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

MCP Crypto Toolkit

by nad33mahm3dversion 1.3.0i★ –iComputer or cloud
Registry nameio.github.nad33mahm3d/mcp-crypto-toolkit

Install

Overview

Description from the maker (original English)

Live crypto prices, conversion, gas tracker, portfolio tools, and calculators for AI agents.

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: Computer or cloud
  • Transport: stdio, Streamable HTTP
  • Category: Crypto & blockchain
  • You need to fill in: COINGECKO_API_KEY

Install

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

Before you install

  • Basic checks: 1 of 2 passed Fail
  • Runs on the maker’s server: what you ask it goes through their server.
  • You fill in yourself: COINGECKO_API_KEY, COINGECKO_PRO

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

You need

  • Runs in the cloudNothing to install; it connects over the internet
  • 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 …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp

Or run it on your computer

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

{
  "mcpServers": {
    "crypto-toolkit": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-crypto-toolkit"
      ],
      "env": {
        "COINGECKO_API_KEY": "your-value",
        "COINGECKO_PRO": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http crypto-toolkit https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp

Or run it on your computer

claude mcp add crypto-toolkit --env COINGECKO_API_KEY=your-value --env COINGECKO_PRO=your-value -- npx -y mcp-crypto-toolkit

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": {
    "crypto-toolkit": {
      "url": "https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "crypto-toolkit": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-crypto-toolkit"
      ],
      "env": {
        "COINGECKO_API_KEY": "your-value",
        "COINGECKO_PRO": "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": {
    "crypto-toolkit": {
      "type": "http",
      "url": "https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "crypto-toolkit": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-crypto-toolkit"
      ],
      "env": {
        "COINGECKO_API_KEY": "your-value",
        "COINGECKO_PRO": "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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp

Menu names can differ slightly by plan and over time.

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

Values you fill in

  • COINGECKO_API_KEY secret env
    Optional CoinGecko API key for higher rate limits
  • COINGECKO_PRO env
    Set to 1 to use CoinGecko Pro header with your key

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

What it can do

The server did not answer when we last checked, so we could not read its tools.

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 10, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account nad33mahm3d, 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

  • ✕ Fail

    Endpoint responds

    Did not respond within 6 seconds when we checked

  • – Not applicable

    Sign-in with OAuth

    Did not respond within 6 seconds when we checked

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Crypto & blockchaini

  • More stars than 0% of the other 1635 servers in this category
  • Published to the registry more recently than 43% of the other 1635 servers in this category
  • Basic checks equal to or better than 17% of the other 1635 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 MCP Crypto Toolkit safe?

It passed 1 of 2 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: COINGECKO_API_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.3.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: A2A Gateway — Base Token Guard & x402 Settlement, PayStage Auth Watch, Diamond Bitcoin Intelligence

Alternatives

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Diamond Bitcoin Intelligence

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by diamond.btc-intel.workers.devEarlyUpdated today

Runs in the cloud✓ diamond.btc-intel.workers.dev

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.

mcp-crypto-toolkit

Live crypto prices, conversion, gas tracker, portfolio tools, and calculators for AI agents.

Ask Claude: *What's ETH doing? Top 10 coins? Gas on Base? What's my portfolio worth?*

Hosted (Claude.ai Custom Connector): https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp Docs: DeepWiki · mcpservers.org

Features

  • Live prices with market cap, volume, rank, ATH/ATL (CoinGecko)
  • Convert between crypto and fiat (optimized PKR via Binance P2P when needed)
  • Search coins by name/symbol
  • Top coins + gainers/losers snapshot
  • Compare 2–5 coins side by side
  • Portfolio valuation (batch holdings)
  • Historical point-in-time + range charts (7d/30d/…)
  • EVM gas tracker with USD transfer estimates
  • Profit/loss calculator with exchange + network fees
  • Trending coins + Crypto Fear & Greed Index
  • MCP prompts for common workflows
  • Zero config — no API key required (optional COINGECKO_API_KEY for higher limits)
  • stdio + HTTP + Cloudflare Workers transports

Quick Install

npx -y mcp-crypto-toolkit

Installation

Claude Desktop / Cursor / Windsurf
{

"mcpServers": { "crypto-toolkit": { "command": "npx", "args": ["-y", "mcp-crypto-toolkit"] } } }

Local build:

{

"mcpServers": { "crypto-toolkit": { "command": "node", "args": ["/ABSOLUTE/PATH/TO/mcp-crypto-toolkit/dist/index.js"] } } }

HTTP server
npm run build

npm run start:http

POST http://localhost:3000/mcp

Deploy (Smithery / remote MCP) — optional

You do not need paid hosting for discoverability. This server already installs via npx -y mcp-crypto-toolkit (stdio) and is listed on the Official MCP Registry. Glama and PulseMCP ingest from there — no Fly/Railway bill required.

Only deploy HTTP if you want a remote /mcp endpoint (e.g. Claude.ai Custom Connector or Smithery URL publish).

