generated: '2026-09-19'
method: searched
source: >-
  https://aiagent.tessa.tech/openapi.json (info.version), the agent card, server.json and the MCP initialize response
  on aiagent.tessa.tech, https://complianceregistry.net/extensions/tessa-professional-services/v1/changelog, and a
  search of tessa.tech for status, SLA, versioning and deprecation pages (2026-09-19).
versioning:
  scheme: unversioned-path
  current:
    openapi_info_version: 0.1.0
    agent_card_version: 1.1.0
    mcp_server_info_version: 1.30.0
    mcp_server_json_version: 1.0.1
    mcp_protocol_version: '2025-06-18'
    a2a_protocol_version: '0.3.0'
    extension_version: 1.0.0 (TESSA Professional Services, 2026-04-24)
  notes: >-
    No version segment in any REST path on aiagent.tessa.tech; the only versioned surface is the A2A extension
    (/extensions/tessa-professional-services/v1/) and the taxonomy routes (/taxonomy/{name}/v{version}). The four
    version numbers above disagree with each other (spec 0.1.0, card 1.1.0, MCP runtime 1.30.0, MCP manifest 1.0.1),
    so none of them is a reliable release identifier for a consumer; the MCP serverInfo.version is the one that
    changes with the running code.
changelog:
  url: https://complianceregistry.net/extensions/tessa-professional-services/v1/changelog
  artifact: changelog/tessa-tech-changelog.yml
  scope: The A2A extension only. No changelog is published for the REST API, the MCP tool set or the agent card.
deprecation:
  policy_documented: false
  sunset_header: false
  deprecated_operations: []
  notes: >-
    No deprecation or sunset policy located on tessa.tech or aiagent.tessa.tech; no operation in the 51-operation
    spec is marked deprecated. No Deprecation pointer is emitted.
sla:
  url: null
  uptime_target: null
  notes: No SLA published. The pricing page prices services, not API availability.
status_page:
  url: null
  notes: >-
    No status page found (status.tessa.tech not probed as no link to one exists; no Status/uptime link on the site or
    in the agent host's root document). The app exposes GET /healthz ({"status":"ok","db":true,"mcp_mounted":true,
    "sitepilot_mounted":true}) — a liveness probe, not a status page. No StatusPage pointer is emitted.
health_endpoint:
  url: https://aiagent.tessa.tech/healthz
  observed: '{"status":"ok","db":true,"mcp_mounted":true,"sitepilot_mounted":true}'
  operationId: healthz_healthz_get
support_period:
  stated: null
  notes: No support-lifetime statement for the agent surfaces.