# x402 Market Feed

> x402 Market Feed is a paid API for AI agents from 76.13.79.47.nip.io, paid per call via x402, $0.001/call, status down (last checked 2026-10-13).

Returns ranked demand signals for paid API resources on the x402 network, including call volumes, payer counts, pricing, estimated revenue, and AI-generated build briefs with recommended experiments and warnings.

## Facts

- Endpoint: GET https://76.13.79.47.nip.io/token-signal-x402/v1/x402-market-feed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-market-feed-543b0374
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sKxdsXMOCDHrwk7JcP5Op

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 x402-market-feed-543b0374
```

Example prompt: Show me the top 25 most in-demand paid API resources on x402 related to crypto, filtering for at least 5 unique payers — I want to see the revenue estimates, pricing, and the build brief with experiment recommendations.

## When to prefer this

Use this endpoint when an agent or developer needs to understand real market demand on the x402 paid-API ecosystem — especially for deciding what API to build, price, or purchase. It is more actionable than raw API directories because it combines live usage signals (calls, payers, revenue) with AI-generated build guidance. Prefer it over generic API marketplaces when the goal is specifically x402-native paid resource discovery.

## Known failure modes

- No results returned if query keyword matches no listed x402 resources
- min_payers filter too high may return empty result set
- Payment not processed (x402 payment failure) results in 402 response with no data
- Stale data if x402 discovery index hasn't refreshed recently
- Invalid query parameter type returns schema validation error

## How this service works

x402 Market Feed: ranked paid-resource demand signals from x402 discovery, including 30-day calls, unique payers, price, estimated gross revenue, tags, niche summaries, and a buildBrief with recommended experiments, pricing rules, and do-not-build warnings for agents deciding what crypto/API endpoint to build, buy, or price. The crypto preset is shaped for agents evaluating token-risk, crypto-news, onchain-prefilter, and x402 seller-tool demand.

## Output

A ranked list of paid x402 API resources matching the query, each with 30-day call counts, unique payer counts, price per call, estimated gross revenue, descriptive tags, a niche summary, and a buildBrief object containing recommended experiments, pricing rules, and explicit do-not-build warnings.

## 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": {
      "limit": {
       "type": "string",
       "default": "25"
      },
      "query": {
       "type": "string",
       "default": "crypto"
      },
      "min_payers": {
       "type": "string",
       "default": "5"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-market-feed-543b0374/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 76.13.79.47.nip.io](https://www.zero.xyz/host/76.13.79.47.nip.io/llms.txt)