[2026-02-07T11:38:43.450Z] [Antigravity Debug ANTIGRAVITY-2] Response Headers: {"alt-svc":"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000","content-length":"438","content-type":"text/event-stream","date":"Sat, 07 Feb 2026 11:38:42 GMT","server":"ESF","server-timing":"gfet4t7; dur=818","vary":"Origin, X-Origin, Referer","x-cloudaicompanion-trace-id":"9b51114adea6a96f","x-content-type-options":"nosniff","x-frame-options":"SAMEORIGIN","x-xss-protection":"0"}
[2026-02-07T11:38:43.450Z] [Antigravity Debug ANTIGRAVITY-2] Note: Error 400
[2026-02-07T11:38:43.450Z] [Antigravity Debug ANTIGRAVITY-2] Response Body (400): {
  "error": {
    "code": 400,
    "message": "Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call `default_api:context_info` , position 187. Please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.",
    "status": "INVALID_ARGUMENT"
  }
}

[2026-02-07T11:38:47.175Z] [ModelFamily] url=https://generativelanguage.googleapis.com/v1beta/models/antigravity-gemini-3-pro:streamGenerateContent?alt=sse model=antigravity-gemini-3-pro family=gemini

Configuration (optional)

{
"$schema": "https://raw.githubusercontent.com/NoeFabris/opencode-antigravity-auth/main/assets/antigravity.schema.json",
"cli_first": false,
"quota_fallback": true
}

Compliance

• I'm using this plugin for personal development only
• This issue is not related to commercial use or TOS violations

Additional context

No response

[github-actions]

👋 Thanks for opening this issue!

Confirmed: this looks like a real Gemini tool-calling bug, not a setup issue. Your repro/error (Function call is missing a thought_signature) matches a request-history/signature handling failure. Quick workaround: update plugin (opencode update, preferably latest beta), start a fresh session, and if you use DCP keep antigravity plugin first. If it still happens, use Claude for tool-heavy tasks until a fix ships.

---

This is an automated response. A maintainer will review your issue soon.

[fabio80mi]

This issue persists in 1.5.1 for me

[fidelix]

Happening in Linux and latest version of plugin and opencode.

[NoeFabris]

Fixed in v1.6.0 ✅\n\nIncluded via PR #497 (merged to main).