API Evangelist enhancements for the Kita AI Underwriter API

overlay: 1.0.0
info:
  title: API Evangelist enhancements for the Kita AI Underwriter API
  version: 1.0.0
extends: openapi/kita-underwriter-openapi.yml
x-generated: '2026-07-19'
x-method: generated
x-source: API Evangelist enrichment pipeline
actions:
- target: $.info
  update:
    x-apievangelist-enriched: '2026-07-19'
    x-apievangelist-provenance: 'Generated from Kita''s published documentation and the
      official API.md in Kita-Technologies/kita-api-examples; Kita publishes no
      machine-readable OpenAPI description.'
    x-apis-json: https://raw.githubusercontent.com/api-evangelist/kita/refs/heads/main/apis.yml
    x-authentication: authentication/kita-authentication.yml
    x-conventions: conventions/kita-conventions.yml
    x-error-catalog: errors/kita-problem-types.yml
    x-data-model: data-model/kita-data-model.yml
    x-lifecycle: lifecycle/kita-lifecycle.yml
- target: $.info
  update:
    x-idempotency:
      supported: true
      mechanism: client-supplied business key
      field: external_ref
      location: request body
      operations: [intakeApplication]
      header: none
      replay_response: 'HTTP 200 with "idempotent": true'
- target: $.info
  update:
    x-async-model:
      pattern: submit-then-poll
      webhooks: false
      document_poll: 'GET /applications/{id}/documents until status leaves awaiting/processing'
      memo_poll: 'GET /applications/{id}/memo/status until synthesis_in_progress is false and
        is_stale is false'
      backoff: start at 2–3 seconds, exponential
- target: $.paths['/intake'].post
  update:
    x-idempotent: true
    x-idempotency-field: external_ref
    x-agentic-consequence: write
    x-partial-failure: 'HTTP 502 means the application was created but document upload failed —
      do not re-run blind; replay with the same external_ref or upload documents separately.'
- target: $.paths['/applications/{id}'].delete
  update:
    x-agentic-consequence: safety-critical
    x-irreversible: true
    x-note: Permanently deletes the application, its documents and storage, and the borrower
      record if orphaned. There is no undo and no test mode.
- target: $.paths['/applications/{id}/documents/{docId}'].delete
  update:
    x-agentic-consequence: write
    x-irreversible: true
    x-side-effect: Recomputes file completeness on the parent application.
- target: $.paths['/applications/{id}/credit'].get
  update:
    x-deterministic: true
    x-note: 'Spread, ratios and the policy decision come from a versioned calculation engine,
      never from an LLM. Every value cites the document line it came from. Layers are null
      until computed — a null layer means not-yet-computed, not zero.'
- target: $.paths['/applications/{id}/memo'].post
  update:
    x-long-running: true
    x-inline-timeout-seconds: 120
    x-note: Redrafting overwrites the prior draft. Sections locked by a loan officer are
      flagged locked_by_lo.
- target: $.paths['/applications/{id}'].patch
  update:
    x-agentic-consequence: write
    x-note: 'Setting status to approved or declined records a lender credit decision. Treat as
      a human-in-the-loop action; Kita''s policy engine defaults routing to human review.'
- target: $.components.securitySchemes.ApiKeyAuth
  update:
    x-key-prefix: kita_uw_
    x-env-var: KITA_UNDERWRITER_API_KEY
    x-key-scopes: [read, write]
    x-shown-once: true
    x-hash-at-rest: SHA-256
    x-server-side-only: true