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FI1: Built-in MCP (Model Context Protocol) tool adapter #17

@frisbeeman

Description

@frisbeeman

Status: Future idea, not scheduled. Lives in the v0.5+ ""maybe"" bucket of the roadmap.

Summary

Wrap MCP (Model Context Protocol) servers as ToolT instances. Lets agents use any MCP-exposed tool without per-server adapter code.

Why this matters

MCP is becoming a dominant standard for exposing tools to LLM agents. Built-in support would make temporal-agent-rs interoperable with the broader MCP ecosystem.

Why not scheduled

May rise into v0.3 or v0.4 depending on community interest. Defer until there's a concrete use case driving the priority.

Open questions

  • Sync vs. streaming MCP transports?
  • Per-MCP-server connection lifecycle (workflow-scoped, worker-scoped)?
  • Authentication patterns?

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    enhancementNew feature or requestfuturev0.5+ future idea, uncommitted

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