Enable AI agents to pay for verifiable digital services using x402 and receive cryptographically signed Outcome Receipts as proof of completed work. Agent Embassy supports URL claim verification, paid recovery registration, and GPU compute market data for agent-driven commerce and transaction verification.
ChatGPT is OpenAI's assistant. It can add custom MCP servers as plugins, which lets it call your tools from a conversation.
This guide connects Agent Embassy to ChatGPT through MewCP, so ChatGPT can use Agent Embassy's 14 tools, like register_recovery, verified_check and prove_it.
Agent Embassy needs no credentials, but every call still runs through MewCP: scoped, checked and logged like any other.
More apps
Beyond Payday helps AI agents analyze household finances using real financial records, including monthly cash flow, net worth, income, bills, assets, debts, savings goals, and retirement projections. Create and update financial records, track goal progress, and compare net-worth history.
Laso Finance enables AI agents to manage financial operations through managed wallets, prepaid cards, gift cards, bank payments, withdrawals, balance checks, and x402 payments to external APIs, with automated USDC settlement and configurable spending guardrails.
XDC AI is agent-native commerce on the XDC Network. AI agents discover APIs in a curated marketplace and pay for them per call with USDC over the x402 protocol — from a non-custodial smart wallet, within an on-chain spending limit you control, and without ever holding gas.
The Stripe MCP Server lets AI agents manage customers, products, prices, subscriptions, invoices, payment links, refunds, and disputes, retrieve payment data, and search Stripe’s API documentation.
Other clients
Agent Embassy works the same way in every client below. Pick yours for its own guide.
Free to start.
Scope access to the exact Agent Embassy tools and accounts you allow, work and personal side by side. Anything outside that scope is refused at call time, even when the model asks for it.
Each call is logged: what ran, on which account, and whether it worked. Failures come back structured, so the agent knows whether to retry instead of guessing.
Every app sits behind one secure MCP URL, and there is no server for you to deploy or keep running. Add an integration in the dashboard and it is live on the next call, with no config to change and no new credentials to wire up. Tools load only when a task needs them, so your agent stays fast and focused however many apps you connect.
In ChatGPT, open Plugins and choose Add custom MCP.
Name it "mewcp" and paste the server URL.
Click Connect. A sign-in window opens; sign in to MewCP and approve access. No API key needed.
Start a new chat and ask: "List the tools you can use from MewCP." You should see your connected apps.
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/recovery/register with an x402 payment ($1.00, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/check/verify with an x402 payment ($0.15, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/check/prove with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/trust/report with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/markets/compute/history with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/markets/compute/alerts with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/research/paper with an x402 payment ($222.00, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/assurance/check with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Issue an Agent ID: a signed identity attestation binding an agent's public key to a verified accountable principal, with operator details and an expiry. Issuance is refused when the principal cannot be verified — that refusal is what makes the ID worth anything. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/agent-id/issue with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Check an Agent ID's current standing: valid, revoked, expired, or unknown. Returns the identical response shape for every status — the Agent ID, expiry, the full identity chain, an inclusion record, and the signed attestation envelope. Unknown IDs report unknown; never an error. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/agent-id/verify with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Retire an Agent ID instantly. Requires a signature from the accountable principal or the Embassy for cause, over the Agent ID being retired. A retired ID reports revoked on every later check. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/agent-id/revoke with an x402 payment ($0.25, USDC on Base or Arbitrum One).
Renew an Agent ID before it expires: issues a fresh Agent ID carrying the same identity chain with a new expiry, and retires the old one. Requires the same principal-or-Embassy signature as retiring. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/agent-id/renew with an x402 payment ($0.25, USDC on Base or Arbitrum One).
A $25 correction pass over your draft copy: normalizes formatting, verifies every link is alive, confirms your required terms appear, and scans for black-box leaks — then returns the corrected copy with a verification report and a signed receipt. You pay for the pass, never the method. MONETIZED VIA x402 — paid tool, not free. POST https://aemb.pro/v1/copy/correct with an x402 payment ($25.00, USDC on Base or Arbitrum One).
Agents pay for work and prove what happened. MONETIZED VIA x402 — paid tool, not free. GET https://aemb.pro/v1/markets/compute/spot with an x402 payment ($0.25, USDC on Base or Arbitrum One).
