# x402 Cartographer – Endpoint Finder

> x402 Cartographer – Endpoint Finder is a paid API for AI agents from finder.marknetic.co.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-04).

Ranks live x402 payment-gated endpoints for a described task, returning up to 10 candidates scored by text relevance, liveness, and on-chain usage.

## Facts

- Endpoint: GET https://finder.marknetic.co.uk/find?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-cartographer-endpoint-finder-8d900e4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w4r80oh-7cgyZ3B1re8wy

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-cartographer-endpoint-finder-8d900e4f
```

Example prompt: Search the x402 Cartographer for live endpoints that can do web search, limit to 5 results, and only show ones under $0.01 per call on Base mainnet (eip155:8453).

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover which x402-compatible, USDC-payable APIs exist for a given task at runtime — especially when the desired capability is unknown ahead of time or the agent wants to compare liveness, cost, and on-chain adoption across candidates before committing to a call.

## Known failure modes

- No endpoints match the task description — returns empty list at no charge
- Invalid CAIP-2 network string causes filtering to fail or return no results
- max_price too low excludes all available endpoints
- limit parameter out of 1–10 range may be ignored or cause an error
- Task description too vague returns low-relevance or mismatched endpoints

## How this service works

Ranks live x402 endpoints for a task such as 'web search', 'token price' or 'pdf to text'. Returns up to 10 endpoints ranked by text match, 7-day liveness probes and on-chain USDC payers with farmed wallets removed. Not charged when nothing matches.

## Output

A ranked list of up to 10 live x402 endpoints matching the task query. Each result includes the endpoint URL, a relevance/liveness score derived from text match and 7-day probe history, on-chain USDC payer counts, and price per call. Returns empty when no endpoints match.

## 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",
     "required": [
      "need"
     ],
     "properties": {
      "need": {
       "type": "string",
       "description": "task in plain words, e.g. web search"
      },
      "limit": {
       "type": "string",
       "description": "1-10 results (default 5)"
      },
      "network": {
       "type": "string",
       "description": "CAIP-2 network, e.g. eip155:8453"
      },
      "max_price": {
       "type": "string",
       "description": "max price per call in USD"
      }
     }
    }
   },
   "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/x402-cartographer-endpoint-finder-8d900e4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from finder.marknetic.co.uk](https://www.zero.xyz/host/finder.marknetic.co.uk/llms.txt)