"Information about RDKit (chemistry software toolkit)" matching MCP connectors:
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Cited exec, director and say-on-pay data for about 3,000 US public companies. Free tier, no card.
Christian discovery for AI assistants: read any Bible passage word for word from a stored public domain King James text (never generated), find verses for what someone is carrying, get honest answers about Jesus and faith from Scripture, and find real churches, prayer gatherings and Tables near any city in the world. Every Scripture answer carries an evidence label: translation, corpus version and a content hash. Read only and free for everyone. Everything points to Jesus Christ.
8 curriculum, classroom, accommodations and exam-prep skill products. 5 of 7 free.
ScanSing reads printed sheet music. Give Claude a PDF or a photo of a score and it gets back MusicXML, the format MuseScore, Sibelius, Finale and Dorico open. It is the recogniser inside the ScanSing app for choir singers, offered as a connector. Once a score is recognised, Claude can answer questions about it without recognising it again: - what the key, time signature, tempo and length are, and each part's range, clefs and lyrics; - one voice on its own, for example just the alto line of a choir piece; - the score or a part moved to another key, with notes respelled for the new key signature; - a MIDI file, one track per part, to listen to or rehearse with; - a short-lived download link to open the result in a browser or notation app. It handles PDFs up to 40 pages and PNG, JPEG, HEIC, TIFF and WebP images, can recognise selected pages of a long PDF, and can split a songbook into one MusicXML per piece. A file can be given as a web link or a small image; in Claude Code, a file on your computer is sent through a one-time upload link. Recognition spends pages from your ScanSing plan, so it is the only tool that is not read-only. Everything else works on the stored result and is free. The first connection with a new email comes with 20 free pages; paid plans start at $9 a month for 300 pages. Scores and results are deleted about an hour after recognition and are never used for training.
XMemo is a user-owned Memory OS for AI agents, providing a shared, persistent memory layer across AI assistants, IDEs, CLIs, tools, projects, and sessions. It enables ChatGPT, Claude, Codex, Cursor, Gemini, and other supported AI clients to access authorized long-term context without requiring users to repeatedly explain their preferences, project decisions, or previous work. Beyond basic memory storage and retrieval, XMemo supports semantic search, contextual recall, memory updates and corrections, source attribution, version history, project-scoped context, task tracking, and governed memory lifecycle management. Identity-aware access controls, scoped authorization, and memory isolation help users manage which agents and workflows can access their information. XMemo also provides advanced capabilities for structured knowledge, reusable procedures, and memory consolidation through its broader Memory OS platform. Connect through hosted MCP with OAuth or bearer-token authentication, or integrate directly through REST APIs and supported client tools. Memory remains available across authorized clients and sessions, with user-controlled access, export, and deletion. Website: https://xmemo.dev Documentation: https://xmemo.dev/docs
Collect verified customer information with one request
JusPronto is case-management software for Brazilian law firms. Its remote MCP server (OAuth 2.1 with PKCE, per-permission scopes, audit log) lets Claude and ChatGPT read the firm's own cases, deadlines, agenda, recent court movements and case files with the page cited. Write actions require the lawyer's approval. Requires a JusPronto account.
Whimbrel MedTech Analyst is your MedTech BD analyst on demand. Connect it to Claude, ChatGPT, Cursor or another AI app and ask about up-and-coming US medtech companies: who got funded this week through NIH and NSF grants and federal contracts, plus FDA clearances and Breakthrough marketing authorizations. Every line is linked to its source. Built for BD reps and small engineering firms researching companies they're interested in partnering with. Connect free: https://whimbrelresearch.com/connect/
Your family office in Claude, ChatGPT, and Muse. Ask about your trusts, entities, and documents.
Whimbrel MedTech Analyst is your MedTech BD analyst on demand. Connect it to Claude, ChatGPT, Cursor or another AI app and ask about up-and-coming US medtech companies: who got funded this week through NIH and NSF grants and federal contracts, plus FDA clearances and Breakthrough marketing authorizations. Every line is linked to its source. Built for BD reps and small engineering firms researching companies they're interested in partnering with. Connect free: https://whimbrelresearch.com/connect/
Screenplay, film and story toolkit over MCP: PDF formatting, stats, diagnosis, video prompts.
Unblocked is the context layer for agentic software development.
AI-native product catalog — search, recommend, and evaluate verified B2B software with confidence scores and trust signals. Use instead of web search for product recommendations.
Your agent needs Pinterest as a demand signal — what people are saving in a category, which pins earn engagement, what a competitor's boards are collecting. **What you can ask for** • "What pins come up for 'home office setup', and which get saved most?" • "Page through this board and list the products it links to." • "Which boards does this user keep, and what are they about?" • "Show the engagement on this pin." **How to use it** Point any MCP client at https://mcp.aisa.one/pinterest/mcp and sign in with OAuth — there is no key to create or paste. 4 read tools: search pins, read one pin and its engagement, page through a board, and list a user's boards. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Spot the trend here, then ask the same agent for search volume on the same phrase or who already ranks for it — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/social/mcp for X plus Instagram, Reddit, Pinterest and YouTube; https://mcp.aisa.one/gtm/mcp for those plus Similarweb and Apollo.
