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MCP Address Latest

by CryptoAPIs-ioversion 0.5.0i★ 1iRuns on your computer
Registry nameio.github.CryptoAPIs-io/mcp-address-latest

How to install

What it does

MCP server for current balance and state of EVM, UTXO, Solana, XRP, Kaspa addresses via Crypto APIs

  • Connects Runs on your computer
  • Account or key Needs CRYPTOAPIS_API_KEY
  • Category Crypto & blockchain

Install

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

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCP Address Latest for Claude on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "address-latest": { "command": "npx", "args": [ "-y", "@cryptoapis-io/mcp-address-latest" ], "env": { "CRYPTOAPIS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For CRYPTOAPIS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the MCP Address Latest tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Sign up and create a MCP Address Latest key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Open the Claude desktop app’s settings file

    SettingsDeveloperEdit Config

  4. Paste these settings and save the file

    {
  "mcpServers": {
    "address-latest": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-address-latest"
      ],
      "env": {
        "CRYPTOAPIS_API_KEY": "your-value"
      }
    }
  }
}

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Quit Claude and open it again

  6. Try it

    Use MCP Address Latest and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using MCP Address Latest or shows a MCP Address Latest tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect MCP Address Latest yet

MCP Address Latest runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect MCP Address Latest

  • You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
  • You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)
  • You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)
  • You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Crypto & blockchain that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Works with Claude Code, with some setup first

You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCP Address Latest for Claude Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user address-latest --env CRYPTOAPIS_API_KEY=your-value -- npx -y @cryptoapis-io/mcp-address-latest 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For CRYPTOAPIS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the MCP Address Latest tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Sign up and create a MCP Address Latest key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  4. Paste this command and press Enter

    claude mcp add --scope user address-latest --env CRYPTOAPIS_API_KEY=your-value -- npx -y @cryptoapis-io/mcp-address-latest

    Replace “your-value” with your key before pressing Enter

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Type /mcp in Claude Code

    You should see MCP Address Latest listed as connected

  6. Try it

    Use MCP Address Latest and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using MCP Address Latest or shows a MCP Address Latest tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCP Address Latest for Cursor on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "address-latest": { "command": "npx", "args": [ "-y", "@cryptoapis-io/mcp-address-latest" ], "env": { "CRYPTOAPIS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For CRYPTOAPIS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the MCP Address Latest tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Sign up and create a MCP Address Latest key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  4. Fill in your key

    In the MCP Address Latest settings, CRYPTOAPIS_API_KEY is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in Cursor in Agent mode

  6. Try it

    Use MCP Address Latest and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using MCP Address Latest or shows a MCP Address Latest tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a MCP Address Latest key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCP Address Latest for VS Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "address-latest": { "type": "stdio", "command": "npx", "args": [ "-y", "@cryptoapis-io/mcp-address-latest" ], "env": { "CRYPTOAPIS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For CRYPTOAPIS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the MCP Address Latest tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install Node.js (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    node -v
    • A version number such as v26.13.1 = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed

    Open the Node.js download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v

    Install once; it works for everything that needs Node.js

  2. Sign up and create a MCP Address Latest key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  4. Fill in your key

    In the MCP Address Latest settings, CRYPTOAPIS_API_KEY is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in VS Code in Agent mode

  6. Try it

    Use MCP Address Latest and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using MCP Address Latest or shows a MCP Address Latest tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use MCP Address Latest💬 Discussion →
For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user address-latest --env CRYPTOAPIS_API_KEY=your-value -- npx -y @cryptoapis-io/mcp-address-latest

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "address-latest": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-address-latest"
      ],
      "env": {
        "CRYPTOAPIS_API_KEY": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "address-latest": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-address-latest"
      ],
      "env": {
        "CRYPTOAPIS_API_KEY": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "address-latest": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-address-latest"
      ],
      "env": {
        "CRYPTOAPIS_API_KEY": "your-value"
      }
    }
  }
}

Values you fill in

  • CRYPTOAPIS_API_KEY secret required env
    Crypto APIs API key

Descriptions are as written by the maker.

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

At a glance

Downloads per weeki
85/wk
Connection
Runs on your computer
Latest versioni
0.5.0
Published to registryi
Nov 13, 2026
Code last changedi
Nov 13, 2026
Maker
CryptoAPIs-io
Packages
npm: @cryptoapis-io/mcp-address-latest
Registry status
Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

All apps, with pros and cons →

Related guides

Guide 85 checks before you install an MCPAbout 2 minutes each: check its page on our site and the permission request in your AI app before you say yes.4 min read

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 16, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account CryptoAPIs-io, which owns the repo

  • ✓ Pass

    Still maintained

    Code last changed 3 days ago

  • ✓ Pass

    Has a licence

    Uses MIT

  • – 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

Published vulnerabilities (OSV.dev)

No entries on OSV.dev for @cryptoapis-io/mcp-address-latest@0.5.0

Checks only this package version, not every dependency · checked Nov 15, 2026

What we check → · JSON

Makers: ask for a re-check or report wrong info

Sign in

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

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User reviews

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Compared with others in Crypto & blockchaini

  • More stars than 84% of the other 1710 servers in this category
  • Published to the registry more recently than 94% of the other 1710 servers in this category
  • Basic checks equal to or better than 100% of the other 1710 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 Address Latest safe?

