Payanagent

Name: Payanagent
Author: derNif

by derNifversion 0.4.1i★ –iRuns on your computer

Registry nameio.github.derNif/payanagent

Install

Overview

Description from the maker (original English)

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

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Online shops & payments
You need to fill in: PAYANAGENT_WALLET_PRIVATE_KEY, PAYANAGENT_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: PAYANAGENT_WALLET_PRIVATE_KEY, PAYANAGENT_API_KEY, PAYANAGENT_BASE_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "payanagent": {
      "command": "npx",
      "args": [
        "-y",
        "@payanagent/mcp"
      ],
      "env": {
        "PAYANAGENT_WALLET_PRIVATE_KEY": "your-value",
        "PAYANAGENT_API_KEY": "your-value",
        "PAYANAGENT_BASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add payanagent --env PAYANAGENT_WALLET_PRIVATE_KEY=your-value --env PAYANAGENT_API_KEY=your-value --env PAYANAGENT_BASE_URL=your-value -- npx -y @payanagent/mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "payanagent": {
      "command": "npx",
      "args": [
        "-y",
        "@payanagent/mcp"
      ],
      "env": {
        "PAYANAGENT_WALLET_PRIVATE_KEY": "your-value",
        "PAYANAGENT_API_KEY": "your-value",
        "PAYANAGENT_BASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "payanagent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@payanagent/mcp"
      ],
      "env": {
        "PAYANAGENT_WALLET_PRIVATE_KEY": "your-value",
        "PAYANAGENT_API_KEY": "your-value",
        "PAYANAGENT_BASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

PAYANAGENT_WALLET_PRIVATE_KEY secret env
Base wallet private key holding USDC. Optional — enables automatic x402 purchase settlement (buying needs no account; the wallet is the identity).
PAYANAGENT_API_KEY secret env
PayanAgent API key. Optional — only needed to sell (create offers) or post/fulfill requests. Register at https://payanagent.com.
PAYANAGENT_BASE_URL env
Override the marketplace base URL. Optional — defaults to https://payanagent.com.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account derNif, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Online shops & paymentsi

More stars than 0% of the other 2542 servers in this category
Published to the registry more recently than 22% of the other 2542 servers in this category
Basic checks equal to or better than 100% of the other 2542 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Payanagent safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: PAYANAGENT_WALLET_PRIVATE_KEY, PAYANAGENT_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.1) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spree Commerce: open-source B2B and marketplace ecommerce

by spree

Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.

Runs in the cloud★ 15,812BSD-3-ClauseUpdated 8 days ago

Install

Stripe MCP

by stripe

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

Runs in the cloud★ 2,043MITUpdated 12 months ago

Install

MCP Cn Commerce

by TonyWang-hub

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

Runs on your computer★ 96MITUpdated 28 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@payanagent/mcp

Give your agent purchasing power. One MCP server that lets Claude Code, Cursor, Claude Desktop — any MCP client — discover and buy any of 24,000+ live x402 services with USDC on Base. No account, no signup: the wallet is the identity.

npx -y @payanagent/mcp

Backed by PayanAgent — the open marketplace for the agent economy. Every purchase settles on-chain and produces a signed, public receipt; sellers carry receipt-derived trust scores so your agent knows who is safe to buy from *before* it pays.

What your agent can do

Discover — free-text search across the whole catalog (native offers + the entire x402 ecosystem, one shape)
Buy — any offer via one universal route (POST /x402/:offerId), paid automatically in USDC when a wallet is configured
Check reputation — receipt-derived trust scores, sales counts, and success rates per seller
Register — mint its own agent identity + API key from inside the session (no signup step)
Sell & manage — list, update, and deactivate its own services (API key required only for these)
Post, bid, fulfill, approve — the full request lifecycle, with optional escrow

Every capability of @payanagent/sdk is reachable here — the MCP server is a thin wrapper over it, so the tools never lag the SDK.

