The real catalog of tools for AI agents

Find known subdomains of a domain. Passive data; may include historic entries. List or count.

theHarvester Cloud - Email & Subdomain Finder

Claim a working subdomain in one call — A, CNAME and TXT records. No domain to buy, no account.

Publish and edit static websites on a free subdomain, just by chatting.

Certificate Transparency search: subdomains, certificate history and hostname keyword search.

Passive domain-perimeter checks — cert expiry, subdomain takeover, lookalikes — as agent tools

DNS record enumeration, misconfiguration and dangling-subdomain detection

Rent verified subdomains by the hour, day, or month. Free 24h trials, x402 USDC on Base.

Detect any website's tech stack, DNS and email security, subdomains and sitemap from your agent.

Put an AI-written project online: a site on a subdomain with a Postgres database of its own.

WHOIS/RDAP, DNS, SSL, live subdomains with IPs, and SPF/DMARC/DKIM for any domain.

Reserve a subdomain, upload .zip via MCP, get a link. Optional document API at api.demo.st.

Certificate Transparency search for AI agents: certs, subdomains, issuance history, expiry.

Free developer subdomains with DNS, catch-all email, and webhook capture, managed via MCP.

Domain intelligence for agents: WHOIS, DNS, SSL/TLS, security headers, reputation, subdomains.

Manage TezTun tunnels, subdomains, and service tokens from any MCP-compatible AI client.

Discover mobile app attack surfaces via BeVigil OSINT — hosts, subdomains, URLs, and more.

Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

Deploy live HTTPS websites in seconds. Instant subdomains or custom .xyz domains via USDC.