# Paddock AI Agent Commerce Changes Feed

> Paddock AI Agent Commerce Changes Feed is a paid API for AI agents from paddock.finance, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns a changelog of AI agent payment market movements since a given date, including top movers, new services, retired services, and category shifts.

## Facts

- Endpoint: GET https://paddock.finance/api/paddock/mcp/changes
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/paddock-ai-agent-commerce-changes-feed-58da6e9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i1Gj-A0eXEGEQzF0QL3De

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 paddock-ai-agent-commerce-changes-feed-58da6e9c
```

Example prompt: What's changed in the AI agent payments market since January 1, 2025 — show me top movers, new services, and anything that got retired?

## When to prefer this

Use this endpoint when you need a time-bounded diff of the AI agent commerce landscape — specifically what services entered, exited, or shifted in market prominence since a given date. Prefer this over snapshot endpoints when you want change detection rather than a static view, or when building a monitoring workflow that tracks market evolution over time.

## Known failure modes

- Missing or invalid 'since' parameter returns an error
- Date older than 90 days ago is rejected as out of range
- Invalid date format (not YYYY-MM-DD) causes a validation error
- Payment of 0.1 USDC not received results in 402 response
- No data available for the requested window returns empty arrays

## How this service works

Paddock change/diff analysis — one-time query

## Output

A structured report containing: a summary of market changes, top-moving services (gaining/losing traction), newly launched services, retired services, category-level movements, and the date range covered. May indicate if results are limited to rollup data only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "since"
     ],
     "properties": {
      "since": {
       "type": "string",
       "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tool": "get_changes",
  "since": "2026-01-01",
  "new_services": [],
  "category_movements": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/paddock-ai-agent-commerce-changes-feed-58da6e9c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from paddock.finance](https://www.zero.xyz/host/paddock.finance/llms.txt)