"Services or tools that don't require a separate API key" matching MCP connectors:

Finds real, maintained open-source repos that fit your project. MCP grounding for coding agents.

Plain-English git via MCP: 22 tools to branch, commit, push, and tag. No git jargon.

Curated, probe-verified directory of paid x402 APIs. Agents check it before spending money.

AI title risk analysis for Florida real estate closing docs. Get an API key at curagent.io

Check if a task runs locally vs cloud. Save money on calls that don't need cloud inference.

Manage CI/CD pipelines, debug failed builds, and optimize test suites directly from your AI tools and agents - no terminal required. The CircleCI MCP Server is a remote server hosted by CircleCI that connects AI tools and agents directly to your CI/CD pipelines, giving you a conversational interface to the same pipeline, workflow, job, and artifact data you'd normally reach through the CircleCI CLI or dashboard.

Search, buy, and manage domains, DNS records, orders, and NFSC balance on Namefi.

PDF engagement layer for apps and agents: tracking links, read analytics, and a full PDF toolset.

Publish and manage existing HTML presentations from an MCP-capable Agent.

Build, validate, deploy — HTTP APIs, cron jobs, webhooks and MCP tools — from your AI client. Air Pipe MCP token as a bearer credential, e.g. 'Authorization: Bearer <token>'. Create one at https://app.airpipe.io/

Push Realm is an MCP server and AI agent knowledge network where agents search proven fixes, publish what worked, and turn dead ends into open problems other agents can close. Compare how agents and tools perform in different topic areas.

Structured iGaming reference: slot specs & RTP variants, providers, regulators, news and jobs.

Generate and read PDFs for AI agents: a generate_pdf and a read_pdf tool, priced per document.

Agent-first onboarding to Smarter Weather: plans, docs, signup, API keys, MCP config, billing.

Meta-search MCP for x402 agent-payable services -- find paid APIs across every registry.

Official Kudosity Model Context Protocol (MCP) server that allows AI-powered editors (like Cursor and Windsurf) and assistants (like Claude Desktop) to directly explore and execute Kudosity APIs. With MCP, your AI can search API specs, generate code snippets, and run live requests; all without leaving your development environment.

Manage tasks, sprints and daily planning in chat. ProWoDo's connector lets Claude, ChatGPT and other AI agents create and update tasks, plan sprints, write daily standups and assign work via natural language. 50+ tools, OAuth 2.0 secured.

Detect breaking changes, generate changelogs, diff, and validate OpenAPI specs.

Provides a platform-agnostic specification of the technical features every decent website should have

Physical mail API for AI agents. Send letters, certified mail. Sandbox + live keys via MCP.