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MCP API

The normative MCP response and semantics contract is the repository-root file:

MCP_API_SPEC.md

Use it for:

  • Response shapes and cross-tool semantics
  • Limits and transport contract
  • Failure and receipt semantics at the protocol level

How it relates to other docs

Source Authority
Runtime tools/list Tool availability and input JSON Schema
MCP_API_SPEC.md Response / semantic contract
Per-tool pages Usage, recovery, examples
Tools reference Compact human reference

If pages disagree, prefer the higher row and report documentation drift.