# chain-ops

> Build AI agents that pay. chain-ops ships @chain-ops/agent-sdk — a one-line SDK that combines x402 payments (V1 + V2) with ERC-8004 on-chain agent identity — plus live pay-per-call APIs priced in USDC on Base. No API keys, no subscriptions.

chain-ops bridges two protocols that don't talk to each other: x402 gives AI agents a payment rail (HTTP 402 Payment Required), and ERC-8004 gives them an on-chain identity and reputation. The SDK wires them together so `await agent.pay(url)` handles identity attachment, EIP-712 signing, trust checks, and reputation updates in a single call.

## SDK

- [npm: @chain-ops/agent-sdk](https://www.npmjs.com/package/@chain-ops/agent-sdk): One-line x402 + ERC-8004 SDK for Node 18+. MIT licensed.
- [GitHub](https://github.com/dlrjsdl200-byte): Source code and issues.

Quickstart:

```
npm install @chain-ops/agent-sdk viem
```

```ts
import { createAgent } from "@chain-ops/agent-sdk";
const agent = createAgent({ account: process.env.PRIVATE_KEY, network: "base" });
await agent.registerAgent({ name: "my-agent", tags: ["gas", "evm"] }); // one-time
const { body } = await agent.pay("https://api.mgo.chain-ops.xyz/gas/basic");
```

## APIs (pay-per-call via x402, USDC on Base)

- [MGO — Multi-chain Gas Optimizer](https://api.mgo.chain-ops.xyz/llms.txt): Compare real-time gas prices across 9 EVM chains and get the cheapest-chain recommendation. $0.001/call basic (ETH, Base, Arbitrum, Optimism), $0.002/call premium (adds BNB, Polygon, Avalanche, zkSync, Hyperliquid). Free demo endpoint: https://api.mgo.chain-ops.xyz/gas/demo
- [npm: chain-ops-mgo](https://www.npmjs.com/package/chain-ops-mgo): MGO client package with auto-pay via @chain-ops/agent-sdk.
- MCP endpoint: https://x402-gas-api.vercel.app/mcp (Streamable HTTP, registered on Smithery)

## Protocols

- [x402](https://x402.org): HTTP-native micropayment protocol (402 Payment Required).
- [ERC-8004](https://github.com/ethereum/ERCs/blob/master/ERCS/erc-8004.md): Trustless Agents — on-chain agent identity and reputation.

## Optional

- In the pipeline: HyperPulse (Hyperliquid intelligence) and Insider Scanner (Polymarket insider detection), both in private development.
- Contact: dlrjsdl200@naver.com