# Forest Gas Station – Job Changed Watchdog

> Forest Gas Station – Job Changed Watchdog is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Checks whether a specific job posting has been closed or materially changed since a previously recorded hash, returning a lightweight change signal.

## Facts

- Endpoint: POST https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/job/changed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forest-gas-station-job-changed-watchdog-e645d32d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qxhn-zwhLCfZ2XZKn8mIX

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 forest-gas-station-job-changed-watchdog-e645d32d -d '<json body>'
```

Example prompt: Check whether the Greenhouse job at https://boards.greenhouse.io/acme/jobs/12345 with job ID 12345 has changed or been taken down since my last snapshot hash 'abc123def456'.

## When to prefer this

Choose this endpoint when you need a cheap, lightweight signal about whether a specific job posting has changed or closed, without re-fetching and re-parsing the full job description. Ideal for high-volume monitoring pipelines where full scrapes are expensive. Supports Greenhouse, Lever, and Ashby specifically; prefer over generic web-change detectors when working within these ATS ecosystems.

## Known failure modes

- Job URL unreachable or returns non-200 — returns error or change signal as closed
- Invalid or unsupported ATS provider enum — validation error
- Previous hash not supplied — treated as first-time check, always returns changed
- Job ID not found on specified board — returns not-found or closed signal
- Rate limiting or network timeout from ATS provider — may return transient error

## How this service works

Cheap watchdog for closed/materially changed job state. Base mainnet USDC

## Output

Returns a signal indicating whether the job posting has materially changed or been closed compared to the supplied previous hash, along with the current content hash for future comparisons.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2048,
   "description": "Public HTTP(S) URL to inspect, resolve, or compare."
  },
  "board": {
   "type": "string",
   "maxLength": 128,
   "description": "Public board value used to scope this lookup."
  },
  "job_id": {
   "type": "string",
   "maxLength": 256,
   "description": "Public job id value used to scope this lookup."
  },
  "provider": {
   "enum": [
    "greenhouse",
    "lever",
    "ashby"
   ],
   "description": "Public provider value used to scope this lookup."
  },
  "previous_hash": {
   "type": [
    "string",
    "null"
   ],
   "maxLength": 128,
   "description": "Earlier result hash used to detect a material change."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forest-gas-station-job-changed-watchdog-e645d32d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run](https://www.zero.xyz/host/http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/llms.txt)