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Crypto Link Check

Registre officiel Finance et paiements

Check crypto links for phishing lookalikes of wallets, exchanges and dapps before wallet connect

Code source Site web Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http crypto-link-check 'https://crypto-link-check.nextill-pos.workers.dev/mcp'
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "crypto-link-check": {
            "type": "http",
            "url": "https://crypto-link-check.nextill-pos.workers.dev/mcp"
        }
    }
}
NPM package devx-link-check
Claude Code 
claude mcp add crypto-link-check -- npx -y devx-link-check@1.0.0 mcp
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "crypto-link-check": {
            "command": "npx",
            "args": [
                "-y",
                "devx-link-check@1.0.0",
                "mcp"
            ]
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. Crypto Link Check
  2. CLI
  3. MCP
  4. HTTP API
  5. Official-domain list
  6. Layout
  7. Guide

Is that MetaMask / Phantom / Ledger / exchange link real? Check it before you (or your agent) connect a wallet or sign anything.

October 2026 alone brought fake Phantom, Jupiter and Bitget browser extensions, a hijacked NGRAVE push alert that sent users to a seed-phrase page, and exchange phishing mails. AI agents can now trade from exchange accounts and pay for things on their own, so they click links too. This tool gives them (and you) a quick, read-only second opinion.

  • Free, offline: CLI and MCP server that compare a link with the official domains of ~60 wallets, exchanges and dapps and flag lookalike characters (0/o, rn/m, Cyrillic), typosquats, punycode, free hosting and bait words like "claim" or "sync".
  • Free API + remote MCP: https://crypto-link-check.nextill-pos.workers.dev
  • Paid full check (optional, 0.005 USDC via x402 on Base): adds domain registration age (RDAP), DNS, redirect tracing and one fetch of the page scanned for seed-phrase prompts and token-approval drainer code. 1-10 URLs per call.

It never asks for keys or seed phrases. Verdicts are heuristics, not guarantees.

CLI

npx devx-link-check phantorn.app metamask.io
# verdict: dangerous  phantorn.app
#   [danger] phantorn.app spells the official phantom.app with lookalike characters ...
# verdict: official  metamask.io

Exit code: 0 official / no red flags, 2 caution / suspicious / dangerous, 1 error. --json for machine output.

MCP

Local (stdio), runs offline:

{ "mcpServers": { "crypto-link-check": { "command": "npx", "args": ["-y", "devx-link-check", "mcp"] } } }

Remote (streamable HTTP, no key): https://crypto-link-check.nextill-pos.workers.dev/mcp

Tools: check_crypto_link(url) and full_report_info().

HTTP API

RoutePriceWhat
GET /api/basic?url=...freelexical verdict + findings
GET /v1/check?url=...&url=...0.005 USDC (x402 v2 exact, eip155:8453)full check, 1-10 URLs
GET /brands.jsonfreethe official-domain list we use
GET /openapi.json, /.well-known/x402.jsonfreediscovery

The paid route answers 402 with a PAYMENT-REQUIRED header; any x402 client can pay. Settlement happens only after the report is produced. Humans can pay from a browser wallet on the web page. Terms: /terms.

Verdicts: official, no_red_flags, caution, suspicious, dangerous. Same-name-different-TLD domains are only caution because the brand may own them.

Official-domain list

cli/src/brands.js. It is curated by hand and incomplete. PRs that add brands or official domains (with a source) are welcome.

Layout

  • cli/: npm package devx-link-check (CLI + stdio MCP)
  • worker/: the Cloudflare Worker behind the hosted API

MIT. Made by DevX. Contact madebydevx@gmail.com.

Guide

Questions fréquentes

Qu'est-ce que Crypto Link Check ?

Check crypto links for phishing lookalikes of wallets, exchanges and dapps before wallet connect

Comment installer Crypto Link Check ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http crypto-link-check 'https://crypto-link-check.nextill-pos.workers.dev/mcp'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour Crypto Link Check ?

Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.

Crypto Link Check est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient Crypto Link Check ?

Il est publié par devx-agent. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.