"A server that supports Server-Sent Events (SSE)" matching MCP connectors:
Matching Connector Tools:
Federated search of books and papers, BibTeX/RIS citations, open-access retrieval and reading.
CLSTR reads 100,000+ articles a day from 40,000+ sources in 170+ countries and deduplicates them into single events, then links related events into ongoing situations with a maintained summary and a full timeline. An agent can answer what has happened over the last six weeks, not just what a single headline says right now.
Official MCP: continuous supply-chain risk monitoring and early warning, not a one-off report. Register and create a key at https://supplygraph.ai/zk_chat_os/dashboard/dashboard.html — if you are not signed in you will be redirected to login; new users can register there. After login, open A2A / MCP and click Create Production Key or Create Sandbox Key. Send the header as Bearer <api_key> (one Bearer prefix, then the raw key). Optional for initialize and tools/list; required for tools/call.
Connect Claude or any MCP client to Thread Otter, a GTM agent for founders. Free tools with no key: find_buyer_threads (give it a website URL and get recent Reddit threads where that product's buyers are asking for it, report in ~3 minutes), reddit_demand_board (weekly demand across 40 communities with thread receipts), and subreddit_rules (promotion posture for 2,000+ profiled subreddits). With an API key: read your buying-intent mentions across Reddit, X, LinkedIn, and Bluesky, check your pipeline, and propose posts and reply drafts in your voice. Propose-only by design: nothing sends without your approval flow. Keys at threadotter.com/connect.
Check how much real depth Armasourcing's vetted Filipino virtual assistant pool has for a specific role, skills and timezone, and understand how hiring and engagement work. Returns aggregate pool statistics only, no candidate names, no profiles, and no pricing, and ends in a free discovery call booking.
Find 76,000+ curated healthcare service vendors across 25 categories and all 50 US states.
Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.
An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.
Biorhythm cycles, forecasts, critical days and compatibility for AI agents, one API key.
Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.
Read-only MCP server for live Polymarket, Kalshi, Limitless odds; Manifold sentiment.
Validate startup ideas with behavioral evidence — not opinion. Demand Discovery AI™ is a sales-agent MCP that answers founders' questions about the validation framework, the four data-signal categories (Search & attention, Conversation & pain, Adoption & spend, Capital & hiring), the Demand Score™, and the Build/Pivot/Kill verdict™. Includes 7 tools: ask a free-form question, get the validation framework, get product details, explain demand signals, compare validation approaches, get data-source
Access premium IPO intelligence through AI agents. Retrieve detailed company profiles for upcoming and recent public offerings — including deal terms, SEC filings, AI-generated research with valuation models, competitor benchmarking, underwriter ratings, risk screening, and board analysis. Monitor overall market conditions with a proprietary daily sentiment score (-100 bearish to +100 bullish) with historical trend data to help time investment entries.
ILO labour statistics (ILOSTAT) with full provenance: source URL, vintage, license. Remote or stdio.
Access the OpenAlex academic research catalog — 270M+ publications.
SupplyMaven supply chain risk management data including manufacturing, port and airport congestion, border, materials and macro indexes
Search Stack Exchange questions, fetch Q&A threads as markdown, look up tag FAQs and user profiles.