# MCPFax Reliability Change Feed

> MCPFax Reliability Change Feed is a paid API for AI agents from mcpfax-reliability.bowling-anthony.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).

Returns a feed of recent wallet changes, rating downgrades, and listing deaths for MCP/agentic-market providers

## Facts

- Endpoint: GET https://mcpfax-reliability.bowling-anthony.workers.dev/payto-change-feed?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mcpfax-reliability-change-feed-c8960436
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6cM4mTDs2eL8aRgBUKEQV

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 mcpfax-reliability-change-feed-c8960436
```

Example prompt: Pull the latest reliability change feed for me — I want to see any recent wallet changes, rating downgrades, or listings that have died on the agentic marketplace so I know which providers to avoid.

## When to prefer this

Use this endpoint when you need to monitor the health and trustworthiness of providers in the agentic/MCP marketplace — particularly when checking for wallet fraud signals (unexpected wallet changes), reliability drops (rating downgrades), or endpoint deaths before routing traffic or payments. Prefer this over manual provider checks when you want a consolidated, recent change feed rather than point-in-time status lookups.

## Known failure modes

- No recent changes may return an empty feed rather than an error
- Invalid or malformed request body returns a 400 error
- Payment failure via x402 protocol returns 402 Payment Required
- Service unavailable returns 503 with Cloudflare Workers error
- Stale data if the feed has not been refreshed recently

## How this service works

Observed change feed for listed x402 sellers: declared payTo changes with before/after values, other declared-terms changes (price, facilitator, fee payer), registry removals and returns, rating actions, and grade downgrades. Every response reports measured per-category coverage for the requested window.

## Output

A structured feed of recent reliability events including wallet address changes, rating downgrade records with before/after scores, and listing death notices (delisted or unreachable endpoints), each with timestamps and provider identifiers.

## 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"
    }
   },
   "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/mcpfax-reliability-change-feed-c8960436/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcpfax-reliability.bowling-anthony.workers.dev](https://www.zero.xyz/host/mcpfax-reliability.bowling-anthony.workers.dev/llms.txt)