# CoinGecko Onchain DEX Token Price – Optimism Network

> CoinGecko Onchain DEX Token Price – Optimism 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 2026-09-14).

Returns real-time DEX token price and market data for tokens on the Optimism network, queried by contract address.

## Facts

- Endpoint: GET https://pro-api.coingecko.com/api/v3/x402/onchain/simple/networks/optimism/token_price/probe
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coingecko-onchain-dex-token-price-optimism-network-119c5426
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h_ZMonlP5c-guxiSxZs1P

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-onchain-dex-token-price-optimism-network-119c5426
```

Example prompt: Can you pull the current onchain DEX price and 24-hour volume for the OP token at contract address 0x4200000000000000000000000000000000000042 on Optimism using CoinGecko?

## When to prefer this

Use this endpoint when you need real-time onchain DEX token prices specifically on the Optimism (OP) network and have a token contract address. Prefer this over CoinGecko's standard token price endpoints when you need DEX-sourced liquidity data (not CEX prices) or when the token is only traded onchain. Choose network-specific sibling endpoints for Base, Ethereum, or other chains.

## Known failure modes

- Invalid or unrecognized contract address returns empty or null price data
- Token not listed on any Optimism DEX returns no data
- Network-specific endpoint only covers Optimism — requests for other chains will require different endpoints
- Rate limiting or payment failure results in 402 or 429 error
- Inactive token sources excluded unless include_inactive_source is set to true

## 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 queried token(s) sourced from onchain DEX data on the Optimism network, with optional fields including 24-hour trading volume, market capitalization, 24-hour price change percentage, and total reserve in USD. Data reflects real-time DEX liquidity pool pricing.

## 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-onchain-dex-token-price-optimism-network-119c5426/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)