"How to check Bitcoin (BTC) balance" matching MCP servers:

Exposes any stdio-based MCP server over the MCP Streamable HTTP transport so remote clients can reach it, spawning an isolated child process per session and gating access behind a secret URL path.

Enables AI agents to perform compensating-control lifecycle operations on Check Point firewalls, including adding access rules, publishing sessions, and installing policies.

Enables AI assistants to bulk-check hundreds of brainstormed domain names in a single call, reporting which are available, taken, or reserved along with buy links and prices from multiple registrars. It runs locally via DNS, RDAP, and WHOIS lookups, with optional registrar API keys for confirming availability and premium pricing.

An MCP server that lets an AI assistant manage your Keenetic router in plain language — list connected devices, pin static DHCP leases, rename devices, check WAN status, and reboot.

Enables agents to run SEO and AI-search readiness audits (llms.txt, crawler access, sitemaps, structured data, redirects, indexability, and more), look up startup revenue listings and leaderboards, and check a domain's SPF, DKIM, DMARC, and MX records with concrete fixes. Runs locally over stdio with no account or API key, and frames all third-party responses as untrusted data.

Enables LLM agents to read 3x-ui panel data and perform full CRUD operations on inbounds and clients.

Read-only access to a local Hiberden backup catalog: list projects, archives, tapes, and jobs, check 3-2-1 coverage, and verify a stored copy by reading it back and re-hashing it. Runs against the catalog on your own machine, so nothing leaves it.

An MCP server that gives an AI agent safe, high-level control over Namecheap domains – availability checks, registration, DNS, email forwarding, transfers, WhoisGuard privacy, and account balance via Namecheap's XML API. Designed for safe LLM interaction with built-in confirmation gates and read-modify-write DNS operations.

An MCP server that lets Claude monitor and manage a TrueNAS box in plain English. It is deliberately read-only, providing tools to check alerts, storage pools, snapshots, services, and more.

Enables AI agents to check industrial and IT devices by vendor, product, and firmware version, returning affecting CVEs, fixes, vendor advisories, fix plans, and change tracking through read-only tools.

Enables Claude to run safe, read-only diagnostics against servers and websites — certificate chains and expiry, HTTP status/redirects/security headers, DNS records, email authentication (SPF, DKIM, DMARC, MTA-STS, TLS-RPT) and sitemaps. Every check returns severity-tagged findings with concrete fixes, plus a 0-100 score and A-F grade, without any ability to modify the target.

Enables AI assistants to perform network diagnostics by exposing ping and traceroute as callable MCP tools, allowing them to check host connectivity and trace network paths.

Enables AI assistants to check domain availability in real-time during brand naming conversations, using DNS and WHOIS queries to suggest available domains for brainstormed names.

Provides DNS lookup and email authentication diagnostic tools (SPF, DKIM, DMARC, MX, etc.) for use with MCP-compatible clients. Enables natural language queries to check DNS records and email health.

Check whether a URL is allowed under a network-egress policy before any fetch, with tools for single URL, batch checks, and policy validation.

Enables engineers to estimate LLM costs, check GPU VRAM fit, audit MCP configs for security risks, and analyze network device config changes and compliance—all locally, with no account or telemetry.

Provides read-only network engineering analysis by parsing configs and logs to explain config changes, check CIS/PCI compliance, diagnose 802.1X issues, find embedded certificates, infer topology, and assess proposed changes before pushing them.

MCP server for email deliverability: validate SPF/DKIM/DMARC/BIMI, check blacklists, test SMTP/IMAP, look up DNS, and generate ready-to-deploy records for any major email provider. Ships with two one-click prompts (audit-deliverability, setup-dns). Public, no auth.

A simple MCP server providing ping, echo, and TCP host health-check tools with latency measurement. It enables transport testing and real network connectivity checks through natural language.

MCP server for controlling Mullvad VPN through Claude Desktop, Cursor, Windsurf, and any MCP-compatible client. Connect, disconnect, switch locations, check for leaks, manage settings — all via natural language.

Enables AI assistants to check Proxy302 account usage, browse countries, regions and plans, obtain rotating residential proxy URLs, list dynamic proxies and static IPs, and fetch web pages through a chosen country's exit. It is read-only and spend-free, handing proxy credentials to browsers or Playwright for JavaScript-heavy sites.

Integrates Aliyun domain API to allow AI assistants to check domain availability, query domain details, list domains, and create registration orders.

Official Porkbun MCP server, maintained by Porkbun. Check availability and pricing, register, renew and transfer domains, and manage DNS, nameservers, URL forwarding, glue, DNSSEC, DNS restore points, static hosting, webhooks and Cloudflare-connected domains. Hosted at mcp.porkbun.com/mcp with Porkbun sign-in (no API key), or run locally with npx @porkbunllc/mcp-server. Docs: porkbun.com/mcp

Enables MCP clients to manage INWX domains through the DomRobot JSON-RPC API, including domain listing and inspection, availability and price checks, transfers, nameserver changes, contact handles, and INWX-hosted DNS zones.

Provides tools to classify, test, and expand IPv4/IPv6 addresses using Node's built-in net module.

MCP server (Python, official MCP SDK, stdio) in the mcp/ folder: tools scan_tls and scan_tls_raw check whether a website negotiates post-quantum TLS (X25519MLKEM768 / ML-KEM) and report the key-exchange group, certificate and grade.

Enables AI agents to check domain availability, get name suggestions, lock price quotes, and prepare registrations through the ThatMgmt domain reseller API without touching a dashboard.

Enables any MCP client to look up CVE intelligence — severity summaries, filtered searches, and full per-CVE detail fusing NVD, MITRE-CNA pre-NVD, CISA KEV, EPSS, and GitHub GHSA data — alongside a Shodan-derived internet-exposure footprint showing how many internet-facing services run a version mapping to a given CVE. It is free, keyless, and read-only, and distinguishes verified zeros from unassessed or failed lookups.

Lets AI agents and assistants check domains or links for safety before opening them, returning verdicts, risk scores, advice, and DNS resolution details through DNS-over-HTTPS.

14 utility tools via the PublicSoftTools API: QR code generation, PDF compress/merge/split/convert/unlock, cryptographic hashing (MD5/SHA-1/SHA-256/SHA-512), UUID generation, base64 encode/decode, secure password generation, IP geolocation, DNS records, SSL certificate check, and WHOIS lookup. Free tier: 1,500 calls/month.