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@arcpaylabs/somnia-x402-agent-starter

v0.1.4

Published

Starter client for integrating with ArcPay Somnia x402 paid agent endpoints.

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Git

Maintainers

henrysammarfohenrysammarfo

Keywords

Readme

ArcPay Somnia x402 Agent Starter

This starter is the plug-and-play client for Somnia agent builders who want to sell or consume paid agent work through ArcPay. Point it at ArcPay's live Somnia x402 server, request a protected resource, read the HTTP 402 quote, verify an order, and unlock the result after payment evidence exists.

It covers:

  • reading a payment quote
  • requesting a protected agent resource
  • checking HTTP 402 requirements
  • verifying an order id
  • deriving the agent id locally
  • generating a bring-your-own-agent onboarding payload
  • generating a SOMUSD card delegation plan
  • generating workspace/per-agent policy requirements
  • printing the evidence checklist ArcPay expects before work is marked complete

It does not hold private keys by default. Wallet payment is intentionally left to your app, operator wallet, or agent wallet so teams can plug it into their own custody model.

Setup

npm install
cp src/env.example .env

Commands

node src/agent-client.mjs quote research-agent
node src/agent-client.mjs locked research-agent
node src/agent-client.mjs verify 0xORDER_ID research-agent
node src/agent-client.mjs unlock research-agent 0xORDER_ID
node src/agent-client.mjs agent-id research-agent
node src/agent-client.mjs onboard research-agent https://your-agent.example/work
node src/agent-client.mjs card research-agent 0xAgentWallet
node src/agent-client.mjs policy research-agent 10
node src/agent-client.mjs evidence research-agent

Live Server

https://x402.20.208.46.195.nip.io

Payment Flow

  1. quote the agent slug.
  2. Create an order in AgentOrderBook with the quoted agentId, requestUri, and amountWei.
  3. Provider fulfills the order.
  4. unlock the resource with orderId.

Bring Your Own Agent

Use onboard when you already have a Claude/Codex/custom agent or API endpoint and want it governed by ArcPay:

node src/agent-client.mjs onboard research-agent https://your-agent.example/work

The output includes the Somnia contract addresses, deterministic agentId, x402 endpoint, and the exact next steps for claim-code onboarding, policy assignment, order creation, and audit evidence.

Cards and Policies

Use card to prepare a SOMUSD agent card without opening the dashboard. Use policy to generate the global workspace plus per-agent policy requirements that should be enforced before a signed action.

node src/agent-client.mjs card research-agent 0xAgentWallet
node src/agent-client.mjs policy research-agent 10

These commands generate execution plans and proof requirements. Actual card creation, top-up, spend, and policy writes still require a wallet signature or a backend signer controlled by the builder.

See the main docs at:

https://arcpay-somnia.vercel.app/docs/x402-agent-payments