It passed 3 of 3 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: CRYPTOAPIS_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 3 days ago, and the latest version (0.5.0) reached the registry 3 days 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: DexSQL, PayRam, DexPaprika, Alchemy MCP Server, X402 List MCP

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

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

DexSQL

SQL for Android APK and DEX files: classes, methods, strings, references and smali.

by LSPosedGrowing★ 310Updated 29 days ago

Runs on your computer✓ lsposed.org
Install

PayRam

Install, configure, operate and integrate self-hosted PayRam crypto payment gateways.

by PayRamGrowing★ 158Updated 40 days ago

Runs in the cloud✓ service owner · payram.com
How to connect

DexPaprika

DEX and on-chain data: liquidity pools, token prices, swaps, and trading volume.

by coinpaprikaGrowing★ 120Updated 3 days ago

Runs in the cloud✓ service owner · dexpaprika.com
How to connect

Alchemy MCP Server

Blockchain data across 100+ chains: token prices, NFTs, transfers, simulation, traces, Solana DAS

by alchemyplatformGrowing★ 88Updated 5 days ago

Runs in the cloud✓ service owner · alchemy.com
How to connect

X402 List MCP

Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

by mcccsmEarly↓ 80/wk★ 18Updated 37 days ago

Computer or cloud✓ service owner · x402-list.com
Install
  • DexSQL — Installs on your computer · No key needed
  • PayRam — Runs in the cloud, nothing to install · No key needed
  • DexPaprika — Runs in the cloud, nothing to install · No key needed
  • Alchemy MCP Server — Runs in the cloud, nothing to install · No key needed
  • X402 List MCP — Cloud or install on your computer · No key needed

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.

@cryptoapis-io/mcp-address-latest

MCP server for Crypto APIs Address Latest product. Query recent blockchain address data (last 14 days) without requiring address sync.

API Version: Compatible with Crypto APIs version 2024-12-12

Features

  • Query EVM addresses (Ethereum, Ethereum Classic, BSC, Polygon, Avalanche (C-Chain), Arbitrum, Base, Optimism, Tron)
  • Query UTXO addresses (Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash)
  • Query Solana addresses (SOL balance, transactions, SPL tokens)
  • Query XRP/Ripple addresses (balance, transactions, sequence)
  • Query Kaspa addresses (balance, transactions)
  • Cursor-based pagination for large result sets
  • No address sync required (unlike Address History)

Prerequisites

To use this MCP server, you need:

  1. Register at Crypto APIs
  2. Generate an API key from your dashboard

Installation

npm install @cryptoapis-io/mcp-address-latest

Or install all Crypto APIs MCP servers: npm install @cryptoapis-io/mcp

Usage

# Run with API key

npx @cryptoapis-io/mcp-address-latest --api-key YOUR_API_KEY

Or use environment variable

export CRYPTOAPIS_API_KEY=YOUR_API_KEY npx @cryptoapis-io/mcp-address-latest

Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS, %APPDATA%\Claude\claude_desktop_config.json on Windows):

{

"mcpServers": { "cryptoapis-address-latest": { "command": "npx", "args": ["-y", "@cryptoapis-io/mcp-address-latest"], "env": { "CRYPTOAPIS_API_KEY": "your_api_key_here" } } } }

Cursor

Add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

{

"mcpServers": { "cryptoapis-address-latest": { "command": "npx", "args": ["-y", "@cryptoapis-io/mcp-address-latest"], "env": { "CRYPTOAPIS_API_KEY": "your_api_key_here" } } } }

MCP Inspector
npx @modelcontextprotocol/inspector npx @cryptoapis-io/mcp-address-latest --api-key YOUR_API_KEY
n8n
  1. Start the server in HTTP mode:
   npx @cryptoapis-io/mcp-address-latest --transport http --port 3000 --api-key YOUR_API_KEY
  1. In your n8n workflow, add an AI Agent node
  2. Under Tools, add an MCP Client Tool and set the URL to http://localhost:3000/mcp

n8n in Docker: localhost inside the container is not your machine. Start the server with --host 0.0.0.0 and MCP_AUTH_TOKEN set (see Exposing the server beyond localhost), use http://host.docker.internal:3000/mcp as the URL, and add an Authorization: Bearer header to the MCP Client Tool credential.

