# author-detect-watch

> author-detect-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 changes in article author and byline detection for a given URL, returning the current result, a changed flag, and field-level before/after diffs since the last call.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/site/author
- 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/author-detect-watch-1da0645d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_km-FHN-91-8RegnsyrjMR

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 author-detect-watch-1da0645d
```

Example prompt: Keep an eye on this article URL and let me know if the author or byline detection changes compared to the last time you checked — I want to know exactly which fields changed and what they changed from and to.

## When to prefer this

Use this endpoint when you need to detect changes in article authorship or byline attribution over time for a specific URL, and want a structured diff (field-level before/after) rather than just the current detection result. Prefer this over a one-shot author detection endpoint when you need change tracking, alerting workflows, or audit trails for author attribution. Ideal for scheduled agent polling scenarios.

## Known failure modes

- URL not previously checked — no baseline exists for comparison, changed may default to false or indicate first-run
- URL is inaccessible or returns non-200 — author detection cannot be performed
- 90-day baseline expired — previous result purged, comparison not possible
- Payment not processed — x402 payment required before response is returned
- Rate limit or quota exceeded — call rejected

## How this service works

Change watch for author detect: runs the check and compares it with the result from your previous call for the same url (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 article author and byline detection changes. $0.01 per check.

## Output

Returns the current author/byline detection result for the given URL, a boolean indicating whether it changed since the previous call (stored for 90 days), a detailed field-level diff showing exactly which fields changed with before and after values, and a timestamp of when the result was last seen.

## 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/author-detect-watch-1da0645d/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)