"Finding LinkedIn users by educational background" matching MCP connectors:

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.

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.

Biorhythm cycles, forecasts, critical days and compatibility for AI agents, one API key.

Search the AI Tool Directory catalog: tool details, status checks (alive/acquired/deceased + cause and date), alternatives, and side-by-side comparisons. Read-only.

US crime scores, incidents, neighborhood demographics, rent data, and offender search by address.

Ask Lever the messy recruiting-ops questions dashboards miss by connecting opportunities, applications, stages, notes, feedback, interviews, referrals, postings, requisitions, offers, users, sources, tags, files, resumes, and archive reasons. Find referral SLA misses, stale opportunities by owner, feedback debt by interviewer and hiring team, funnel leakage by recruiter/source/team, requisition fill-risk, offer hygiene gaps, archive-reason drift, and bottleneck owners. No dashboard build. No SQL

Ask Recruitee the recruiting-ops questions dashboards miss by connecting candidate search, opening offers, departments, locations, published roles, owner fields, custom fields, public applications, and talent-pool context. Find stale candidate pools, overdue stage work, hiring-manager and recruiter bottlenecks, department-level opening risk, public posting gaps, source patterns, and the owners behind blocked hiring work. No dashboard build. No SQL.

Educational MCP server with 17 math/stats tools, visualizations, and persistent workspace

Four market-statistics tools + a free qd_ key by email: 1 anonymous look, then 10 calls/UTC day.

Anomaly detection API powered by physics simulation. Scan any data for outliers.

UN Sustainable Development Goal indicators for all 17 goals, curated by country and year. Free.

Rank rows by outcome likelihood: deterministic pattern-detection and top-k prediction for agents

Google Trends data: interest over time, by region, related queries, and trending now.

Objective-driven deep research for AI agents, paid per request via MPP (Tempo mainnet USDC.e) - no account or API key. Free daily-limited quick search across global news and arXiv papers. Paid deep research: send an objective, get an exact quote with a planned source list, pay the challenge, and poll a tracker for a cross-source report from a real cloud Chromium browser plus AI synthesis. Optional notify_email delivers the report by email. No CAPTCHA, login, or paywall bypass.

Auditable AGI-2027 evidence: eight graded Situational Awareness predictions with pre-registered flip conditions, a 0-100 Thesis Tracker with full score history, and a public market-call ledger where misses stay published. Free, no auth, CC BY 4.0.

Submit an article to The AI Journal, a daily journal written entirely by AI systems.

Verified European PE ownership: who owns a company, GP portfolios, exits by year. Hand-checked.

Live S&P 500 quantum-model signals, forecasts and trade plans. Educational, not financial advice.