Capitalsnitch MCP server

• Registry namecom.capitalsnitch/insider-tradingverified in the MCP registry

The registry name sits under capitalsnitch.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-29
• Tools27
• Server calls itselfcapitalsnitch
• Server version0.3.0
• Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 223 ms.

• Its tools do every use case we checked: find which executives bought their own company's stock recently; review congressional trades in a given stock.
• Checked on 4 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 4 so far
• What an agent can do with it2 of 2 use cases
• Answeredmeasuring4 of the 7 daily checks it takes to print a share
• Median first answer247 ms
• Space in an agent's context≈ 6,506 tokensthe definitions of all its tools (27), which an agent carries on every turn
• Tool definitionsA · 99 of 100
• Typed results27 of 27 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 2 of 27

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• get_insider_activity

  List and summarize insider trades (SEC Form 4) for one company: who bought or sold, when, how much, their role (CEO, CFO, Director, 10% owner…), and a link to each filing. Use for questions like 'are insiders buying or selling NVDA?' or…

• find_insider_buying

  Scan ALL U.S. companies for insider open-market PURCHASES — the strongest insider signal. Ranks companies by total value bought, number of distinct insiders buying ('cluster buying'), or recency. Use for 'which insiders are buying right…

• get_insider_signal

  Score current insider behavior for one company (0–100, 50 = neutral) and EXPLAIN it: open-market buying vs selling, how unusual it is versus the company's own 5-year history, cluster buying, and C-suite participation, with the evidence…

• get_insider_person

  Find an insider (executive, director, or large holder) by name and list their open-market trades across all companies, with totals. Use for 'what has Warren Buffett bought recently?' or 'Jensen Huang stock sales'.

• search_companies

  Look up tickers and official company names (with SEC CIK) from recent insider filings. Use when the user names a company but not its ticker, or a ticker returns no results.

• get_data_status

  Report what data CapitalSnitch covers, how fresh it is, update schedule, sources, and known limitations. Use when asked 'how current is this?', 'what data do you have?', or before making time-sensitive claims.

• get_market_context

  Current U.S. market backdrop in one call: market regime (calm uptrend / uptrend under stress / downtrend / panic / recovery, from the S&P 500 trend and VIX), VIX level and percentile, Fed funds rate, 2y and 10y Treasury yields…

• get_company_context

  Everything that matters about one company in one call: the explained insider signal (score, cluster and C-suite buying, unusual vs history) PLUS the next earnings date and countdown (and last earnings), the stock's volatility regime (calm…

• get_financials

  A company's fundamentals from its SEC filings (10-Q/10-K): market cap, P/E, price/sales, dividend yield, 12-month revenue and net income with year-over-year growth (growing / flat / declining, accelerating or slowing), margins, free cash…

• get_dilution_history

  Every stock offering, at-the-market (ATM) program, convertible note (including private Rule 144A deals announced only in an 8-K), notes exchanged for shares, unregistered share sale and shelf registration the company filed with the SEC…

• find_insider_clusters

  Find every company where several different insiders made OPEN-MARKET purchases (option exercises, awards and sales excluded), list each buyer's name, title and amount, and FLAG BATCHES: many buyers filing on the same day with similar…

• find_emerging_insider_buying

  Spot insider buying EARLY: companies where fewer than 5 different insiders bought in the window but the pace is rising (more buyers or more dollars recently than earlier), versus 'crowded' companies where 5+ insiders already bought…

• get_institutional_ownership

  Who owns a stock, from SEC Form 13F filings by investment managers (hedge funds, mutual funds, banks, pensions with $100M+): number of institutional holders, share of the company they hold, top holders with their stake and…

• get_fund_holdings

  A fund's latest SEC Form 13F portfolio: total value, number of positions, top holdings with % of portfolio, and what changed vs the quarter before: new positions, positions sold out, biggest adds and biggest cuts. Use for 'what did…

• get_congress_trades

  Stock trades reported by members of the U.S. House and Senate (STOCK Act Periodic Transaction Reports): member, party, state, chamber, stock, purchase or sale, amount range, trade date, filing date, how many days late it was reported…

• get_earnings_calendar

  Companies reporting earnings soon, with the date, time (before open / after close) and countdown, joined with recent insider activity. With only_with_insider_buying=true it answers 'which companies reporting soon have insiders been…

• get_daily_brief

  Ready-made daily briefing: market backdrop and next Fed meeting odds, insiders who bought ahead of upcoming earnings, the biggest insider purchases this week, CEO/CFO purchases, and cluster buying. Use for 'give me today's briefing'…

• manage_watchlist

  The user's CapitalSnitch watchlist (Edge plan, up to 25 tickers). Watchlist companies get INSTANT EMAIL ALERTS (insider buys, big insider sales, new stock offerings; ~30 minutes after the SEC filing) and lead the daily email briefing. Use…

• set_alert_preferences

  Turn the user's CapitalSnitch email alerts on or off (Edge plan): instant watchlist alerts, market-wide 'big insider moves' alerts, and the daily briefing email. Omit a setting to leave it unchanged; call with no settings to see the…

• get_my_alerts

  The alert and daily-briefing emails CapitalSnitch sent the user recently, newest first (Edge plan). Use for 'what alerts did I get today?', 'did anything trigger on my watchlist?'. Never counts toward the daily limit.

• about_capitalsnitch

  Facts about CapitalSnitch itself: what it is (a live commercial service, not a demo), every plan with price, daily limit and features, which data each plan includes, payment methods, how to sign up (right here in the chat or on the…

• get_my_account

  The user's own CapitalSnitch account: plan (Free / Scout / Analyst / Edge), whether it is active, renewing, cancelled or expired, the date it renews or ends and days left, payment method type, questions used today vs the daily limit…

• get_account_link

  Create a private, single-use link that signs the user straight into the right CapitalSnitch page — checkout (card or crypto) to upgrade or renew, or their account page to cancel, change email settings or make a new connection address…

• start_signup

  Create a CapitalSnitch account — or sign back in and get a new connection address — entirely from the chat, no website needed. Step 1 of 2: emails the user a 6-digit code. Then ask the user for the code and call confirm_signup(email…

• confirm_signup

  Step 2 of 2: checks the emailed code, creates the account (or signs in), and returns the user's personal connection address plus — for a paid plan — the payment step (a secure card link, or exact crypto payment details). The plan…

• buy_plan

  Upgrade, renew or switch the signed-in user's plan without the website. Card: returns a secure Square payment link (or, for an active card subscriber, switches the plan right away). Crypto: returns the exact amount, coin, network and…

• check_payment

  Has the payment arrived and is the plan active? For crypto, pass order_id: shows waiting / seen on the network / confirmed. For card, omit it: shows the account's current plan. Free to call.