---
title: "POST /eval-evidence/batches"
method: POST
path: "/eval-evidence/batches"
---

# POST /eval-evidence/batches

`POST /eval-evidence/batches`

## Request

- Base URL: `https://api.caveman.so/api/v1`
- URL: `https://api.caveman.so/api/v1/eval-evidence/batches`
- Auth: one of:
  - OAuth 2
    - Authorization code: `/api/v1/oauth/authorize`
    - Token URL: `/api/v1/oauth/token` scopes: `eval:write`
  - HTTP bearer
  - API key in cookie `cave_access`
  - API key in cookie `__Secure-cave_identity.session_token`

POST /api/v1/eval-evidence/batches on the Caveman Cloud control plane. Requires the eval:write scope. Exposed to autonomous agents as the ingest_evidence action of the caveman_evals_write tool (write access). Author versioned datasets, reusable evaluators and workbenches; create strict suites, ingest evidence, and run baselines. Evidence ingest supports dry_run — always dry-run first. Ask Caveman to draft quality criteria again within the drafting allowance, propose a criterion for a person to turn on, and hold the pull request that adds the Caveman check to CI. Track a criterion on a slice of traces in one step: from an agent it lands proposed, and a person turns it on. Queue units for review and label them (an agent's label is recorded as an agent's, never as human gold), and make a dataset from recorded traffic.

## Request body

- object
  - `dry_run` boolean
  - `items` object[], required
    - `observed_at` string, required
    - `result_at` string, required
    - `trace_id` string
    - `span_id` string
    - `response_id` string
    - `source_system` string, required
    - `source_run_id` string
    - `source_suite_id` string
    - `source_case_id` string
    - `source_result_id` string
    - `ingestion_id` string
    - `evaluator_name` string, required
    - `evaluator_type` string, required
    - `evaluator_version` string, required
    - `evaluator_config_digest` string, required
    - `status` 'processed' | 'skipped' | 'error', required
    - `fault` string
    - `score_label` string
    - `explanation` string
    - `explanation_artifact_ref` string
    - `payload_digest` string
    - `fixture_digest` string
    - `completeness` 'complete' | 'partial' | 'unknown', required
    - `idempotency_key` string, required
    - `passed` boolean, nullable
    - `score` number, nullable
    - `score_min` number, nullable
    - `score_max` number, nullable
  - `project_id` string, uuid, required

## Response `2XX`

Successful response. Exact status depends on synchronous or durable delivery outcome.

## Other responses

- `4XX`: Structured failure. `error.code` is stable; `error.request_id` is echoed in the x-cave-request-id header.
- `5XX`: Structured failure. `error.code` is stable; `error.request_id` is echoed in the x-cave-request-id header.

---

[API](https://skmtc.dev/caveman/apis/caveman-cloud-api.md) - [All operations](https://skmtc.dev/caveman/apis/caveman-cloud-api/llms.txt) - [OpenAPI document](https://skmtc.dev/caveman/apis/caveman-cloud-api/revisions/508312d01cfc?raw)