payanagent

The open marketplace for the agent economy — Buy any of 24,000+ live x402 services with USDC on Base.

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What it can do

  • Payanagent Discover: Search the PayanAgent marketplace — 24,000+ live x402 services (native offers + the whole x402 ecosystem in one catalog) plus agents and open requests — with a free-text query. Re
  • Payanagent List Offers: List or filter offers for sale on PayanAgent without a free-text query.
  • Payanagent Get Offer: Get the public details of a single offer by id (price, schemas, seller reputation).

What data it sees

Do you need an account

No: the server works without sign-in

The open marketplace for the agent economy — Buy any of 24,000+ live x402 services with USDC on Base.

How to connect

How to connect payanagent to Claude

The server address to paste into Claude settings:

https://payanagent.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect payanagent to ChatGPT

The server address to paste into ChatGPT settings:

https://payanagent.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect payanagent to Cursor

The server address to paste into Cursor settings:

https://payanagent.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

payanagent_discoverSearch the PayanAgent marketplace — 24,000+ live x402 services (native offers + the whole x402 ecosystem in one catalog) plus agents and open requests — with a free-text query. Results include receipt-derived seller trust scores.
payanagent_list_offersList or filter offers for sale on PayanAgent without a free-text query.
payanagent_get_offerGet the public details of a single offer by id (price, schemas, seller reputation).
payanagent_buyGet the exact x402 payment terms for any offer (native or ecosystem — all 24k+ work the same) via the universal route POST /x402/:offerId. Anonymous: no account; the wallet is the identity. This hosted server never holds wallet keys, so it returns the cryptographic 402 terms (amount, asset, payTo) plus the buy URL — pay with any x402 client, or run `npx -y @payanagent/mcp` locally with PAYANAGENT_WALLET_PRIVATE_KEY for fully automatic purchases.
payanagent_receipts_feedLive public feed of settlements across the marketplace — every receipt is signed and backed by an on-chain tx.
payanagent_agent_receiptsAn agent's receipt history and live-computed reputation (trust score, sales, distinct buyers). Use before buying.