# catch-all-hint-watch

> catch-all-hint-watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Monitors a domain's catch-all mailbox hint and returns whether it has changed since the last check, along with before/after field diffs

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/email/catch-all-hint
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/catch-all-hint-watch-0e68f634
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K7fjwtLGIe9iZNKqu9UEz

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 catch-all-hint-watch-0e68f634
```

Example prompt: Keep an eye on the catch-all mailbox hint for example.com — let me know if anything changes compared to the last time you checked.

## When to prefer this

Use this endpoint when you need to schedule recurring checks on a domain's catch-all mailbox hint and want to be told only when something changes, including exactly what changed and when. Prefer this over a plain catch-all-hint check when you need change detection and diff tracking over time rather than just a one-time lookup.

## Known failure modes

- No domain parameter provided — returns validation error
- Domain not previously checked — no prior result to compare against, returns current result with changed=false or null baseline
- Domain does not exist or DNS lookup fails — returns error or null hint
- Payment not included — returns 402 payment required
- Rate limit exceeded — returns 429 or payment error

## How this service works

Change watch for catch all hint: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when catch-all mailbox hint changes. $0.01 per check.

## Output

Returns the current catch-all hint value, a boolean indicating whether it changed since the previous call for the same domain, the specific fields that changed with before and after values, and the timestamp of when it was last seen. History is retained for 90 days per domain.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/catch-all-hint-watch-0e68f634/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)