openapi: 3.2.0
info:
  title: A2 Biotherapeutics WordPress REST MCP API
  version: wp/v2
  summary: The live WordPress REST API served by the A2 Biotherapeutics corporate website.
  description: 'Derived verbatim from the route-discovery document the A2 Biotherapeutics web server publishes at https://www.a2bio.com/wp-json/ (fetched 2026-08-02, HTTP 200). Every path, method, parameter name, type, default and enum in this document was read from that live response; nothing was invented.


    This is the content-management API of the corporate marketing site, not a therapeutic, clinical or research product API. A2 Biotherapeutics is a clinical-stage cell-therapy company and publishes no developer product API. The surface is included because it is a real, live, self-describing HTTP contract on the provider''s own host, and because the same WordPress install also exposes two Model Context Protocol servers under the `mcp` namespace (see mcp/a2-biotherapeutics-mcp.yml).


    Only the WordPress core namespaces are represented (`wp/v2`, `wp-abilities/v1`, `mcp`, `oembed/1.0`). Third-party plugin namespaces advertised by the same discovery document (yoast/v1, cky/v1, redirection/v1, wordfence/v1, wp-rocket/v1, userway/v1, smart-slider-3/v1, ajaxselect2/v1, duplicate-post/v1, wp-site-health/v1, wp-block-editor/v1) are intentionally excluded as vendor plugin internals.'
  x-derived-from: https://www.a2bio.com/wp-json/
  x-derived-on: '2026-08-02'
  x-apievangelist-method: derived
servers:
- url: https://www.a2bio.com
  description: Production
tags:
- name: mcp
  description: Model Context Protocol servers exposed by the WordPress MCP adapter. Both servers require OAuth 2.1 bearer auth (observed HTTP 401 anonymously).
paths:
  /wp-json/mcp:
    get:
      operationId: getMcp
      summary: GET /mcp
      description: WordPress REST API route `/mcp` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      parameters:
      - name: namespace
        in: query
        schema:
          default: mcp
      - name: context
        in: query
        schema:
          default: view
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
  /wp-json/mcp/mcp-adapter-default-server:
    post:
      operationId: postMcpMcpAdapterDefaultServer
      summary: POST /mcp/mcp-adapter-default-server
      description: WordPress REST API route `/mcp/mcp-adapter-default-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
    get:
      operationId: getMcpMcpAdapterDefaultServer
      summary: GET /mcp/mcp-adapter-default-server
      description: WordPress REST API route `/mcp/mcp-adapter-default-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
    delete:
      operationId: deleteMcpMcpAdapterDefaultServer
      summary: DELETE /mcp/mcp-adapter-default-server
      description: WordPress REST API route `/mcp/mcp-adapter-default-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
  /wp-json/mcp/mcp-oauth-server:
    post:
      operationId: postMcpMcpOauthServer
      summary: POST /mcp/mcp-oauth-server
      description: WordPress REST API route `/mcp/mcp-oauth-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
    get:
      operationId: getMcpMcpOauthServer
      summary: GET /mcp/mcp-oauth-server
      description: WordPress REST API route `/mcp/mcp-oauth-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
    delete:
      operationId: deleteMcpMcpOauthServer
      summary: DELETE /mcp/mcp-oauth-server
      description: WordPress REST API route `/mcp/mcp-oauth-server` in namespace `mcp`, as advertised by the live route-discovery document at https://www.a2bio.com/wp-json/.
      tags:
      - mcp
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema: {}
        '401':
          description: Authentication required or capability missing
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
        '404':
          description: No route or resource found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WPError'
components:
  schemas:
    WPError:
      type: object
      description: The WordPress REST API error envelope, observed verbatim on live 401 responses from this host. Not RFC 9457 problem+json.
      properties:
        code:
          type: string
          examples:
          - rest_forbidden
          - mcp_unauthorized
        message:
          type: string
          examples:
          - Sorry, you are not allowed to do that.
        data:
          type: object
          properties:
            status:
              type: integer
              examples:
              - 401
  securitySchemes:
    mcpOAuth2:
      type: oauth2
      description: OAuth 2.1 authorization-code + PKCE, as advertised by the provider's RFC 8414 metadata at https://www.a2bio.com/.well-known/oauth-authorization-server (fetched 2026-08-02, HTTP 200). Guards the `mcp` namespace; the protected-resource metadata (RFC 9728) names https://www.a2bio.com/wp-json/mcp/mcp-oauth-server.
      flows:
        authorizationCode:
          authorizationUrl: https://www.a2bio.com/oauth/authorize
          tokenUrl: https://www.a2bio.com/oauth/token
          refreshUrl: https://www.a2bio.com/oauth/token
          scopes:
            mcp: Access the site's Model Context Protocol server.
    wpNonce:
      type: apiKey
      in: header
      name: X-WP-Nonce
      description: WordPress cookie-authentication nonce. Advertised by the live server in its Access-Control-Allow-Headers response header (Authorization, X-WP-Nonce, Content-Disposition, Content-MD5, Content-Type).