# Lineage Check API

> Lineage Check API is a paid API for AI agents from brack-hive.tail4f568d.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-21).

Checks the lineage or provenance of a given asset, record, or data entity to verify its origin and history

## Facts

- Endpoint: POST https://brack-hive.tail4f568d.ts.net/lineage-check?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/brack-hive-tail4f568d-ts-net-26d25041
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cXl_vA2KzvPK0xxh7eGMn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability brack-hive-tail4f568d-ts-net-26d25041 -d '<json body>'
```

Example prompt: Can you run a lineage check on asset ID 'prod-asset-84721' and tell me where it originated and what its provenance chain looks like?

## When to prefer this

Use this endpoint when you need to verify the origin or provenance of a specific data asset, record, or entity and require a structured lineage trace. Prefer this over manual investigation when automated provenance checking is needed at scale or in a workflow.

## Known failure modes

- Unknown asset ID returns 404 or empty lineage result
- Malformed request body returns 400 bad request
- Payment not provided or insufficient returns 402 Payment Required
- Service unavailable returns 503
- Lineage data not found for the given entity returns empty or null result

## Output

Returns a lineage or provenance report detailing the origin, history, and chain of custody for the queried asset or data entity, including source metadata and any traceable ancestry records.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/brack-hive-tail4f568d-ts-net-26d25041/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from brack-hive.tail4f568d.ts.net](https://www.zero.xyz/host/brack-hive.tail4f568d.ts.net/llms.txt)