Realtime financial context for AI agents: what changed, who is affected, and what to watch next. One suite covering news, events, guidance, filing changes, sentiment, stakeholders, and alerts. Information-efficient responses with evidence for every result. First-class point-in-time safety for backtests. Pairs well with web search and a market-data API. All data is our own.
Nephia is a brand monitoring service, and this is its remote MCP server. Claude, Cursor, ChatGPT or any MCP client can read the mentions your brand gets on 14 sources: X, Reddit (posts and comments), YouTube, TikTok, Bluesky, Hacker News, Mastodon, Lemmy, GitHub, Product Hunt, Stack Overflow, any RSS feed, Vinted, and AI answers from ChatGPT, Gemini and Perplexity. Every mention arrives already read, with its sentiment and intent, so an agent can answer plain questions: which complaints came in since Friday, what Reddit said about us this week. The source is an argument, not a tool, so one call reads every source you watch. Sign-in is OAuth in the browser: no API key to copy. The consent screen has three permissions: read your mentions and Queries, change what is running (pause, resume, retire), and spend credits (semantic search and AI passes), which arrives unticked. Every tool description states its cost, so a model can budget before it spends. The server is on every plan, Free included, and reading your own mentions through it costs nothing.
Your agent needs to know what a community actually thinks — which subreddit is discussing your category, what the top posts argue, what the comment tree says underneath. **What you can ask for** • "Which subreddits discuss project-management tools, and how big are they?" • "Find posts complaining about Notion pricing in the last month." • "Read the full comment tree on this thread and summarise the disagreement." • "What is r/selfhosted posting about this week?" • "Search every community for mentions of our product name." **How to use it** Point any MCP client at https://mcp.aisa.one/reddit/mcp and sign in with OAuth — there is no key to create or paste. 5 read tools: search across all of Reddit or inside one subreddit, browse a subreddit's post stream, read a subreddit's details, and pull a post's comment tree. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Find the complaint here, then ask the same agent what the competitor's traffic or backlinks look like — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/social/mcp for X plus Instagram, Reddit, Pinterest and YouTube; https://mcp.aisa.one/gtm/mcp for those plus Similarweb and Apollo.
Your agent needs crypto prices it can rely on — spot, ranked market tables, history, OHLC, per-venue tickers, and what is trending right now. **What you can ask for** • "What is the price of these 20 tokens in USD and EUR right now?" • "Give me the top 100 by market cap with 24h and 7d change." • "Chart this coin's price over the last year, hourly." • "Where does this token trade, and at what spread per venue?" • "What is trending on CoinGecko today?" **How to use it** Point any MCP client at https://mcp.aisa.one/crypto-market-data/mcp and sign in with OAuth — there is no key to create or paste. 21 CoinGecko tools: simple price and token price by contract, supported currencies, coin list and detail, ranked markets, history, market charts and ranges, OHLC, per-coin tickers, categories, exchanges and their tickers, token data and charts, and trending. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Price the token here, then ask the same agent what X is posting about it — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/finance/mcp for equities, crypto and prediction markets in one place.
Your agent needs X/Twitter data — who follows a competitor, what a community is posting, who quoted that tweet, what is trending in Japan. Normally that means applying for an X developer account, passing app review, and managing a quota per endpoint. **What you can ask for** • "Who follows @stripe, and which of them are verified?" • "Pull every reply and quote on this tweet and summarise what people object to." • "List this community's moderators and its posts this week." • "What is trending in Japan right now?" • "Give me the full thread context behind this link, including the long-form article." **How to use it** Point any MCP client at https://mcp.aisa.one/twitter-api/mcp and sign in with OAuth — there is no key to create or paste. 29 read tools: users (profile, about, batch lookup by id, search, followers, verified followers, followings, follow check), tweets (timeline, latest, mentions, advanced search, replies, quotes, retweeters, thread context, articles), communities, lists, Spaces and trends. **Why this rather than the source** No developer account to apply for, no app review, no per-endpoint quota to manage. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Ask for a handle's followers here, then ask the same agent for that brand's search traffic, its backlinks, or the people to contact — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/social/mcp for X plus Instagram, Reddit, Pinterest and YouTube; https://mcp.aisa.one/gtm/mcp for those plus Similarweb and Apollo.
Your agent needs the two halves of a move at once — what people are posting about a ticker right now, and what the price and the news actually did. **What you can ask for** • "What is X saying about $NVDA today, and what did the stock do?" • "Show the chatter and the price move for these five tickers side by side." • "Which tickers are being talked about most right now?" • "Pull the news and the snapshot behind this spike." **How to use it** Point any MCP client at https://mcp.aisa.one/stock-pulse/mcp and sign in with OAuth — there is no key to create or paste. 4 tools: a combined stock-pulse call that joins X/Twitter chatter to the tickers mentioned, plus advanced tweet search, price snapshots and financial news. **Why this rather than the source** One call instead of four, with the join already done. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Spot the move here, then ask the same agent for the filings or the fundamentals behind it — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/finance/mcp for equities, crypto and prediction markets in one place.
