"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Pay-per-use APIs for agents: web research, data lookups, and metered endpoints billed to credits.
Spot keyword demand rising or fading. Trend volume and growth signals. Free key at trendsmcp.ai
Measured share of answer for 20 SaaS brands. An open dataset, not an audit of your site.
Ask about your own Meta (Facebook and Instagram) ad account right in Claude, ChatGPT or Cursor. Run1Ads checks your ads, Pixel and store every hour and tells you the one fix that matters today, ranked by buyers lost, with exact steps. It advises only and never changes your ads. Free for a limited time.
Podcast database for guest booking, PR, sponsorship research and podcast marketing: 3M+ podcasts and 100M+ episodes from public RSS feeds, Apple Podcasts, Spotify and YouTube, with the guests and sponsors of recent episodes. Search shows by category, language, audience size (Apple and Spotify ratings, social followers, YouTube subscribers, chart positions), guests, sponsors, publishing rhythm and whether a contact email is on file. Find the podcasts a person has been a guest on or a brand sponsors, search episodes that mention a brand, product or person and read their full show notes, check today's Apple Podcasts and Spotify charts by country and category, read Apple Podcasts reviews and find shows similar to one you like. Get contact emails for the shows you want to reach and save shows to your Grep.FM lists to review and export. Remote MCP server with OAuth for Claude, ChatGPT, Cursor, Codex and other MCP clients. Requires a Grep.FM Pro or Team plan.
Analyze and score leads to identify high-potential prospects and prioritize sales outreach.
Analyze Product performance on Platforms like youtube, instagram etc. To optimize Marketing.
20 blogging, brand-voice, copywriting, video and social skill products. 6 of 8 free.
7 outreach, sequencing, call-coaching and CRM-hygiene skill products. 6 of 8 free.
Cite42 gives AI agents AI visibility, citations, SEO keywords and trends, plus four weekly or monthly trackers: AI Visibility, AI Competitors, AI Citations and AI Sentiment. Use it over MCP from Claude, Codex or Cursor, or via the REST API. $1 free on signup, no subscription. Learn more at https://www.cite42.dev
Server-side conversion tracking for Meta, TikTok, etc. Set up tracking and ask about events.
Forecast product demand using historical sales and market signals.
Email infrastructure for AI agents. Connect your coding agent and it sets up email in your app: create templates, segments, workflows and webhooks, send test emails and read back what was delivered, track events, and create agent inboxes. Sign in with OAuth or use a Volanea API key. Test keys render and log but never deliver. 1,000 emails free every month.
AI search visibility: where ChatGPT, Perplexity, Gemini and Google AI cite you. OAuth sign-in.
Free SEO and AI search readiness audit for any public site: score out of 100, platform detection, fixes per CMS. Email unlocks the full report.
Turn one prompt into a live landing page and leads in your CRM. AXL MCP lets your AI agent build pages, capture leads, manage contacts, book calls, run email campaigns, and deliver courses. Open-source agent skill. Powered by AXL, a hosted SaaS platform. - **Skill and demo:** https://github.com/axlhq/business-stack - **Install the skill:** `npx skills add axlhq/business-stack` - **Connect MCP:** https://app.axl.tech/mcp — sign in to your AXL account in the browser (OAuth 2.1). Installation and connection are separate steps. **First run — paste this into your agent:** > Using AXL, build a landing page for my [offer] with a name-and-email form that saves each signup to the CRM. Show me a preview and ask before publishing. After I approve, publish it and give me the public and admin links. I will submit a test signup; then find that contact in the CRM and confirm the form answers were saved. - **MCP setup:** https://axl.tech/developers/mcp - **Documentation:** https://docs.axl.tech/mcp - **Product overview (77 seconds):** https://www.youtube.com/watch?v=jlhR9CafIww
AI UGC videos of your store's products: read a product, write 3 scripts, make the video.
Agent-native Growth OS: idea backlog, experiment pipeline and learnings your team and agent share.
Free AI visibility check: can AI crawlers read a site, and do ChatGPT, Gemini, Perplexity cite it?
Free, no sign-in: checks a website's readiness for AI search and lists what it found.
