DOCS
COSMOS developer docs
Connect any MCP client to https://cosmic-mcp.app/mcp, sign in with Reach, and call tools under the gateway's checks.
Quick start
Claude, ChatGPT, Claude Code, Cursor and VS Code in one page, plus local bridge downloads.
Authentication
OAuth 2.1, PKCE, registration, metadata, scopes and lifetimes.
Tool catalog
Live tools by leg, with input schemas.
API reference
OpenAPI and AsyncAPI, rendered and raw.
Error codes
Every code, its HTTP status and whether to retry.
Changelog
Newest first.