StockSlash: SEC 13F, Congress & Insider Trades

by reambergmbh

281 downloads

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About

StockSlash is a hosted MCP server for institutional and political stock activity. Connect it to your AI and ask about SEC 13F filings from around 80 super investors, U.S. Congress stock trades, and corporate insider (Form 4) buying.

Details

Author: reambergmbh
Downloads: 281
Categories: Other

- 23 tools across super investors, stocks, Congress, insiders, and market filings.
- One-call bundles: analyze_investor, analyze_stock, compare_investors, get_insider_summary.
- Plain-name input – no CIK codes or ticker lookups required.
- Three smart-money signals in one place: 13F holdings, congressional trades, insider buying.
- Open and read-only – no install, no API key.
- Built on public SEC EDGAR and STOCK Act filings with clear quarter and lag.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name StockSlash: SEC 13F, Congress & Insider Trades

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

From the repository

Connect any MCP client that supports Streamable HTTP to the endpoint https://stockslash.com/mcp. Authentication is none and the server is open and read-only. Configuration examples: Claude (web/desktop) – add custom connector with the endpoint; Claude Code – claude mcp add --transport http stockslash https://stockslash.com/mcp; Cursor, ChatGPT (Developer Mode), and Codex CLI also support it. No download or key management is needed.

`get_super_investors`

Use when the user wants to browse, list, or filter the universe of tracked institutional investors (hedge funds, asset managers, family offices). Returns a compact card per fund with name, CIK, AUM, position count, latest filed quarter, trading style ("Buy & hold" / "Moderate rotation" / "High rotation"), strategy tags, and the top 3 positions with portfolio weight. **By default funds are sorted by portfolio value (largest first)** — so calls like "show me top investors" or "biggest funds" Just Work without setting any params. Pass `type: "alphabetically"` for a name-sorted list. Pass `search` to filter by name, strategy, or tag (e.g. "value", "buffett", "tech"). Pass `include_full_holdings: true` to get the original verbose top-10 with full position metadata.

`get_investor_fund_value`

Use when the user asks about a specific fund's total portfolio value (AUM). Returns the fund's latest reported portfolio value. Pass `investor` with a name or CIK — e.g. "Buffett", "Berkshire", or "0001067983".

`get_investor_fund_value_history`

Use when the user wants to see how a fund's total AUM has changed over time. Returns quarterly portfolio values and quarter-over-quarter / annual percent returns. Useful for trend questions like "how has Berkshire grown over the last 5 years?". Pass `investor` with a name or CIK.

`get_investor_current_holdings`

Use when the user asks what a specific fund owns right now or at a past quarter. Returns every stock the fund holds with shares, value, percent_of_portfolio, recent activity label (Buy/Add/Reduce/Sold/null with change percent), and quarters_held_total. Also includes manager_profile with AUM, position count, and trading style. By default omits the 6-quarter weight_history sparkline per holding — pass `include_history: true` to include it. Pass `investor` with a name or CIK.

`get_fund_activity`

Use when the user asks what an investor BOUGHT or SOLD recently (or in a specific quarter). Returns trade-level changes — new positions, increased positions, reduced positions, and exits. **Defaults to the latest quarter** (so "what did Pabrai buy recently?" Just Works with no quarter param). Pass `quarter` for a specific past quarter. Pass `include_all_quarters: true` for the full multi-quarter history. Pass `investor` with a name or CIK.

`get_fund_distribution`

Use when the user asks about a fund's trading cadence or whether the manager is a buy-and-hold investor or active trader. Returns counts and dollar values of new positions, adds, reduces, and exits per quarter across the fund's history. Pass `investor` with a name or CIK.

`get_stock_holders`

Use when the user asks who owns a specific stock — i.e. which institutional funds hold it. Returns a summary (funds_holding count, average and max portfolio weight, biggest holder) plus the top N holders sorted by portfolio weight with shares, value, weight percent, and recent activity. Pass `stock` with a ticker or company name. NOT for insider trades — use get_insider_trades for those.

`get_stock_activity`

Use when the user asks which funds are buying or selling a specific stock. Returns trading activity for the stock across all tracked funds in a given quarter. Pass `stock` with a ticker or company name.

`get_ownership_statistics`

Use when the user asks about institutional ownership of a specific stock — what percentage is held by institutions, how concentrated, how it changed quarter over quarter. Pass `stock` with a ticker or company name.

