# BlockRun.AI Token Price Lookup

> BlockRun.AI Token Price Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Fetches current token prices by coin identifier (CoinGecko slug or ERC-20 contract address) via a DefiLlama-backed price feed

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/defillama/prices/coingecko:bitcoin,coingecko:ethereum
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-ai-3850c0ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TfuLpvP_2FzbwzacrD8_f

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-3850c0ae
```

Example prompt: What are the current prices of Bitcoin and Ethereum right now? Use coingecko:bitcoin and coingecko:ethereum as the coin identifiers.

## When to prefer this

Use this endpoint when you need fast, on-demand token price lookups by CoinGecko slug or ERC-20 contract address, especially when working in DeFi contexts where DefiLlama coverage of long-tail tokens is important. Prefer over generic crypto APIs when you need ERC-20 contract address-based pricing or want DefiLlama's aggregated price feeds.

## Known failure modes

- Invalid or unrecognized coin identifier returns error or null price
- Malformed coin identifier format (missing namespace prefix) causes lookup failure
- Network timeout or upstream DefiLlama unavailability returns 5xx error
- Payment failure (x402) if USDC balance is insufficient

## 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 mapping each coin identifier to its current price, likely including price in USD and possibly other metadata such as timestamp or confidence.

## Example request

```json
{
 "input": {
  "body": {}
 }
}
```

## 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-3850c0ae/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)