A Claude Code run pins an MCP capability manifest and stops when the live server schema, implementation, target scope, or side effects differ

Pin the MCP tool contract before Claude Code uses it

An MCP method can keep the same name while its schema, target scope, or side effects change. Pin a capability manifest so Claude Code cannot inherit a different tool after approval.

August 12, 2026 · 6 min · 1090 words · Thomas De Vos
Read Pin the MCP tool contract before Claude Code uses it