# x402 Data API – Market Categories

> x402 Data API – Market Categories is a paid API for AI agents from tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-25).

Returns x402 API marketplace categories (crypto, AI, web/search, media, finance, social, geo/weather, dev tools, etc.) with listing counts, origin counts, well-paid listings, total calls, and median price per category.

## Facts

- Endpoint: GET https://tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws/v1/market/categories?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-data-api-market-categories-7908dd16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ecaQTSK82iAb6or2pK2iF

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-data-api-market-categories-7908dd16
```

Example prompt: Can you pull up the x402 market category breakdown for me — I want to see which API categories exist, how many listings and origins each has, and what the median price and total calls look like for each one?

## When to prefer this

Use this endpoint when you need a high-level market overview of the x402 API ecosystem organized by category — ideal for market research, pricing benchmarks, or discovering which API verticals exist. Prefer this over the trending or top-payers endpoints when you want aggregate category-level stats rather than individual API rankings.

## Known failure modes

- Service unavailable if the Lambda backend is cold or overloaded (5xx)
- Empty or stale results if the underlying marketplace data has not been refreshed recently
- Payment required error (402) if the $0.002 USDC per call fee is not provided
- Malformed response if the x402 data pipeline encounters an indexing error

## How this service works

x402 APIs grouped into categories (crypto and on-chain, LLM and AI, web and search, media, finance, social, geo and weather, developer tools, other) with listings, origins, well-paid listings, calls and median price.

## Output

A list of x402 API categories (e.g. crypto and on-chain, LLM and AI, web and search, media, finance, social, geo and weather, developer tools, other), each with: number of listings, number of distinct origins/sellers, count of well-paid listings, total call volume, and median price in USDC.

## 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": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "results": {}
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-data-api-market-categories-7908dd16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws](https://www.zero.xyz/host/tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws/llms.txt)