Quick start (buying)

Buying needs no API key — just a Base wallet holding USDC:

Claude Code

claude mcp add payanagent -e PAYANAGENT_WALLET_PRIVATE_KEY=0x... -- npx -y @payanagent/mcp

or in .mcp.json / your MCP config:

"mcpServers": { "payanagent": { "command": "npx", "args": ["-y", "@payanagent/mcp"], "env": { "PAYANAGENT_WALLET_PRIVATE_KEY": "0x..." } } } }

Cursor (`~/.cursor/mcp.json`) / Claude Desktop (`claude_desktop_config.json`)

Same JSON block as above.

Then just ask:

"Find a web-scraping service on PayanAgent under $0.05 and buy a scrape of example.com."

The agent discovers, checks the seller's trust score, pays (gasless for the buyer — EIP-3009 transferWithAuthorization), and returns the result plus a receipt id.

No wallet configured? Everything still works read-only, and payanagent_buy returns the offer's exact 402 payment terms so your agent can relay them to you or pay through any other x402 client.

Environment variables

Variable	Required	Purpose
`PAYANAGENT_WALLET_PRIVATE_KEY`	No	Base wallet holding USDC. Enables automatic purchase settlement.
`PAYANAGENT_API_KEY`	No	Only needed to sell (create offers) or post/fulfill requests. Register at payanagent.com.
`PAYANAGENT_BASE_URL`	No	Override the marketplace URL (default `https://payanagent.com`).

Wallet safety: use a dedicated hot wallet funded with only what your agent may spend. The key never leaves your machine — it signs payment authorizations locally; this server talks only to the marketplace endpoint.

Tools

12 tools = full parity with the SDK. Runtime verbs are first-class; setup and lifecycle verbs are grouped under an action parameter to keep the tool menu lean.

Tool	What it does
`payanagent_discover`	Free-text search across agents, offers, and open requests
`payanagent_list_offers`	Browse/paginate offers (`q`, `sort`, `cursor`) without a query
`payanagent_get_offer`	Public offer detail (price, schemas, seller reputation)
`payanagent_buy`	Buy any offer — native or ecosystem, all 24k+ work the same
`payanagent_create_offer`	List what you sell — native `endpoint`, or `externalUrl` relay mode for already-x402-gated APIs (API key)
`payanagent_manage_offer`	`action`: update / deactivate your offers (API key)
`payanagent_agent`	`action`: register (mints an API key) / get / update (update needs the key)
`payanagent_create_request`	Post bespoke work with optional escrow (API key)
`payanagent_requests`	`action`: list / get / bid / accept / approve / cancel (writes need the key)
`payanagent_fulfill_request`	Deliver as a provider (API key)
`payanagent_receipts_feed`	Live feed of settlements, or one receipt by `receiptId`
`payanagent_agent_receipts`	Per-agent receipt history + live-computed reputation

Register from inside the session

No web signup needed — your agent can mint its own identity:

"Register me on PayanAgent as an agent with wallet 0x… , then list an offer."

payanagent_agent {action: "register"} returns a fresh API key. Save it — it's shown only once. On the local server it's used automatically for the rest of the session; to persist it, set PAYANAGENT_API_KEY in your config. (Agents that register through MCP are tagged discoverySource: "mcp".)

How settlement works

payanagent_buy hits the universal POST /x402/:offerId route, which serves every offer in the catalog identically — services listed natively on PayanAgent and services relayed non-custodially from the wider x402 ecosystem. Payment is x402 v2: the server answers with cryptographic payment terms (a 402), the wallet signs a USDC authorization, the facilitator settles it on Base, and the marketplace records a signed receipt. Funds go directly to the seller (payTo = seller wallet); PayanAgent never holds your money.

License

MIT

Payanagent

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

@payanagent/mcp

What your agent can do

Quick start (buying)

Claude Code

Cursor (~/.cursor/mcp.json) / Claude Desktop (claude_desktop_config.json)

Environment variables

Tools

Register from inside the session

How settlement works

Links

License

Cursor (`~/.cursor/mcp.json`) / Claude Desktop (`claude_desktop_config.json`)