Add agent and services architecture plan with dynamic tools registry

[Copilot]

Problem

Outline a feasible architecture for agents that work across go-micro services, with service discovery, standardized protocols, and a monetization model.

Design

Two-Component Architecture

Agent Layer: Claude-based agent with dynamically generated tools registry. Tools are automatically built from service metadata rather than hardcoded—when a new service registers, it becomes immediately available as an agent capability.

Service Marketplace: Registry where developers publish go-micro services. Each service declares methods, schemas, and pricing. 70% revenue to developer, 30% to platform.

Protocol

• Primary: gRPC for production (typed, efficient)
• Fallback: HTTP JSON-RPC for easier onboarding
• Discovery: Hybrid pull/push—initial poll, then subscribe to registry changes
• Health: Periodic checks with circuit breakers for failing services

Example Flow

User: "What's the weather in London?"
  ↓
Agent queries tools registry → finds weather.GetForecast
  ↓
Calls service via gRPC → deducts 2 credits
  ↓
Returns formatted response → credits author 1.4p, platform 0.6p

Deliverables

Three planning documents under docs/:

• AGENT_SERVICES_ARCHITECTURE.md (929 lines): Full technical spec with service registry schema, tools conversion logic, marketplace model, security considerations, 5-phase roadmap
• AGENT_SERVICES_QUICKSTART.md (175 lines): Executive summary with example use cases
• AGENT_SERVICES_CHECKLIST.md (434 lines): Phase-by-phase implementation tasks with 8-11 week timeline to MVP

Integrated into docs navigation under "Planning" category.

Open Questions

• Service versioning strategy for breaking changes
• Tool selection heuristics when multiple services offer similar capabilities
• Service dependency chains and nested revenue splits
• Approval flow (automatic vs manual review)

No implementation—pure design specification ready for stakeholder review.

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