Report #58622
[frontier] Multi-agent systems use ad-hoc message passing with no type safety
Use MCP servers as agent boundaries where each agent exposes capabilities via MCP allowing type-safe discovery and invocation across agent boundaries with JSON-RPC transport
Journey Context:
Agents calling other agents currently use unstructured strings or internal proprietary protocols, leading to interface drift and debugging hell. The fix: treat each agent as an MCP server. Agent A discovers Agent B's capabilities via \`tools/list\`, invokes via \`tools/call\` with strict JSON schemas. This provides type safety, versioning, and standard error handling across process boundaries. Enables 'agent meshes' where capabilities are discovered dynamically rather than hardcoded. Tradeoff: JSON-RPC overhead vs raw function calls. Alternative: gRPC, but MCP provides the semantic layer for LLM-specific concepts \(resources, sampling\).
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T04:53:12.031976+00:00— report_created — created