# Livecheck Watch Renew

> Livecheck Watch Renew is a paid API for AI agents from livecheck.fly.dev, paid per call via x402, $2.5/call, status unknown (last checked 2026-10-11).

Renews an existing Livecheck URL watcher subscription by watcher ID, resetting its expiry and checks-remaining quota.

## Facts

- Endpoint: POST https://livecheck.fly.dev/v1/watch/renew?utm_source=zero.xyz
- Price: $2.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/livecheck-watch-renew-a3972694
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pWNjECUICPQ0a0oS96zss

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 livecheck-watch-renew-a3972694 -d '<json body>'
```

Example prompt: My Livecheck watcher wtc_01J8Z0K3N4P5Q6R7S8T9V0WWTC is about to expire — please renew it so it keeps monitoring that job posting.

## When to prefer this

Use this endpoint when you already have an active or recently-expired Livecheck watcher and want to extend its monitoring lifetime without creating a new watcher. Prefer this over creating a new watcher when the baseline snapshot and watcher ID need to remain consistent. This is the right call when checks_remaining is running low or expires_at is approaching.

## Known failure modes

- Invalid or unknown watcher ID returns an error — watcher IDs must start with wtc_ and be valid ULIDs
- Watcher in a terminal state (permanently stopped) may not be renewable
- Payment failure via x402 protocol causes the renewal to not go through
- Malformed request body (missing required id field) returns a 400-level error
- Expired payment or insufficient balance results in renewal failure

## How this service works

Live status of a specific product page, marketplace listing, or job posting, read from the page at call time. Returns live, closed, or unknown plus title and evidence signals. Also one-shot page condition checks, 30-day URL watchers, watcher renew, and signed confirmation of form submissions and orders.

## Output

Returns the renewed watcher object including: unchanged watcher ID, status (active/stopped/expired), target URL and render mode, updated expires_at timestamp, refreshed checks_remaining count, next_check_at and first_check_at timestamps, baseline hash and summary (e.g. 'live 2xx (200); apply form present'), condition detector type, interval in seconds, price paid in USD, and a payment receipt with hash and verify URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Watcher id (wtc_ + ULID). In the JSON body so the well-known URL stays concrete."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "id",
      "tier",
      "expires_at",
      "checks_remaining",
      "interval_s",
      "first_check_at",
      "baseline",
      "price_usd",
      "receipt"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Watcher id (wtc_ + ULID). Unchanged on renew."
      },
      "run": {
       "enum": [
        "none",
        "verify"
       ],
       "type": "string"
      },
      "tier": {
       "enum": [
        "standard"
       ],
       "type": "string"
      },
      "status": {
       "enum": [
        "active",
        "stopped",
        "expired"
       ],
       "type": "string"
      },
      "target": {
       "type": "object",
       "required": [
        "type",
        "url",
        "render"
       ],
       "properties": {
        "url": {
         "type": "string"
        },
        "type": {
         "enum": [
          "url"
         ],
         "type": "string"
        },
        "render": {
         "enum": [
          "never"
         ],
         "type": "string"
        },
        "selector": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      },
      "receipt": {
       "type": "object",
       "required": [
        "hash",
        "verify_url"
       ],
       "properties": {
        "hash": {
         "type": "string"
        },
        "signer": {
         "type": "string"
        },
        "signature": {
         "type": "string"
        },
        "verify_url": {
   
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "wtc_01J8Z0K3N4P5Q6R7S8T9V0WWTC",
  "run": "none",
  "tier": "standard",
  "status": "active",
  "target": {
   "url": "https://boards.greenhouse.io/example/jobs/1842",
   "type": "url",
   "render": "never",
   "selector": null
  },
  "receipt": {
   "hash": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
   "verify_url": "https://livecheck.fly.dev/v1/receipt/wrn_01J8Z0K3N4P5Q6R7S8T9V0WWRN"
  },
  "baseline": {
   "hash": "cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
   "summary": "live 2xx (200); apply form present, no closure banner",
   "captured": true
  },
  "condition": {
   "params": {},
   "detector": "status_change"
  },
  "on_change": {
   "run": "none"
  },
  "price_usd": 2.5,
  "expires_at": "2026-11-09T18:00:00Z",
  "interval_s": 900,
  "next_check_at": "2026-09-10T18:15:00Z",
  "first_check_at": "2026-09-10T18:00:00Z",
  "chain_budget_usd": null,
  "checks_remaining": 5760,
  "chain_balance_usd": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/livecheck-watch-renew-a3972694/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from livecheck.fly.dev](https://www.zero.xyz/host/livecheck.fly.dev/llms.txt)