webmcp

Ruby/Rails toolkit for WebMCP — the W3C proposal that lets web pages declare structured tools for AI agents (document.modelContext).

Status: early development. The WebMCP spec is in Chrome origin trial (Chrome 149–156) and its API surface has already changed twice. This gem is being extracted from a production integration and will ship its first usable release once the spec surface stabilizes.

Planned:

• Define tools once in Ruby; emit both server-side MCP schemas and WebMCP registration payloads
• Declarative helpers: form_with ..., webmcp: → toolname / tooldescription / toolparamdescription attributes
• Rack middleware for the Origin-Trial token header

License

MIT