Claude.ai Custom Connector

Public hosted endpoint (Cloudflare Workers):

https://mcp-crypto-toolkit.nad33mahm3d.workers.dev/mcp
  1. In Claude.ai: Settings → Connectors → Add custom connector
  2. Paste the URL above (must include /mcp)
  3. You should see 10 tools (get price, convert, trending, …)

Or deploy your own (Cloudflare / Docker / Render) and use https://YOUR-HOST/mcp. After upgrading a hosted server, remove and re-add the connector if tools still show as empty.

Do not put a remote URL in claude_desktop_config.json — that file is stdio-only. For Claude Desktop local use, prefer:

{

"mcpServers": { "crypto-toolkit": { "command": "npx", "args": ["-y", "mcp-crypto-toolkit"] } } }

Cloudflare Workers (recommended remote — free tier)

Uses the web-standard MCP transport (src/worker.ts) — no Docker required.

Live demo: health · MCP

npm install

npx wrangler login npm run deploy:cf

After deploy: https://mcp-crypto-toolkit. .workers.dev/health Claude / Smithery URL: https://mcp-crypto-toolkit. .workers.dev/mcp

Local preview: npm run dev:cf

Optional secrets / vars:

npx wrangler secret put COINGECKO_API_KEY

npx wrangler secret put MCP_API_KEY # optional: require Bearer / x-api-key on /mcp

Pro keys also need: wrangler.toml [vars] COINGECKO_PRO = "1"

Optional: RATE_LIMIT_PER_MINUTE = "60" (default)

CI: add repo secrets CLOUDFLARE_API_TOKEN + CLOUDFLARE_ACCOUNT_ID — Worker auto-deploys on GitHub Release (and via workflow_dispatch).

Render (free — no credit card)

  1. Fork/connect repo at render.com
  2. New → Blueprint → point at this repo (render.yaml uses the Free plan)
  3. After deploy: https://YOUR-SERVICE.onrender.com/health
  4. Smithery: publish https://YOUR-SERVICE.onrender.com/mcp

Free tier sleeps after ~15 min idle; first request may take ~30s to wake.

Docker (local / your own VPS)

docker build -t mcp-crypto-toolkit .

docker run -p 3000:3000 mcp-crypto-toolkit

Paid PaaS (if you outgrow free tier): Fly.io and Railway work with the included fly.toml / railway.toml but are not free long-term.

Optional env: COINGECKO_API_KEY, COINGECKO_PRO=1, gas oracle keys (see table below).

Tools (10)

ToolDescription
get_priceLive price + market cap, volume, rank, ATH/ATL
convertCrypto ↔ fiat/crypto conversion
search_coinSearch by name or symbol
top_coinsTop N by market cap/volume + gainers/losers
compare_coinsSide-by-side compare 2–5 coins
portfolio_valueValue a list of holdings
historical_pricePoint date or range chart + investment snapshot
gas_trackerGas fees + estimated transfer cost (USD)
profit_calcP&L, ROI, break-even (fees + network fee)
trendingTrending coins + Fear & Greed Index

Prompts

PromptPurpose
market-overviewTop coins + trending + market tone
whats-trendingTrending coins + Fear & Greed
analyze-coinPrice + 7d trend for one coin
trade-pnlWalk through a P&L calc
gas-checkGas + transfer cost advice

Example prompts

  1. *What's the current price of Bitcoin and its market cap?*
  2. *Search for coins matching "pepe"*
  3. *Show top 10 coins and today's gainers*
  4. *Compare BTC, ETH, and SOL*
  5. *Value my portfolio: 0.5 BTC and 2 ETH in USD*
  6. *What was ETH on 01-01-2024, and what would $1000 then be worth now?*
  7. *Show SOL's 30-day price range*
  8. *What's gas on Base right now in USD?*
  9. *I bought at 100, sold at 120, qty 10, 0.1% fees — profit?*
  10. *What's trending and what's the Fear & Greed index?*

Development

git clone https://github.com/nad33mahm3d/mcp-crypto-toolkit

cd mcp-crypto-toolkit npm install npm test npm run build npm run inspector

Optional env
VariablePurpose
COINGECKO_API_KEYHigher CoinGecko rate limits (still optional)
COINGECKO_PRO=1Use Pro header with your key
MCP_API_KEYWorker only: require Bearer / x-api-key on /mcp
RATE_LIMIT_PER_MINUTEWorker only: default 60
ETHERSCAN_API_KEY / BSCSCAN_API_KEY / …Better gas oracles
OPTIMISM_API_KEYOptimism gas oracle
PORTHTTP server port (default 3000)

Without gas API keys, gas falls back to Blocknative then static estimates.

Contributing

See CONTRIBUTING.md for setup, PR guidelines, and the release process.

Releasing (maintainers)
  1. One-time: npm package Settings → Trusted Publisher → GitHub Actions → repo nad33mahm3d/mcp-crypto-toolkit, workflow publish.yml, environment `release`, allow `npm publish`
  2. Update CHANGELOG.md
  3. Create a GitHub Release with tag vX.Y.Z
  4. Actions publishes to npm via OIDC (no NPM_TOKEN; provenance automatic)

API Credits

License

MIT — see LICENSE

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