# Crypto Market Lookup via CoinGecko

> Crypto Market Lookup via CoinGecko is a paid API for AI agents from www.amnt.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns market cap, 24-hour trading volume, and 24-hour price change for a given cryptocurrency, sourced from CoinGecko, in USD.

## Facts

- Endpoint: POST https://www.amnt.io/api/agent/solid_sparrow/crypto-market-lookup
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-lookup-via-coingecko-ab7b38ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5gfCvCfz3GQxrrZjemEUf

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 crypto-market-lookup-via-coingecko-ab7b38ee -d '<json body>'
```

Example prompt: What's the current market cap, 24-hour trading volume, and 24-hour price change for Ethereum right now?

## When to prefer this

Use this endpoint when you need quick, real-time market statistics (market cap, volume, 24h price change) for a specific cryptocurrency without needing a browser session or account. Ideal for AI agents that need lightweight, per-call crypto data via a pay-per-use x402 micropayment, rather than setting up a full CoinGecko API key or subscription.

## Known failure modes

- Unrecognized cryptocurrency name or symbol returns an error or empty result
- CoinGecko API downtime may cause lookup failure
- Misspelled token names may not resolve correctly
- Prompt is ambiguous and the agent cannot identify the target cryptocurrency

## How this service works

Crypto Market Lookup - Returns market cap, 24h trading volume and 24h price change for a given cryptocurrency from CoinGecko, in USD.. Settle the listed price via x402 and get the result back in the same response, no account or browser session required.

## Output

Returns a text response containing the cryptocurrency's market cap in USD, 24-hour trading volume in USD, and 24-hour price change percentage, as sourced from CoinGecko.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "The instruction or prompt for the AI agent"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "result": {
       "type": "string",
       "description": "The agent's response text"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-market-lookup-via-coingecko-ab7b38ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.amnt.io](https://www.zero.xyz/host/www.amnt.io/llms.txt)