API Evangelist enhancements for the Nexla GenAI (RAG + MCPaaS) API

overlay: 1.0.0
info:
  title: API Evangelist enhancements for the Nexla GenAI (RAG + MCPaaS) API
  version: 1.0.0
extends: ../openapi/nexla-genai-mcpaas-openapi.json
x-generated: '2026-08-26'
x-method: generated
x-source: >-
  Derived from the harvested spec at https://api-genai.nexla.io/openapi.json plus mcp/nexla-mcp.yml and
  mcp/nexla-tool-crosswalk.yml. The original spec is never mutated.
actions:
- target: $.info
  description: >-
    The harvested spec declares no servers[] block and no securitySchemes, so a generated client has
    neither a host nor an auth model. Record both from the documented deployment.
  update:
    x-api-evangelist-notes:
      base_url: https://api-genai.nexla.io
      mcp_endpoint: https://api-genai.nexla.io/mcp/service_key/{server_key}
      mcp_transport: streamable-http
      auth: 'Authorization: Bearer <NEXLA_SERVICE_KEY>, or OAuth 2.0 for clients that cannot set headers'
      oauth_protected_resource: https://api-genai.nexla.io/.well-known/oauth-protected-resource
      docs: https://docs.nexla.com/dev-guides/mcp-tools
- target: $.servers
  description: Add the production host, which the published document omits entirely.
  update:
  - url: https://api-genai.nexla.io
    description: Nexla GenAI / MCPaaS production host (probed 2026-08-26).
- target: $.components.securitySchemes
  description: >-
    Declare the documented bearer service-key scheme. The published contract has an empty securitySchemes
    map even though every operation requires authentication.
  update:
    NexlaServiceKey:
      type: http
      scheme: bearer
      description: >-
        Permanent Nexla service key presented as `Authorization: Bearer <NEXLA_SERVICE_KEY>`. Documented
        at https://docs.nexla.com/dev-guides/authentication/overview and
        https://docs.nexla.com/dev-guides/mcp-tools/authentication.
- target: $.paths['/v1/toolsets/{tool_set_id}/exports/{export_id}:retire'].post
  description: Flag export retirement as terminal for agent consumers.
  update:
    x-agentic-consequence: destructive
    x-agentic-reversible: false
    x-agentic-note: 'Retiring an export takes an MCP server offline; pause is the reversible alternative.'
- target: $.paths['/v1/tools/{tool_id}:execute'].post
  description: >-
    Mark the tool-execution operation as the consequence boundary — the effect depends entirely on the
    Nexset the tool was minted from, so it cannot be classified statically.
  update:
    x-agentic-consequence: variable
    x-agentic-note: >-
      Consequence is determined by the backing tool definition. Read
      GET /v1/tools/{tool_id}/definition before executing. Every call writes an audit receipt retrievable
      via GET /v1/receipts/{receipt_id}.