openapi: 3.2.0
info:
  title: TESSA Agent Directory Extensions API
  version: 0.1.0
  description: 'TESSA Marketing & Technology''s FastAPI service behind aiagent.tessa.tech: the A2A agent card and JSON-RPC endpoint, per-service and per-tenant agent cards, the professional-services directory (firm cards, profiles, introduction requests, claim/verify/removal/takedown flows), the TESSA Professional Services A2A extension, service-type taxonomies, an admin/vector surface, and the mount point of the MCP server (/mcp, Streamable HTTP).'
  contact:
    name: TESSA Marketing & Technology
    url: https://tessa.tech
    email: sales@tessa.tech
  x-apievangelist-provenance:
    harvested: '2026-09-19'
    method: searched
    source: https://aiagent.tessa.tech/openapi.json
    original: openapi/_original/tessa-tech-openapi.json
    original_sha256: 3349c7e2613aca4fb5736b570f082a2d509e1147b8a82183b71dafff0722f6da
    changes:
    - servers[] added (the harvested spec declares none); hosts taken from the provider's own root document at https://aiagent.tessa.tech/ and verified by an identical-byte spec at complianceregistry.net/openapi.json and marketingregistry.org/openapi.json
    - info.description and info.contact added; contact values from the agent card (_meta.tessa.contact) and server.json (support_email)
    ownership: Served on tessa.tech's own subdomain; info.title names TESSA; the agent card at the same host names TESSA Marketing & Technology as provider with url https://tessa.tech; the root document names the app 'TESSA MCP Server + Agent Directory'.
servers:
- url: https://aiagent.tessa.tech
  description: TESSA's own agent host — agent card, A2A JSON-RPC, MCP (/mcp/), service cards (/s), OpenAPI. Registry-scoped routes return 421 here.
- url: https://complianceregistry.net
  description: TESSA-operated Compliance Registry (same application, same spec bytes). Registry routes (/registry.json, /taxonomy, /extensions, /{slug}) resolve here.
- url: https://marketingregistry.org
  description: TESSA-operated Local Business / Marketing Registry (same application, same spec bytes).
tags:
- name: Extensions
paths:
  /extensions/:
    get:
      summary: Extensions Index
      operationId: extensions_index_extensions__get
      responses:
        '200':
          description: Successful Response
          content:
            text/html:
              schema:
                type: string
      tags:
      - Extensions
  /extensions/tessa-professional-services/v1/:
    get:
      summary: Extension Spec Page
      operationId: extension_spec_page_extensions_tessa_professional_services_v1__get
      responses:
        '200':
          description: Successful Response
          content:
            text/html:
              schema:
                type: string
      tags:
      - Extensions
  /extensions/tessa-professional-services/v1:
    get:
      summary: Extension Spec Page
      operationId: extension_spec_page_extensions_tessa_professional_services_v1_get
      responses:
        '200':
          description: Successful Response
          content:
            text/html:
              schema:
                type: string
      tags:
      - Extensions
  /extensions/tessa-professional-services/v1/schema.json:
    get:
      summary: Extension Schema
      operationId: extension_schema_extensions_tessa_professional_services_v1_schema_json_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
      tags:
      - Extensions
  /extensions/tessa-professional-services/v1/example.json:
    get:
      summary: Extension Example
      operationId: extension_example_extensions_tessa_professional_services_v1_example_json_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
      tags:
      - Extensions
  /extensions/tessa-professional-services/v1/changelog:
    get:
      summary: Extension Changelog
      operationId: extension_changelog_extensions_tessa_professional_services_v1_changelog_get
      responses:
        '200':
          description: Successful Response
          content:
            text/html:
              schema:
                type: string
      tags:
      - Extensions