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OpenAPI Specification

openapi: 3.2.0
info:
  title: Artifact Share MCP API
  version: 0.1.0
  description: Artifact Share is reached programmatically through its remote MCP endpoint at /mcp (JSON-RPC over Streamable HTTP) and authenticated CLI REST endpoints. An MCP client (Claude, ChatGPT, Cursor) authorizes with OAuth 2.1 and then calls tools to share, update, read, comment on, and organize artifacts. See /capabilities.md for the full tool list and /.well-known/agent.json for discovery.
servers:
- url: https://artifactshare.com
tags:
- name: MCP
paths:
  /mcp:
    post:
      summary: MCP endpoint (JSON-RPC over Streamable HTTP)
      description: Publisher device credentials are limited to their scoped artifact REST endpoints and cannot access MCP. Remote MCP server. Accepts JSON-RPC 2.0 (initialize, tools/list, tools/call) with an OAuth 2.1 bearer token. See /capabilities.md for the full tool list.
      security:
      - oauth2:
        - artifactshare:access
      responses:
        '200':
          description: JSON-RPC response.
        '401':
          description: Missing or invalid bearer token; the WWW-Authenticate header points at the protected-resource metadata.
      tags:
      - MCP
      operationId: postMcp
      x-operation-id-source: derived
components:
  securitySchemes:
    cliBearer:
      type: http
      scheme: bearer
      description: CLI access credential; not an MCP OAuth token.
    browserSession:
      type: apiKey
      in: cookie
      name: better-auth.session_token
      description: Authenticated browser session (secure cookie name may carry the __Secure- prefix).
    oauth2:
      type: oauth2
      description: OAuth 2.1 authorization-code flow with PKCE, served under /api/auth. MCP clients obtain the bearer token for /mcp this way; the same endpoints are advertised at /.well-known/oauth-authorization-server.
      flows:
        authorizationCode:
          authorizationUrl: https://artifactshare.com/api/auth/oauth2/authorize
          tokenUrl: https://artifactshare.com/api/auth/oauth2/token
          scopes:
            openid: Authenticate the user
            profile: Read basic profile (name, locale)
            email: Read the verified email address
            offline_access: Issue a refresh token for offline use
            artifactshare:access: View, share, update, and permanently delete Artifact Share files; manage projects and comments