# blockrun.ai Token Price Lookup (DefiLlama)

> blockrun.ai Token Price Lookup (DefiLlama) is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Fetches current prices for one or more crypto tokens using DefiLlama-style coin identifiers (e.g. coingecko:bitcoin or ERC-20 contract addresses)

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/defillama/prices/coingecko:ethereum,coingecko:bitcoin
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-ai-token-price-lookup-defillama-f54d18d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l6qqbspUiG51nceTNcKBr

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 blockrun-ai-token-price-lookup-defillama-f54d18d1
```

Example prompt: What are the current prices of Bitcoin and Ethereum? Use their coingecko identifiers coingecko:bitcoin and coingecko:ethereum.

## When to prefer this

Use this endpoint when you need real-time token prices for one or multiple cryptocurrencies identified by coingecko slugs or ERC-20 contract addresses, especially in DeFi or on-chain analytics contexts where DefiLlama-style identifiers are already in use.

## Known failure modes

- Invalid or unrecognized coin identifier returns no data or an error
- Comma-separated list with one bad identifier may cause partial or full failure
- Network or upstream DefiLlama unavailability returns a 5xx error
- Unsupported chain/contract address format returns empty result
- Payment of 0.001 USDC not provided causes 402 Payment Required

## How this service works

Token price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`). Supports comma-separated lists.

## Output

Returns a JSON object containing current USD prices for each requested coin identifier, keyed by the coin identifier string (e.g. coingecko:bitcoin → price in USD).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "query": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-ai-token-price-lookup-defillama-f54d18d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)