Initiate an ELP assessment call
Place an outbound call to a driver and run the FMCSA-aligned English Language Proficiency assessment. Creates an ELP test record in REQUESTED state, places the call, and links the two. Poll GET /v1/elp/tests/{test_id} to follow the test through to scoring.
Authentication: Supports API key and bearer token authentication.
Authentication
Bearer authentication of the form Bearer <token>, where token is your auth token.
Headers
A unique key (up to 255 printable ASCII characters, e.g. a UUID) that makes a retry of this request safe. Envoy stores the response for 24 hours; a retry with the same key and the same request returns it again with Idempotent-Replayed: true instead of running twice. The same key with a different request returns 422 idempotency_key_reused; while the first request is still running, 409 idempotency_key_in_progress. 5xx and 429 responses are not stored.
Request
Driver phone number to call (E.164 format)
Response
Lifecycle state of an ELP test.
Tracks whether the test ran, not its outcome quality. Outcome quality lives in the per-competency scores and the question counters (questions_answered, valid_answers). The system never renders a pass/fail verdict.
Status of the post-call scoring pipeline.