`get_insider_trades`

Use when the user asks about insider activity for a stock — Form 4 disclosures from company executives, directors, and large shareholders. Returns recent buys and sells with names, titles, share counts, prices, and dates. NOT for institutional funds — use get_stock_holders for those. Pass `stock` with a ticker or company name.

`get_sp_stocks_by_holders`

Use when the user asks which S&P 500 stocks are most popular with institutions — ranked by number of holders. Returns symbol, issuer, holder count, percent-of-universe, max single-fund weight, and total dollar value held. Default top 25 (use `limit` for more). Set `include_all_fields: true` for the original verbose payload.

`get_latest_filings_updates`

Use when the user asks what 13F filings just arrived. Returns the most recent submissions with fund name, filing date, and quarter. Useful for "what's new?" or "did Buffett file yet?" questions.

`get_filings_buy_status`

Returns the stocks bought by the most tracked funds in a given quarter, ranked by the count of funds buying or adding, with total dollar volume per stock. Use to answer 'which stocks did most institutional funds buy this quarter?'. Pass `quarter` for a specific quarter (defaults to latest).

`get_filings_sell_status`

Returns the stocks sold by the most tracked funds in a given quarter, ranked by the count of funds selling or trimming, with total dollar volume per stock. Use to answer 'which stocks did most institutional funds sell this quarter?'. Pass `quarter` for a specific quarter (defaults to latest).

`get_ownership_statistics_home`

Use when the user asks for an overall snapshot of institutional activity — the homepage view. Returns: top stocks by institutional ownership percentage, by total value held, by holder count, plus the most-bought and most-sold stocks this quarter.

`get_latest_quarter`

Use when the user (or another tool) needs to know which quarter has the most recent 13F data available. Returns the quarter string (e.g. "Q1-2026"), filer counts, and total unique holdings tracked. Useful as a first sanity check.

`analyze_investor`

Use when the user wants a comprehensive profile of one investor — "tell me about Buffett", "what is Pabrai doing?", "how is Berkshire performing?". One call replaces 3-4 separate tool calls. Returns: identity (name, manager, tags, strategy), profile (AUM, positions, trading style, turnover), AUM history (last 8 quarters), top 10 current holdings with weight and recent activity, and the trading distribution across quarters. Pass `investor` with a name or CIK.

`analyze_stock`

Use when the user wants a comprehensive view of one stock's institutional picture — "tell me about Apple", "is anyone smart buying Tesla?". One call replaces 3-4 separate tool calls. Returns: institutional ownership summary, top 10 institutional holders, recent buying and selling activity, and recent insider trades summary. Pass `stock` with a ticker or company name.

`compare_investors`

Use when the user asks to compare two investors — "Buffett vs Pabrai", "Berkshire vs Pershing Square", "how does Burry differ from Ackman?". Returns side-by-side profiles (AUM, positions, style, turnover), overlap (positions both hold with each fund's weight), positions unique to each, and divergent moves (one added, the other reduced). Pass `investor_a` and `investor_b` — both accept names or CIKs.

`get_insider_summary`

Use when the user asks about insider sentiment or aggregate insider activity for a stock — "are insiders bullish on Tesla?", "what are AAPL execs doing?", "net insider flow at NVDA last 90 days?". Returns aggregated counts and dollar values of buys vs sells over a configurable window (default 90 days), with a sentiment label and top buyers/sellers. Lighter alternative to raw Form 4 dumps. Pass `stock` with a ticker or company name.

`get_congress_trades`

Use when the user asks what members of the U.S. Congress are trading — e.g. "what is Nancy Pelosi buying?", "congress trades in NVDA". Returns recent STOCK Act disclosures with member name, party, chamber, ticker, buy/sell, disclosed amount range, and filing delay. Filter by `member_name` (partial match) or `ticker`.

`get_top_insider_stocks`

Use when the user asks which stocks insiders are buying — especially stocks the super investors already own ("where are insiders and smart money both buying?"). Returns stocks ranked by insider (Form 4) open-market buying over a window, with buy count, unique buyers, C-suite buys, and total dollar value. `scope` defaults to "superinvestor" (only stocks tracked funds hold); pass "all" for the whole market.

`get_congress_consensus`

Use when the user asks which stocks multiple members of Congress are buying — a consensus signal ("what are several congresspeople buying?"). Returns tickers bought by at least `min_members` distinct members in the window, with member count, buys/sells, and the member names.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "stockslash: sec 13f, congress & insider trades": {
            "stockslash": {
                "type": "http",
                "url": "https://stockslash.com/mcp"
            }
        }
    }
}

McpServers

{
    "stockslash": {
        "type": "http",
        "url": "https://stockslash.com/mcp"
    }
}

Overview

Hosted MCP server for SEC 13F filings, U.S. Congress stock trades, and insider buying. Ask by plain name. No install, no API key.

