feat: Add MCP tool support to bazaar extension spec#1134
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feat: Add MCP tool support to bazaar extension spec#1134apmcdermott wants to merge 1 commit intomainfrom
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Add documentation for cataloging MCP tools alongside HTTP endpoints. MCP tools use a simpler structure with just tool name and inputSchema, without the method/body/queryParams split needed for HTTP.
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CarsonRoscoe
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Feb 9, 2026
| ## Summary | ||
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| The `bazaar` extension enables **resource discovery and cataloging** for x402-enabled endpoints. Resource servers declare their endpoint specifications (HTTP method, input parameters, and output format) so that facilitators can catalog and index them in a discovery service. | ||
| The `bazaar` extension enables **resource discovery and cataloging** for x402-enabled endpoints and tools. Resource servers declare their endpoint specifications (HTTP method or MCP tool name, input parameters, and output format) so that facilitators can catalog and index them in a discovery service. |
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nit: I'd say and MCP tools, as it's the first line of the summary before MCP has been brought up
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Description
Extends the
bazaarextension specification to support MCP (Model Context Protocol) tools in addition to HTTP endpoints, enabling resource discovery and cataloging for both endpoint types.Changes
input.type: "mcp"as a discriminated union option alongsideinput.type: "http"toolname,description,inputSchema, andexampleargumentstoolandinputSchema)Specification Details
The
info.inputobject now supports a discriminated union:input.type: "http"— HTTP endpoints (GET, HEAD, DELETE, POST, PUT, PATCH)input.type: "mcp"— MCP tools with tool name, input schema, and example argumentsMCP tools use the same discovery pattern as HTTP endpoints, allowing facilitators to catalog and index both endpoint types in a unified discovery service.
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