# CoinGecko Onchain Token Price – MegaETH Network

> CoinGecko Onchain Token Price – MegaETH Network is a paid API for AI agents from pro-api.coingecko.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns real-time DEX-based token price and market data for a given contract address on the MegaETH network via CoinGecko's onchain API.

## Facts

- Endpoint: GET https://pro-api.coingecko.com/api/v3/x402/onchain/simple/networks/megaeth/token_price/:address
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coingecko-1b175f85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ot_01aYFbOtM0irTVz2LV

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 coingecko-1b175f85
```

Example prompt: What's the current onchain price and 24-hour trading volume for the MegaETH token at contract address 0xAbCd1234...5678? Include market cap and 24hr price change too.

## When to prefer this

Use this endpoint when you need real-time DEX-sourced token pricing specifically on the MegaETH network and have a contract address. Prefer it over CoinGecko's standard REST API when you need onchain DEX price discovery rather than centralized exchange aggregates, or when the token is only listed on MegaETH DEXes and not on major CEXes.

## Known failure modes

- Invalid or unrecognized contract address returns empty or null price data
- Contract address exists on a different network (not MegaETH), resulting in no match
- Token has no active DEX liquidity on MegaETH, returning empty response
- Payment not provided or insufficient USDC results in 402 Payment Required
- Malformed address format causes a 400 Bad Request
- Rate limit exceeded returns 429 Too Many Requests

## How this service works

Query onchain DEX token price & market data based on the provided token contract addresses on a network.

## Output

Returns a JSON object containing the USD price of the specified token as traded on MegaETH DEXes, along with optional fields such as 24-hour volume, market cap, 24-hour price change percentage, and total reserve in USD, all sourced from CoinGecko's onchain data aggregation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "include_24hr_vol": {
       "type": "boolean"
      },
      "mcap_fdv_fallback": {
       "type": "boolean"
      },
      "include_market_cap": {
       "type": "boolean"
      },
      "include_inactive_source": {
       "type": "boolean"
      },
      "include_24hr_price_change": {
       "type": "boolean"
      },
      "include_total_reserve_in_usd": {
       "type": "boolean"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coingecko-1b175f85/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pro-api.coingecko.com](https://www.zero.xyz/host/pro-api.coingecko.com/llms.txt)