# QuietSignal Catalog Health Toolkit

> QuietSignal Catalog Health Toolkit is a paid API for AI agents from 83-29-153-50.sslip.io, paid per call via x402, $0.05/call, status down (last checked 2026-10-12).

Returns a machine-readable catalog health check summary including schema, product metadata, and methodology facts for AI agents

## Facts

- Endpoint: GET https://83-29-153-50.sslip.io/v1/catalog-health-toolkit?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quietsignal-catalog-health-toolkit-c09f3267
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QdWDlSJ93CjC_Vgsdxein

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 quietsignal-catalog-health-toolkit-c09f3267
```

Example prompt: Pull the QuietSignal catalog-health-toolkit facts for me — I want to see the schema version, product name, runtime, and whether any paid calls have been attempted.

## When to prefer this

Choose this endpoint when you need a lightweight, read-only health check of the QuietSignal catalog-health-toolkit specifically — useful for agents that need to verify catalog schema integrity, product runtime, or methodology status before making further API calls. It is not a general-purpose catalog search tool; prefer it for deterministic, structured fact retrieval about this specific catalog product.

## Known failure modes

- HTTP 402 if USDC payment over Base is not provided or insufficient
- Malformed or missing schema field if the catalog entry is incomplete
- Empty files array if no files are registered against the catalog
- Timeout if the sslip.io host is unreachable
- Unexpected schema version if the endpoint has been updated without notice

## How this service works

QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.

## Output

A JSON object containing: schema version string (e.g. 'catalog-health-toolkit/v1'), product details (name and runtime), methodology flags (e.g. whether paid calls have been attempted), and a list of associated files. Returns an empty files array if none are registered.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "files": [],
  "schema": "catalog-health-toolkit/v1",
  "product": {
   "name": "PayanAgent catalog-health checker toolkit",
   "runtime": "Node.js 18+"
  },
  "methodology": {
   "paid_calls_attempted": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quietsignal-catalog-health-toolkit-c09f3267/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 83-29-153-50.sslip.io](https://www.zero.xyz/host/83-29-153-50.sslip.io/llms.txt)