Add Bob's Brain as production-grade reference implementation

[jeremylongshore]

Overview

Adding Bob's Brain as a comprehensive reference implementation for the AI Card standard. This is a production-grade multi-agent system that demonstrates real-world AI Card adoption with complete examples and migration guidance.

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🏆 Google Recognition

Bob's Brain is now in Google's official Agent Starter Pack community showcase (PR #580 merged):

• ✅ First external contributor to agent-starter-pack repository
• ✅ 1 of only 4 projects in the community showcase (alongside Sherlock, Smart Learning Platform, Production Monitoring Assistant)
• ✅ Merged by Google maintainer (eliasecchig): "thanks for this, approved and merged!"

This validates Bob's Brain as a production-grade ADK reference implementation trusted by Google's own team.

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What's Included

This PR adds the examples/bobs-brain/ directory with 4 key files:

1. ai-card.json - Universal AI Card v1.0

Complete implementation showing:

• SPIFFE identity (spiffe://intent.solutions/agent/bobs-brain/prod/us-central1/0.13.0)
• Trust attestations (Hard Mode compliance, CI/CD gates, inline deployment)
• A2A protocol service configuration with 3 production skills
• Publisher information and organizational identity
• Rich metadata (version, region, environment, metrics)

2. agent-card-a2a.json - Original A2A AgentCard v0.3.0

For comparison and backward compatibility:

• Current A2A protocol format
• Shows the migration path from A2A to AI Card
• Maintains existing A2A functionality

3. conversion-guide.md - Migration Guide

Step-by-step guide for converting A2A AgentCards to AI Card format:

• Complete field mapping reference
• SPIFFE identity migration patterns
• Multi-protocol support examples
• Validation checklist
• Common pitfalls and best practices

4. README.md - Reference Implementation Overview

Comprehensive documentation covering:

• Multi-agent architecture (1 orchestrator, 1 foreman, 8 specialists)
• Production patterns (Hard Mode rules, Inline Deployment, Dual Memory)
• Key implementation details
• SPIFFE identity pattern explanation
• Production metrics and standards

Why Bob's Brain?

Bob's Brain represents a Google-recognized production-grade implementation with:

• ✅ Google Community Showcase - 1 of 4 projects in agent-starter-pack
• ✅ First external contributor to Google's agent-starter-pack repo
• ✅ Live in production on Vertex AI Agent Engine
• ✅ 95/100 quality score with comprehensive testing (65%+ coverage)
• ✅ 145 documentation files including 28 canonical standards
• ✅ Hard Mode compliance - R1-R8 architectural rules enforced via CI
• ✅ SPIFFE identity framework for immutable identity
• ✅ A2A Protocol 0.3.0 fully implemented with AgentCard
• ✅ Comprehensive CI/CD - 8 GitHub Actions workflows with drift detection
• ✅ OSS standards - CONTRIBUTING, CODE_OF_CONDUCT, SECURITY files

Key Patterns Demonstrated

Trust Attestations

"trust": {
  "attestations": [
    {
      "type": "HardModeCompliance",
      "description": "R1-R8 architectural rules enforced via CI drift detection"
    },
    {
      "type": "CI-CD-Gates",
      "description": "Comprehensive deployment pipeline with ARV validation"
    }
  ]
}

SPIFFE Identity

spiffe://intent.solutions/agent/bobs-brain/prod/us-central1/0.13.0
         └─ trust domain ─┘ └─ workload path (agent/name/env/region/version) ─┘

A2A Protocol Service

"services": {
  "a2a": {
    "type": "a2a",
    "protocolSpecific": {
      "protocolVersion": "0.3.0",
      "skills": [...]
    }
  }
}

Repository Information

Metric	Value
Repository	https://github.com/jeremylongshore/bobs-brain
Release	v0.13.0
License	Apache 2.0
Documentation	145 files, 28 canonical standards
Test Coverage	65%+
Quality Score	95/100
Google Recognition	Agent Starter Pack Showcase

Use Cases

This reference implementation helps developers:

1. Migrate from A2A to AI Card - Complete field mapping and examples
2. Understand SPIFFE identity - Production patterns and best practices
3. Implement trust attestations - Real-world compliance examples
4. Support multi-protocol - A2A alongside AI Card in one system
5. Deploy to production - Proven patterns on Vertex AI Agent Engine

Checklist

• All files follow AI Card v1.0 specification
• Examples are production-tested (v0.13.0 release)
• Comprehensive documentation included
• Migration guide for A2A users
• SPIFFE identity patterns demonstrated
• Trust attestations with real compliance data
• Repository is OSS-ready (CONTRIBUTING, COC, SECURITY)
• Google-recognized (Agent Starter Pack community showcase)

Additional Context

Bob's Brain has been built over multiple phases following strict architectural standards (Hard Mode rules R1-R8) and is actively deployed in production. This makes it an ideal reference for teams looking to adopt the AI Card standard in real-world scenarios.

The conversion guide specifically addresses the most common questions developers have when migrating from A2A AgentCards to the universal AI Card format.

Related PRs

• Google Agent Starter Pack: PR #580 (merged)
• A2A Samples: PR #419