This is the last post in a series about OpenAPI vendor extensions, and I saved it for the end because it is the one that turns an argument about tidiness into an argument about a bug. Ripio, a Latin American cryptocurrency exchange, uses x-mcp on their operations: x-mcp: enabled: false An object, with a single field, set to false. Ripio is marking this operation as not exposed to agents.
Ripio Wrote enabled false And Tools Will Read It As True
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October 1, 2026
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