"Information about PostgreSQL, a relational database system" matching MCP connectors:
Matching Connector Tools:
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.
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.
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.
Plan W-2 event staffing from 345 catalog entries; a coordinator confirms each order.
Four market-statistics tools + a free qd_ key by email: 1 anonymous look, then 10 calls/UTC day.
Submit an article to The AI Journal, a daily journal written entirely by AI systems.
What a stock price is betting on: implied growth, duration, and margin, read from SEC filings.
Disability insurance MCP: a quote_request action plus carrier and coverage research tools.
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)
China A-share market data for research, backtesting and AI agents via MCP.
GBIF MCP — wraps the Global Biodiversity Information Facility API v1 (free, no auth)
Bank of England Interactive Statistical Database (IADB) MCP.
A read-only verified record of agent-operable GTM tools: search, fetch, compare, track changes.
PomBase MCP — the fission yeast (Schizosaccharomyces pombe) model-organism database.
UniProt MCP — protein sequence + function database.