# Quietforge x402 Services Directory

> Quietforge x402 Services Directory is a paid API for AI agents from qf-api.quietforge-studio.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns a searchable, health-probed directory of x402 pay-per-call API endpoints aggregated from multiple discovery sources

## Facts

- Endpoint: GET https://qf-api.quietforge-studio.workers.dev/v1/x402/services?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quietforge-x402-services-directory-47d3e355
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IT3Zo9-KJCQm22N6qH-8J

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 quietforge-x402-services-directory-47d3e355
```

Example prompt: Show me all currently alive x402 pay-per-call APIs priced under $0.02 on the Base network — give me the first 50 results.

## When to prefer this

Use this endpoint when you need to discover x402 pay-per-call APIs without signup or API keys, especially when filtering by price ceiling, network, uptime status, or discovery source. Prefer this over generic API directories when the agent needs micropayment-compatible endpoints on Base or other blockchains, or when you want health-probed liveness data alongside listings.

## Known failure modes

- Invalid filter combination returns empty results array
- Malformed network CAIP-2 string returns no matches
- offset beyond total count returns empty services array
- Unknown source enum value may be rejected or return error
- Service may return stale probe data if probing is delayed

## How this service works

Pay-per-call document conversion, PDF text extraction, headless-browser rendering of a URL or HTML to PNG / JPEG / PDF, a health-probed directory of x402 pay-per-call endpoints, a sudoku generator (solver-verified, technique-graded puzzles as JSON or a print-ready A4/Letter book), a book typesetter (prose manuscript to a KDP-ready interior PDF + editable docx), a crossword generator (verified freeform grid from your clue/answer pairs as JSON or print-ready PDFs), a family tree chart layout engine (descendant / ancestor / hourglass charts from people+families JSON or a GEDCOM file, as verified layout JSON or print-ready poster and tiled PDFs), and a dataset quality audit tool (duplicates, missing values, type consistency, class imbalance, numeric outliers and PII-pattern counts for a CSV/JSON dataset, as JSON or a one-page PDF summary). Payment: x402 (USDC on Base). No signup, no API key.

## Output

Returns a paginated JSON object with a count of matched services, total available, and an array of service records each containing: endpoint URL, HTTP method, price in USD and atomic units, payment asset and address, network (CAIP-2), source(s), uptime probe results (alive status, latency, last probed timestamp), 30-day call and payer counts, service name, description, and tags. Also includes attribution note and generation timestamp.

## 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",
     "properties": {
      "q": {
       "type": "string",
       "description": "Case-insensitive substring match on resource URL, description or service name"
      },
      "alive": {
       "type": "boolean",
       "description": "Only endpoints that answered their paid route on the last probe"
      },
      "limit": {
       "type": "integer",
       "default": 100,
       "maximum": 500,
       "minimum": 1
      },
      "offset": {
       "type": "integer",
       "default": 0,
       "minimum": 0
      },
      "source": {
       "enum": [
        "cdp",
        "payai",
        "quietforge"
       ],
       "type": "string",
       "description": "Only endpoints seen in this source"
      },
      "network": {
       "type": "string",
       "description": "Exact CAIP-2 network id, e.g. eip155:8453 or solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      },
      "max_price_usd": {
       "type": "number",
       "description": "Only endpoints priced at or below this, in USD (stablecoin listings only)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "total": 400,
  "services": [
   {
    "id": "58f1b7145423b4f0",
    "tags": [
     "Exa"
    ],
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "probe": {
     "alive": true,
     "error": null,
     "tls_ok": true,
     "probed_at": "2026-09-21T00:10:19Z",
     "latency_ms": 412.7,
     "status_code": 402,
     "challenge_price_usd": 0.01,
     "has_payment_required": true
    },
    "method": "POST",
    "pay_to": "0x325bdF6F7efAB24a2210c48c1b64cAb2eAe1d430",
    "scheme": "exact",
    "source": [
     "cdp"
    ],
    "network": "eip155:8453",
    "samples": 6,
    "resource": "https://stableenrich.dev/api/exa/search",
    "calls_30d": 45665,
    "last_seen": "2026-09-21T00:10:12Z",
    "price_usd": 0.01,
    "first_seen": "2026-09-20T18:00:11Z",
    "payers_30d": 192,
    "description": "Exa Search - Neural search across the web",
    "asset_symbol": "USDC",
    "price_atomic": "10000",
    "service_name": "StableEnrich",
    "uptime_recent": 1,
    "uptime_samples": 6,
    "last_updated_upstream": "2026-09-21T00:02:01.433Z"
   }
  ],
  "attribution": "Listing data aggregated from the public Coinbase CDP bazaar and PayAI discovery APIs; probes are ours.",
  "generated_at": "2026-09-21T00:10:12Z",
  "uptime_window": 20
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quietforge-x402-services-directory-47d3e355/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from qf-api.quietforge-studio.workers.dev](https://www.zero.xyz/host/qf-api.quietforge-studio.workers.dev/llms.txt)