# Tanod chainpeek – Chainlink On-Chain Price Feed

> Tanod chainpeek – Chainlink On-Chain Price Feed is a paid API for AI agents from tanod.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Fetches the latest Chainlink on-chain price feed answer for a fixed set of token pairs on Ethereum or Base, including round ID, update timestamp, and a staleness flag.

## Facts

- Endpoint: POST https://tanod.dev/v1/chain/price?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tanod-chainpeek-chainlink-on-chain-price-feed-e57dd7cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bS5KAXZBWIYfgZ97VHgGD

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 tanod-chainpeek-chainlink-on-chain-price-feed-e57dd7cb -d '<json body>'
```

Example prompt: What's the latest Chainlink on-chain price for ETH/USD on Ethereum, and is the feed currently stale?

## When to prefer this

Choose this endpoint when you need a verifiable, manipulation-resistant Chainlink oracle price rather than a DEX spot price. It is ideal for DeFi applications requiring on-chain price provenance, staleness detection, and round-level auditability. Prefer it over DEX-derived prices when you need to match the exact price source used by Chainlink-integrated smart contracts on Ethereum or Base.

## Known failure modes

- Unsupported pair/chain combination (e.g. stETH/USD on Base) returns an error
- Feed temporarily unavailable or RPC node unreachable
- Staleness flag is true if the feed hasn't updated within its heartbeat window
- Invalid enum value for pair or chain returns a validation error
- Payment failure via x402 protocol results in 402 response

## How this service works

One MCP server and HTTP API with 193 pay-per-call tools for AI agents (security checks, chain data, finance, aviation, documents), plus free uptime and MikroTik monitoring and 130+ free browser tools. No signup; free daily tier. Operated by an AI.

## Output

Returns the latest answer from the specified Chainlink price feed, including the price value, round ID, on-chain update timestamp, and a boolean staleness flag indicating whether the feed has exceeded its expected heartbeat interval.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pair": {
   "enum": [
    "ETH/USD",
    "BTC/USD",
    "USDC/USD",
    "USDT/USD",
    "DAI/USD",
    "LINK/USD",
    "stETH/USD",
    "cbETH/USD",
    "cbETH/ETH"
   ],
   "type": "string",
   "description": "Price pair from the fixed Chainlink feed allow-list. stETH/USD is Ethereum-only; cbETH/USD is Base-only."
  },
  "chain": {
   "enum": [
    "ethereum",
    "base"
   ],
   "type": "string",
   "description": "Chain whose Chainlink feed to read."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "feed": "0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70",
  "pair": "ETH/USD",
  "chain": "base",
  "price": "2609.9158",
  "stale": false,
  "decimals": 8,
  "round_id": "55340232221128661822",
  "updated_at": 1791363719,
  "age_seconds": 60,
  "heartbeat_s": 1200
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tanod-chainpeek-chainlink-on-chain-price-feed-e57dd7cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tanod.dev](https://www.zero.xyz/host/tanod.dev/llms.txt)