"MCP servers that work without 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.
Pay-per-use APIs for agents: web research, data lookups, and metered endpoints billed to credits.
Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.
Technology intelligence feed for AI agents: tech stack, compliance, security.
Money, FX, capital-market and metadata-only China macro evidence with source clocks and limits.
Free, no-key AI news + AI regulation tracker MCP: EU AI Act, US federal & state, UK. Daily briefing.
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.
The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.
The only News based AI MCP your agents will ever need — custom categories, global regions, and time-scoped results in one tool. We use multi-vector & sparse-hybrid search to search through thousands of articles across the world to find the exact news you're looking for.
Google Gemini Notebook (NotebookLM): notebooks, sources, cited chat, podcasts, video, slides
Google keyword search volume, CPC, difficulty, keyword ideas and Google Trends. Pay per call (x402)
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
Public data from Douyin, Xiaohongshu, Bilibili, Weibo, TikTok and 20+ platforms as unified JSON
IBAN, ISIN, VAT/tax ID, GTIN validation; timezone, geo, text, chain utilities. Pay per call
TikTok hashtag volume over time, with growth for any hashtag. Free key at trendsmcp.ai
Steam concurrent players by game over time, monthly trends and growth. Free key at trendsmcp.ai
App Store and Play downloads and charts over time, Android uses bundle ID. Free key at trendsmcp.ai
Get automated U.S. residential home value reports with estimated value ranges and confidence, comparable sales, rent estimates, property facts, market forecasts and branded PDFs.
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.
