"Free PostgreSQL Database Solutions" matching MCP connectors:

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.

Free AI-industry intelligence for agents: briefings, regulation tracker & regional lenses

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.

Structured aquarium, marine, terrarium and paludarium data for AI agents.

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.

Eligibility-first UK & EU grant discovery, inside ChatGPT and Claude. Checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. 6 tools: search, fetch, find_opportunities, should_apply, explain_opportunity, complete_profile. Transport: Streamable HTTP. Auth: OAuth 2.1 + PKCE. Free to install, no card required.

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

LuxAlgo Library — the encyclopedia of trading & technical analysis for AI agents. Free, keyless.

Verified AI free-tier limits, quota comparisons, commercial-use verdicts and zero-cost workflows.

Stock market trading signals: regime, ranked buy list, stock + sector reads. Free tier + x402 live.

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

Find novel, statistically validated patterns in tabular data — hypothesis-free.

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

Free fundamental stock & ETF analysis: 10-point score, verdict and key metrics for any ticker.

Free MCP window into a live autonomous machine-economy experiment: telemetry, hypothesis scoreboard.

Market & supply-chain intelligence on 34 humanoid robots: scores, specs, pricing. No key.

Winning numbers for 30+ world lotteries, minutes after each draw. Free, no key, CC BY 4.0.

GIS tools for AI agents: 65 free tools + 8 paid (hazard/site-scouting/GeoJSON export)

Pay-per-call US brand evidence and signal workflows with free MCP discovery and x402 payments.

连板网A股复盘数据: 连板天梯/题材/情绪周期/龙虎榜游资/个股涨停史 (A-share daily review, free read-only)