What is StockSlash?

StockSlash is a hosted MCP server that gives your AI access to institutional and political stock activity:

- SEC 13F filings from around 80 super investors (hedge funds, asset managers, family offices)
- U.S. Congress stock trades disclosed under the STOCK Act
- Corporate insider buying from SEC Form 4

Ask about any fund, stock, or member of Congress by plain name. No CIK codes or ticker lookups needed.

How to use StockSlash?

Endpoint: https://stockslash.com/mcp
Transport: Streamable HTTP. Authentication: none (open, read only). Rate limit: 200 requests per 15 minutes per IP.

It runs remotely, so there is nothing to install and no API key to manage.

- Claude (web and desktop): Settings, then Connectors, then Add custom connector, and paste the endpoint.
- Claude Code: claude mcp add --transport http stockslash https://stockslash.com/mcp
- Cursor: add an http server with the endpoint URL.
- ChatGPT (Developer Mode): create an app, set the MCP Server URL to the endpoint, authentication None.
- Codex CLI: codex mcp add stockslash --url https://stockslash.com/mcp

Key features

- 23 tools across super investors, stocks, Congress, insiders, and market-wide filings.
- One-call bundles that summarize a fund or stock in a single request: analyze_investor, analyze_stock, compare_investors, get_insider_summary.
- Plain-name input: pass Buffett, Apple, or Pelosi instead of codes.
- Three smart-money signals in one place: 13F holdings, congressional trades, and insider buying.
- Open and read only: no install, no API key.
- Built on public SEC EDGAR and STOCK Act filings, with the quarter and 45-day lag always clear.

What you can query

- Investors: analyze_investor, get_super_investors, compare_investors
- Stocks: analyze_stock, get_stock_holders, get_ownership_statistics
- Congress: get_congress_trades, get_congress_consensus
- Insiders: get_insider_summary, get_top_insider_stocks
- Market: get_filings_buy_status, get_latest_filings_updates

Use cases

- Research what well-known investors are buying and selling each quarter.
- Track Congress stock trades by member or by ticker.
- Check insider buying sentiment alongside your other analysis.
- Find consensus moves, such as stocks bought by many funds or several members of Congress.
- Power AI assistants that answer stock-ownership questions with structured, citable data.

FAQ

Which data sources does StockSlash use?
SEC EDGAR 13F-HR filings, SEC Form 4 insider trades, and public congressional STOCK Act disclosures.

Do I need an API key?
No. The server is open and read only, rate limited to 200 requests per 15 minutes per IP.

How current is the data?
13F filings are lagged up to 45 days from quarter end, so holdings reflect the reported quarter, not today. Insider and congressional filings appear after their own disclosure windows.

Which clients work with StockSlash?
Any client that runs the MCP protocol over Streamable HTTP: Claude, Claude Code, Cursor, ChatGPT (Developer Mode), and Codex CLI.

Is StockSlash investment advice?
No. It is a data and analysis tool. See https://stockslash.com/imprint.

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About

Details

Jump to

Setting up with Highlight

From the repository

get_super_investors

get_investor_fund_value

get_investor_fund_value_history

get_investor_current_holdings

get_fund_activity

get_fund_distribution

get_stock_holders

get_stock_activity

get_ownership_statistics

get_insider_trades

get_sp_stocks_by_holders

get_latest_filings_updates

get_filings_buy_status

get_filings_sell_status

get_ownership_statistics_home

get_latest_quarter

analyze_investor

analyze_stock

compare_investors

get_insider_summary

get_congress_trades

get_top_insider_stocks

get_congress_consensus

Claude Desktop / Cursor

McpServers

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`get_super_investors`

`get_investor_fund_value`

`get_investor_fund_value_history`

`get_investor_current_holdings`

`get_fund_activity`

`get_fund_distribution`

`get_stock_holders`

`get_stock_activity`

`get_ownership_statistics`

`get_insider_trades`

`get_sp_stocks_by_holders`

`get_latest_filings_updates`

`get_filings_buy_status`

`get_filings_sell_status`

`get_ownership_statistics_home`

`get_latest_quarter`

`analyze_investor`

`analyze_stock`

`compare_investors`

`get_insider_summary`

`get_congress_trades`

`get_top_insider_stocks`

`get_congress_consensus`