"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
WHOIS, RDAP, DNS, IP / ASN / CIDR and Web3 name (ENS, Unstoppable, Handshake) lookups. No API key.
VPN, proxy, Tor, hosting and CDN detection for any IP address, from the VPNDetection API.
External checks of TLS, HTTP headers, email domain, DNS and ports, with cause and fix
DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.
Machine-Readable Company Profiles: find, search and read any company's Trust Profile, fact by fact.
29 pay-per-call DNS, SEO, SSL, security, WHOIS, mail, and AI tools for AI agents. x402, no API key.
UniFi quotes, case studies and network, camera, access config guides from a nationwide integrator.
Secure P2P File Transfer, Encrypted Chat & Communication | Decentralized P2P & AES-256-GCM encryption | Zero cloud logs. Zero registration. For humans and autonomous AI agents / MCP servers.
Free MCP server of security & dev API tools -- supply-chain, CVE, DNS, WHOIS, OFAC, Cosmos SDK.
Official Porkbun MCP server: domains, DNS, SSL, hosting and Cloudflare via the Porkbun API.
Is it DNS? Audit a site or domain that isn't working: one call says if it resolves and why. No key.
Find the cheapest or best-value VPS for a given spec (vCPU, RAM, storage, budget, Seoul region) across 40+ providers and 300+ no-commitment monthly plans, compare providers head to head, and compare domain registration and renewal costs over 1-5 years. Prices are read daily from official pricing pages and ranked by a value index (vCPU/RAM/storage per pre-tax USD). Read-only, no auth. Data and docs: https://ssanvps.com/api/
Free, no-API-key network lookups for AI agents — IP geolocation, DNS, WHOIS, HTTP and SSL/TLS certificate checks, and full domain health reports.
Dedicated static outbound IPv4 over WireGuard. Free 7-day trial, no card, no sales call.
Maps who controls a business web presence (domain, DNS, hosting, site) and the cost of leaving.
Manage VeriTeknik servers, DNS, backups and support tickets from your AI assistant.
Official DIDWW MCP connector for managing phone numbers, inbound voice and SMS routing, and voice capacity. Review billing information, prepare data exports, and manage supported compliance workflows. Uses OAuth and existing DIDWW account permissions, with explicit confirmation for significant account changes.
An MCP server that allows an agent to find the vendor that a network interface MAC address is registered under and other information about the block like it's registered country, the registry type it is in, how many addresses are in it's block and a link with more information. Stateless MCP 2026-07-28 version support only.
Deploy and operate Kubernetes: clusters, stacks, apps, logs, metrics and security, with OAuth.
Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.
