generated: '2026-07-20'
method: derived
source: openapi/palmetto-energy-intelligence-openapi.json + docs.palmetto.com
standards:
- id: openapi-3.1
  conforms: true
  evidence: Energy Intelligence API publishes an OpenAPI 3.1.0 document at https://ei.palmetto.com/openapi.json
- id: api-key-auth
  conforms: true
  evidence: Energy Intelligence uses an apiKey security scheme (X-API-Key header)
- id: bearer-token-auth
  conforms: true
  evidence: Energy Platform and Finance APIs issue Bearer tokens from a login endpoint
- id: oauth2
  conforms: false
  evidence: no oauth2 security scheme declared; auth is API key or username/password bearer login
- id: openid-connect
  conforms: false
- id: rfc9457-problem-details
  conforms: false
  evidence: Energy Intelligence 422 errors use application/json (FastAPI HTTPValidationError), not application/problem+json
- id: webhooks
  conforms: true
  evidence: Finance (LightReach) API documents a webhook subscription surface with 30+ event types and signed delivery