[FEATURE]: Subscription-adapter plugin for model-locked harnesses (Claude Code, Cursor, Windsurf)

[lgwacker]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

The problem

altimate-code is excellent when you can run it directly. But a growing number of dbt teams are standardized on subscription harnesses — Claude Code, Cursor, Windsurf — where company policy or cost constraints mean only one LLM is allowed to run.

The users most likely to want altimate-code's SQL intelligence — dbt teams at companies with strict tooling governance — are exactly the ones who can't use it today. This is a real adoption blocker.

The proposal

Ship an official subscription-adapter plugin alongside altimate-code: a thin harness layer that exposes altimate-core's deterministic engine to model-locked environments via the Model Context Protocol (MCP), with the altimate LLM agent never invoked.

Users in those environments would:

• Install the plugin — one npm install, one init command
• Get the same Rust/NAPI engine altimate-code uses: transpile, lint, lineage, PII check, equivalence, schema diff, dbt PR review with a signed verdict, impact analysis, finops, and more
• Get skills and agent personas scaffolded directly into their harness
• Never need an altimate API key or a second model

The altimate-code agent would be explicitly forbidden at the code level, not just undocumented. Users get the deterministic half of altimate-code only.

Prior art — proof of concept

I built a proof-of-concept called opende that implements exactly this. It exists because the gap is real and there was no official path.

What	Detail
Test coverage	228 passing tests (unit + integration against the real engine)
MCP tools	64 tools exposed via opende-mcp
CLI entry point	interactive opende init wizard
Core dependency	@altimateai/altimate-core, currently tracking 0.6.0
Harness support	Claude Code today; adapter-based CLI generator makes Cursor/Windsurf a thin addition
License	MIT, with full attribution to altimate-code and altimate-core in NOTICE

A community fork tracking your core library is a worse outcome for everyone than an official plugin — version drift, inconsistent verdicts, confused users. The goal of this issue is to find a better path.

What I'm asking

I'd like to discuss whether Altimate would be interested in any of these:

1. Adopting this as an official plugin — maintained under the altimate-code org, with opende merged or superseded by an official implementation
2. Co-maintaining it — opende stays independent but is officially acknowledged and linked as the supported path for subscription-locked users
3. Committing to a stable public API surface in altimate-core — so community adapters can track releases without breakage

Happy to share more about the implementation, contribute code directly, or help design the integration. The demand is real — I built this because my own team needed it.

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Reference implementation: https://github.com/lgwacker/opende

[anandgupta42]

Thanks, @lgwacker. We have been actively working on something similar. I will take a look at your code soon as well.

[githnm]

Hi @lgwacker - I’m following up on your request for an official plugin for agentic harnesses.

We've launched our Altimate Code plugin on Anthropic's official plugin marketplace. You can install it with claude plugin install altimate-code@claude-plugins-official or find it in Claude’s official marketplace: https://claude.com/plugins/altimate-code

We’ve also released a plugin for Codex: https://github.com/AltimateAI/altimate-codex-plugin

We’d love to hear your feedback and discuss how we can improve further.