All servers default to port 3000. Use --port to assign different ports when running multiple servers.

Available Tools

evm_address_latest

Query latest EVM address data.

Actions:

ActionDescription
get-balanceGet address balance
get-next-nonceGet next available nonce. Supported: Ethereum (mainnet, sepolia), Ethereum Classic (mainnet, mordor), BSC (mainnet, testnet)
list-transactionsList address transactions
list-token-transfersList token transfers (ERC-20, ERC-721, ERC-1155)
list-internal-transactionsList internal transactions

Supported Blockchains: ethereum, ethereum-classic, binance-smart-chain, polygon, avalanche (C-Chain), arbitrum, base, optimism, tron

utxo_address_latest

Query latest UTXO address data.

Actions:

ActionDescription
get-balanceGet address balance
list-transactionsList address transactions
list-unconfirmed-transactionsList unconfirmed transactions (mempool); uses offset pagination

Supported Blockchains: bitcoin, bitcoin-cash, litecoin, dogecoin, dash, zcash

solana_address_latest

Query latest Solana address data.

Actions:

ActionDescription
get-balanceGet address SOL balance
list-transactionsList address transactions
list-tokensList SPL tokens held by address

Supported Networks: mainnet, devnet

xrp_address_latest

Query latest XRP (Ripple) address data.

Actions:

ActionDescription
get-balanceGet address XRP balance
list-transactionsList address transactions
get-next-sequenceGet next available sequence number

Supported Networks: mainnet, testnet

kaspa_address_latest

Query latest Kaspa address data.

Actions:

ActionDescription
get-balanceGet address KAS balance
list-transactionsList address transactions

Supported Networks: mainnet

Pagination

Most list endpoints use cursor-based pagination:

// Response

{ "items": [...], "limit": 10, "hasMore": true, "nextStartingAfter": "abc123" }

Use nextStartingAfter value as startingAfter parameter in the next request.

Exception: list-unconfirmed-transactions (UTXO) uses offset pagination with limit, offset, and total fields.

Configuration

For stdio transport, provide the API key at startup via CLI argument or environment variable. For HTTP transport, it can also be provided per-request via x-api-key header (see HTTP API Key Modes).

  1. Command-line argument (recommended):
   npx @cryptoapis-io/mcp-address-latest --api-key {your_api_key}
  1. Environment variable:
   export CRYPTOAPIS_API_KEY={your_api_key}
CLI Arguments
ArgumentDescription
--api-keyCrypto APIs API key
--transportTransport type: stdio (default) or http
--hostHTTP host (default: 127.0.0.1; use 0.0.0.0 to accept remote connections — requires an auth token with --api-key)
--auth-tokenBearer token callers must send (Authorization: Bearer ); prefer the MCP_AUTH_TOKEN env var
--allowed-hostsComma-separated Host header allowlist for non-loopback binds
--portHTTP port (default: 3000)
--pathHTTP path (default: /mcp)
--statelessEnable stateless mode for HTTP
HTTP API Key Modes

When using HTTP transport, the server supports two API key modes:

  • With `--api-key`: The key is used for all requests. x-api-key request headers are ignored.
  • Without `--api-key`: Each request must include an x-api-key header with a valid Crypto APIs key. This enables hosting a public server where each user provides their own key.
# Per-request key mode (multi-tenant)

npx @cryptoapis-io/mcp-address-latest --transport http --port 3000

Clients send x-api-key header with each request

Exposing the server beyond localhost

HTTP mode listens on 127.0.0.1 by default, so only processes on the same machine can reach it. To accept connections from other machines or containers, bind explicitly and protect the port:

# Startup-key mode: callers must present the token (the server refuses to start without one)

export MCP_AUTH_TOKEN=$(openssl rand -hex 32) npx @cryptoapis-io/mcp-address-latest --transport http --host 0.0.0.0 --port 3000 --api-key YOUR_API_KEY \ --allowed-hosts mcp.internal.example

Clients send: Authorization: Bearer $MCP_AUTH_TOKEN

Per-request key mode: no startup key, every request must carry the caller's own x-api-key

npx @cryptoapis-io/mcp-address-latest --transport http --host 0.0.0.0 --port 3000

--allowed-hosts restricts the Host header (DNS rebinding protection) when not bound to loopback. Prefer MCP_AUTH_TOKEN over --auth-token: command-line arguments are visible in the process list.

Stdio transport always requires an API key at startup.

Important: API Key Required

Warning: Making requests without a valid API key — or with an incorrect one — may result in your IP being banned from the Crypto APIs ecosystem. Always ensure a valid API key is configured before starting any server.

Remote MCP Server

Crypto APIs provides an official remote MCP server with all tools available via HTTP Streamable transport at https://ai.cryptoapis.io/mcp. Pass your API key via the x-api-key header — no installation required.

License

MIT