MCP servers for HTTP / API

Inbox for AI agents: one address per agent to message and share files.

Free, non-custodial tools to validate bounded USDC/USDT payout plans and reconcile payouts.

Develop, manage, and debug Railway projects, services, and deployments from within agents.

Search Japanese companies, departments and hiring signals; export CSV/XLSX with authentication.

Tennis game plans, scouting reports and match breakdowns from shot-by-shot charted matches.

Generates cryptographically random integers in a given range, using crypto/rand.

Track keyword positions over time: create trackers, check ranks, and pull history programmatically.

Finds why Google and AI cannot read your site, gives the exact fix, applies it once you approve.

Facts about Rankera, the done-for-you AI visibility service: plans, channels and site search.

Rankine to kelvin, number discarded

Checks if ChatGPT, Claude, Gemini and Perplexity can reach and read a website, with ranked fixes.

SEO MCP server — backlinks, domain authority, tech stack, and 18+ tools via Common Crawl.

Audit a site's visibility to ChatGPT, Perplexity, Claude and AI agents. Generates llms.txt.

Read-only Google Search Console, Bing, Google Analytics and privacy-friendly analytics for your AI.

AI growth engineer for software businesses: SEO pages, AI answers, Reddit replies, lifecycle email.

Web search & fetch MCP for AI agents: 12 engines, one key, flat $15/mo at ransack.tools.

Generate full songs with vocals, instrumentals and sound effects from text.

Send new pages and backlinks to Googlebot fast, then check which URLs Google has indexed.

Read rapidmail lists, recipients, mailings and stats; add, update or unsubscribe one recipient.

Check and price up to 20 domain names at once; agents can register them, paying per request.

Transcribe social videos, selected comments, URL batches and Instagram channels.