GET

Evidence streams

List sources

/api/v2/evidence-sources

AUTHENTICATIONBearer token · evidence:readService ownerevidence-stream-serviceContract sourceOpenAPISTATUSProduction listed

Purpose and usage

What this endpoint does

List owner-scoped evidence sources and their liveness and acceptance posture without key material or precise location.

When to use it

Inventory the authenticated workspace's enrolled evidence sources and reconcile liveness, acceptance, and rejection posture before trusting stream freshness.

OUTCOME · Discover

What changes

Read-only projection; it grants no mutation, settlement, traffic, or authority change.

WHY IT MATTERS

Gives people and agents a contract-backed way to discover sources.
Lets integrations follow evidence from schema and source enrollment through ordered commitments, validation posture, operational alerts, and exception review.

ISOLATION + AUTHORITY

Schema, source, signer, stream, event, payload, sequence, validation, quarantine, alert, acknowledgement, retention, and business-outcome authorities remain distinct. Evidence visibility or cryptographic validity does not by itself prove semantic truth, regulatory acceptance, settlement, or authorization for an external action.

BEFORE YOU CALL

Authenticate at the documented boundary: bearer+scope.
Use the live OpenAPI schema as the authority for the exact request shape and response model.
Resolve the owner scope, schema, source, stream, sequence or time window, validation posture, and minimum payload disclosure required by the decision.

WHAT TO DO NEXT

Correlate the schema, source, stream, sequence, commitment, validation, quarantine, and alert state for the selected evidence lineage.
Escalate or acknowledge exceptions through their separately authorized workflow; do not equate cryptographic validity with semantic or regulatory acceptance.

AGENT GUIDANCE

Use sources only for the purpose and lifecycle stage described by this operation; do not treat it as authority for an adjacent action.
Use the live OpenAPI schema as the authority for the exact request shape and response model.
Distinguish schema validity, source authenticity, signature validity, sequence continuity, payload availability, quarantine status, alert acknowledgement, operational health, and business acceptance.
Use response links and canonical identifiers instead of constructing internal service URLs or scraping the website.

Contract reference

Use the deployed OpenAPI for exact parameters, schemas and security requirements. The tables below provide integration guidance.

Open this operation in OpenAPI

Request and response

Make the request

Examples illustrate integration intent; the referenced OpenAPI operation and component schemas define the executable shape.

PARAMETERS

Headers, path, query, and body

NAMELOCATIONPRESENCETYPE / RULES / PURPOSE

AuthorizationheaderRequired

Bearer tokenCredential containing the evidence:read scope.EXAMPLEBearer hc_live_…

RESPONSES

Status and payload examples

200Owner-scoped evidence sources with stream binding, lifecycle, liveness, and accepted/rejected event posture.Read completed · JSON RESPONSE+

{
  "items": [
    {
      "source_id": "038ee1b3c92445bab120a611598c677d",
      "stream_id": "6ecf43f09da445c7aa534b51b2cf05cb",
      "external_reference": "cold-room-sensor-7",
      "name": "Cold room sensor 7",
      "source_type": "THERMAL",
      "status": "ACTIVE",
      "last_seen_at": "2026-09-01T20:16:01Z",
      "last_observation_at": "2026-09-01T20:16:00Z",
      "accepted_event_count": 18421,
      "rejected_event_count": 3,
      "created_at": "2026-08-14T11:00:00Z"
    }
  ],
  "total": 1
}

INTEGRATION DECISION

CALLER ACTION: Accept the returned representation or receipt, then correlate the schema, source, stream, sequence, commitment, validation, quarantine, and alert state for the selected evidence lineage.
RETRY SAFETY: Repeat only when the integration needs a fresher authoritative projection.
STATE RECONCILIATION: Use returned identifiers and versions as the comparison point for later reads. Refresh the stream and checkpoint, compare event commitment, sequence, retention boundary, consumer position, and latest accepted receipt.

401The bearer credential is missing, expired, or invalid.Authentication required · JSON RESPONSE+

{
  "code": "invalid_credentials",
  "message": "The bearer credential is missing, expired, or invalid."
}

INTEGRATION DECISIONinvalid_credentials

CALLER ACTION: Discard the rejected credential, complete the documented authentication or reassertion flow, and rebuild any request signature with fresh timestamps and nonces.
RETRY SAFETY: Retry only with a newly valid credential and fresh replay-protection values. Do not replay an expired signature.
STATE RECONCILIATION: Authentication failed before an authoritative read was returned for owner-scoped stream metadata, events, checkpoints, commitments, retention windows, and consumer positions.
ESCALATE WHEN: Escalate when sequence continuity, checkpoint commitment, retention, ownership, or consumer position cannot be proven.

403The credential lacks explicitly provisioned evidence:read authority.Authority or policy denied · JSON RESPONSE+

{
  "code": "insufficient_scope",
  "message": "The credential lacks explicitly provisioned evidence:read authority."
}

INTEGRATION DECISIONinsufficient_scope

CALLER ACTION: Verify the exact scope, tenant or workspace membership, owner boundary, step-up purpose, feature policy, and resource eligibility. Never broaden authority automatically.
RETRY SAFETY: Do not retry until the missing authority or policy condition has been deliberately resolved with least privilege.
STATE RECONCILIATION: Confirm the caller and resource resolve to the same authority boundary for owner-scoped stream metadata, events, checkpoints, commitments, retention windows, and consumer positions.
ESCALATE WHEN: Escalate when sequence continuity, checkpoint commitment, retention, ownership, or consumer position cannot be proven.

503The authoritative Core Evidence Streams projection is unavailable.Dependency unavailable or outcome uncertain · JSON RESPONSE+

{
  "code": "evidence_streams_unavailable",
  "message": "The authoritative Core Evidence Streams projection is unavailable."
}

INTEGRATION DECISIONevidence_streams_unavailable

CALLER ACTION: Treat the failure as transient and preserve the last known good representation without presenting it as fresh.
RETRY SAFETY: Retry with bounded exponential backoff and jitter; stop after the integration's failure budget is exhausted.
STATE RECONCILIATION: Refresh the stream and checkpoint, compare event commitment, sequence, retention boundary, consumer position, and latest accepted receipt.
ESCALATE WHEN: Escalate when sequence continuity, checkpoint commitment, retention, ownership, or consumer position cannot be proven.

OPERATIONAL NOTES

Security and lifecycle guarantees

Use this collection after stream discovery to map stable source_id values to streams and determine whether a source is active, recently seen, and producing accepted observations.
last_seen_at and last_observation_at are nullable RFC 3339 timestamps. Null means the source has no retained activity time; it is not equivalent to an online or offline determination.
ACTIVE, a recent timestamp, and a high accepted count do not attest calibration, factual accuracy, completeness, or authorization for a downstream business action.
The response excludes precise location, public keys and fingerprints, credentials, enrollment evidence, owner identifiers, and raw observations. No query parameters or request body are accepted; responses are no-store.

Reference version and availability details

This route is implemented in canonical gateway source and appears in the production OpenAPI snapshot observed 2026-10-02T23:27:55.510Z. Authentication, tenant, feature, venue, and market policy still apply.

Verify the exact production OpenAPI operation Return to the V2 directory