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PopNx MCPMCP servers for people who use AI · explained in plain words

Coinlooter MCP

by Coinlooterversion 0.1.6i★ –iRuns on your computer
Registry nameio.github.Coinlooter/mcp

Install

Overview

Description from the maker (original English)

PayFlowAgent suite: token intel, DeFi, enrich, Base trust (x402).

PopNx MCP’s three pillars

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

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: Crypto & blockchain
  • You need to fill in: X402_BUYER_PRIVATE_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: X402_BUYER_PRIVATE_KEY, PAYFLOWAGENT_API_BASE, PAYFLOWAGENT_DATAFEED_BASE, PAYFLOWAGENT_ENRICH_BASE, PAYFLOWAGENT_TRUST_BASE, X402_BUYER_RPC

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?

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": {
    "coinlooter": {
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "your-value",
        "PAYFLOWAGENT_API_BASE": "your-value",
        "PAYFLOWAGENT_DATAFEED_BASE": "your-value",
        "PAYFLOWAGENT_ENRICH_BASE": "your-value",
        "PAYFLOWAGENT_TRUST_BASE": "your-value",
        "X402_BUYER_RPC": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add coinlooter --env X402_BUYER_PRIVATE_KEY=your-value --env PAYFLOWAGENT_API_BASE=your-value --env PAYFLOWAGENT_DATAFEED_BASE=your-value --env PAYFLOWAGENT_ENRICH_BASE=your-value --env PAYFLOWAGENT_TRUST_BASE=your-value --env X402_BUYER_RPC=your-value -- npx -y payflowagent-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": {
    "coinlooter": {
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "your-value",
        "PAYFLOWAGENT_API_BASE": "your-value",
        "PAYFLOWAGENT_DATAFEED_BASE": "your-value",
        "PAYFLOWAGENT_ENRICH_BASE": "your-value",
        "PAYFLOWAGENT_TRUST_BASE": "your-value",
        "X402_BUYER_RPC": "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": {
    "coinlooter": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "your-value",
        "PAYFLOWAGENT_API_BASE": "your-value",
        "PAYFLOWAGENT_DATAFEED_BASE": "your-value",
        "PAYFLOWAGENT_ENRICH_BASE": "your-value",
        "PAYFLOWAGENT_TRUST_BASE": "your-value",
        "X402_BUYER_RPC": "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

  • X402_BUYER_PRIVATE_KEY secret env
    Private key of a dedicated payer wallet (Base, USDC) used to auto-pay x402 calls. Without it, only free tools work.
  • PAYFLOWAGENT_API_BASE env
    Base URL of the nad.fun API (default https://nad.payflowagent.net).
  • PAYFLOWAGENT_DATAFEED_BASE env
    Base URL of the Datafeed API (default https://data.payflowagent.net).
  • PAYFLOWAGENT_ENRICH_BASE env
    Base URL of the Enrich API (default https://enrich.payflowagent.net).
  • PAYFLOWAGENT_TRUST_BASE env
    Base URL of the Trust API (default https://trust.payflowagent.net).
  • X402_BUYER_RPC env
    Optional payment RPC endpoint (Base mainnet by default).

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 Coinlooter, 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 Crypto & blockchaini

  • More stars than 0% of the other 1614 servers in this category
  • Published to the registry more recently than 32% of the other 1614 servers in this category
  • Basic checks equal to or better than 100% of the other 1614 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 Coinlooter MCP 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: X402_BUYER_PRIVATE_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 (0.1.6) 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: Highwire, DeFi Quant Yield & Risk Engine, gasrescue

Alternatives

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

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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.

PayFlowAgent — MCP server & reference agent

Pay-per-call APIs for autonomous AI agents. USDC via x402, no signup.

MCP registry name: io.github.Coinlooter/mcp

This repository contains the open-source integration pieces:

PathWhat
/ (root)`payflowagent-mcp` — MCP server for Cursor, Claude Desktop, and custom agents.
examples/screen-bot/Reference polling bot: finds high-score nad.fun tokens every few minutes.

The scoring APIs run on PayFlowAgent infrastructure; this repo is the client surface

so agents and developers can integrate in one step.

Tools (MCP)

nad.fun (Monad)
ToolPriceDescription
score_tokenfree0–100 score, riskLevel, action (rate-limited).
decide_tokenx402Full report: factors, graduation, momentum.
token_summaryx402Graduation progress + momentum (cheap entry).
screen_tokensx402Ranked list of pre-scored fresh tokens.
Datafeed (DeFiLlama)
ToolPriceDescription
sample_yieldsfreeTop yield pools + 3-item opportunity preview (score + reasons).
yield_opportunitiesx402Ranked yield picks with risk score & explainable reasons.

Install (one line)

npx -y payflowagent-mcp@0.1.3

Use it in Cursor

~/.cursor/mcp.json (or project .cursor/mcp.json):

{

"mcpServers": { "payflowagent": { "command": "npx", "args": ["-y", "payflowagent-mcp@0.1.3"], "env": { "PAYFLOWAGENT_API_BASE": "https://nad.payflowagent.net", "PAYFLOWAGENT_DATAFEED_BASE": "https://data.payflowagent.net" } } } }

Use it in Claude Desktop

Same config as Cursor (Settings → Developer → MCP Servers).

Without X402_BUYER_PRIVATE_KEY only free tools work (score_token, sample_yields). Use a dedicated payer wallet (Base, USDC) — never your main wallet.

Configuration (env)
VariableDefaultPurpose
PAYFLOWAGENT_API_BASEhttps://nad.payflowagent.netnad.fun API base URL.
PAYFLOWAGENT_DATAFEED_BASEhttps://data.payflowagent.netDatafeed API base URL.
X402_BUYER_PRIVATE_KEY—Payer wallet key (Base, USDC). Enables paid tools.
X402_BUYER_RPChttps://mainnet.base.orgPayment RPC (optional).

MCP Registry

After npm publish, list in the official registry:

npm install -g @modelcontextprotocol/publisher

cd payflowagent-mcp mcp-publisher login github mcp-publisher publish

Manifest: server.json (io.github.Coinlooter/mcp).

Reference agent

See examples/screen-bot — polls /v1/screen every few minutes, de-duplicates, and alerts on new high-score tokens (optional webhook). Fork it and point it at your own trading logic.

Develop locally

npm install

npm run typecheck npm run build # emits dist/ npm start # stdio server from source (tsx)

Publish to npm

npm run build

npm publish

License

MIT — see LICENSE.

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