# Agent Weather Access Policy Changes

> Agent Weather Access Policy Changes is a paid API for AI agents from api.agentweather.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns a changelog of access-policy file changes (robots.txt, terms, etc.) across all tracked domains since a specified timestamp

## Facts

- Endpoint: GET https://api.agentweather.io/v1/access-policy/changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-weather-access-policy-changes-ce601ead
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ubw3pui1Pmmy2fNtITdeT

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 agent-weather-access-policy-changes-ce601ead
```

Example prompt: Show me all the access policy changes — robots.txt updates, new user-agent rules, HTTP status flips — across tracked domains since 48 hours ago.

## When to prefer this

Use this endpoint when you need a structured, diff-level changelog of robots.txt and access policy file changes across a broad set of tracked domains, especially when you care about SHA-256 hash diffs, HTTP status transitions, and user-agent group-level changes in robots.txt. Prefer it over manual crawling when you want a ready-made audit trail without redistribution of file text, and when you need to detect AI-crawler-specific rule changes at scale.

## Known failure modes

- Invalid ISO 8601 format for 'since' parameter returns a 400 error
- Requesting a 'since' date too far in the past may return an empty or truncated result set
- Payment failure (x402) returns 402 if USDC payment is not completed
- Network timeout if the tracked domain set is large
- Empty changes array if no access policy files changed in the requested window

## How this service works

Change events across all tracked domains since a time (GET /v1/access-policy/changes?since=ISO8601, default 7 days): domain, file path, time, old and new SHA-256 and HTTP status, and for robots.txt a summary of user-agent groups added or removed and rule counts changed. File text is not redistribut…

## Output

A JSON object with a generated_at timestamp, the since cutoff used, and an array of change records. Each record includes the domain, file path (e.g. /robots.txt), the time the change was detected, old and new SHA-256 hashes, old and new HTTP status codes, and for robots.txt files a structured summary of user-agent groups added or removed and how rule counts changed. File text content is not redistributed.

## 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": {
      "since": {
       "type": "string",
       "format": "date-time",
       "description": "ISO 8601 start time; default 7 days ago"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "generated_at",
      "since",
      "changes"
     ],
     "properties": {
      "since": {
       "type": "string",
       "format": "date-time"
      },
      "changes": {
       "type": "array"
      },
      "generated_at": {
       "type": "string",
       "format": "date-time"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-weather-access-policy-changes-ce601ead/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentweather.io](https://www.zero.xyz/host/api.agentweather.io/llms.txt)