"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Global stock and UCITS ETF research. Free: 700 successful MCP tool calls per rolling 30 days. Pro: CHF 5/month or CHF 50/year for higher usage. Screen stocks, compare fund costs and holdings, and inspect company risks. No account or API key for public research. Plans: https://bull-run.org/pricing. Connect your Bullrun account through OAuth to use Pro.
The free 9-part video course, Explore The Coin Daily Research, walks through setup and the full workflow — charts, comparisons, news and using the tools in ChatGPT or Claude: https://www.youtube.com/playlist?list=PLKY7CRxbV8Fc Ask your assistant for a chart and it arrives in the conversation — scrub Bitcoin's week, set an A-to-B range, and see the move in numbers. Pull funding, open interest, liquidations and order-book depth. Catch hourly regime shifts. Compare whole sectors, like DeFi against AI tokens. Follow source-linked news and ticker video coverage, or read the latest published Market Update with its chapters. Every figure is grounded in The Coin Daily's own research pipeline: widgets render exactly what was read, missing readings stay visible gaps, and nothing is invented. Editorial market commentary — not investment advice. No trading, wallets or payments, ever. Sign in with OAuth.
Pay-per-use APIs for agents: web research, data lookups, and metered endpoints billed to credits.
Gold Coast & Brisbane: the building, the street at its door and the everyday context around it.
Twitter (X) trends over time, with growth for any keyword. Free key at trendsmcp.ai
Wikipedia page views over time, with growth for any article topic. Free key at trendsmcp.ai
Steam concurrent players by game over time, monthly trends and growth. Free key at trendsmcp.ai
Technology intelligence feed for AI agents: tech stack, compliance, security.
AiSeek is a global change-intelligence platform that connects AI assistants and autonomous agents to structured, source-linked information about developments across the world. Rather than providing a conventional news feed, AiSeek focuses on identifying meaningful changes, preserving their context, and making the underlying sources accessible. What a source says (fact) is kept apart from what it may mean (hypothesis). Coverage spans artificial intelligence, technology, global economics, financial markets, companies, government policy, science, and other major domains. The MCP server provides sixteen read-only tools. Every name follows one pattern: list_, get_, search_ or verify_. Changes and context: • list_changes — Browse the newest published changes, newest first, 20 per page. • search_changes — Search changes by words in English, Chinese or Japanese, ranked by relevance. • get_change — One change with its sources: outlet, link, date, evidence level and role. • list_topics — Browse curated topics, optionally by coverage domain. • get_topic — One topic and up to 50 of its recent changes. • get_latest_brief — The latest daily or weekly brief. • list_scheduled_events — Upcoming central-bank decisions, data releases, earnings, rule dates and more. Companies: • search_companies — Find a company by name, alias or ticker. • get_company — A company's profile, listings, recent changes, stated facts and relations. Countries and SeekEarth: • list_countries — Every country with its name and this week's number of changes. • get_country_heat — Change Heat per country against its own normal, with a seven-day series. • get_earth_view — One place and moment on SeekEarth: changes, heat and the Earth's layers. Evidence (SeekTrace): • get_change_history — A change's evidence receipts and what AiSeek knew at an earlier time. • get_receipt — One evidence receipt. • verify_receipt — Check that a stored receipt is unchanged. • list_corrections — Public corrections, newest first. Tool calls need an AiSeek API key (Authorization: Bearer or the x-api-key header), made at aiseek.dev/en/account; the handshake and the tool list are open. Optional connection defaults go on the endpoint URL: ?locale=en|zh|ja&limit=1-50&domain=MARKETS. Answers carry sources and links, never quoted passages.
Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.
App Store and Play downloads and charts over time, Android uses bundle ID. Free key at trendsmcp.ai
Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.
Measured share of answer for 20 SaaS brands. An open dataset, not an audit of your site.
Federated search of books and papers, BibTeX/RIS citations, open-access retrieval and reading.
TikTok hashtag volume over time, with growth for any hashtag. Free key at trendsmcp.ai
Money, FX, capital-market and metadata-only China macro evidence with source clocks and limits.
Banco Central do Brasil (BCB): SGS series, Focus expectations, PTAX, stats + provenance. 17 tools.
Neutral, verification-gated MCP directory of Japan construction contractors (KIRA-audited).
Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth. 4 of 7 free.
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.
