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Form4API — SEC Insider Trading

Research SEC insider filings, Form 144 notices, 13F-HR holdings, and U.S. House trades through MCP tools.

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Install Form4API — SEC Insider Trading

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "form4api-sec-insider-trading": {
      "command": "npx",
      "args": [
        "-y",
        "form4api-mcp"
      ],
      "env": {
        "FORM4API_KEY": "YOUR_VALUE_HERE"
      }
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Values are written into the snippet above so you can paste it as is. They never leave your browser.

Automated check passed— started and listed 39 tools correctly (Today).

Overview

Form4API — SEC Insider Trading MCP server connects MCP-compatible clients to the hosted Form4API REST API for SEC filing and market-participant research. It provides tools for resolving companies and insiders, querying Form 4 transactions, examining Form 144 and 13F-HR data, and analyzing congressional trades and convergence signals. Use it when an agent needs structured insider, institutional, or congressional trading data without manually browsing filings. The server runs through npx over standard MCP configuration and requires a Form4API API key for the main tools.

Use cases

  • Search insider purchases for a company
  • Review Form 4 filings by ticker or date
  • Compare insider activity with institutional holdings
  • Find U.S. House trades for a ticker
  • Investigate clustered insider buying

Key features

  • Form 4 transaction search and filing lookup
  • Form 144 proposed-sale data
  • 13F-HR institutional holdings
  • 10b5-1-aware signals and sentiment
  • Congressional trade and convergence analysis
  • API usage and data-quality tools

Tools39

What Form4API — SEC Insider Trading lets your agent do. Expand a tool for its parameters.

Verified live~15.2k tokens of context

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 1d ago

Recent health check succeeded.

8/8 checks healthy over the last 50d

What it can do

From the 39 tools this server returned when we ran it; 39 declare their own safety hints.

Handles credentials · 10Makes network requests · 39Read-only tools · 39
Network at startup3 connections
Files written at startupNone
Install scriptsNone
npm provenanceNot published
Package age162 days
Maintainers1

Observed 2026-10-28 in an isolated sandbox. A description of reach, not a security audit.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 12d ago via OSV.dev · form4api-mcp (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars2Stargazers on the source repository.
npm downloads1.9kPackage downloads in the last 30 days.
Last commit13d agoMost recent push to the default branch.
Availability100%Our rolling endpoint + install checks that succeeded.
Install checkPassedOur sandbox started it and listed its tools.
Tools exposed39Callable tools this server registers over MCP.

How Form4API — SEC Insider Trading works

What Form4API — SEC Insider Trading MCP server does

Form4API — SEC Insider Trading MCP server exposes hosted Form4API data to MCP-compatible AI clients. Its coverage includes SEC Form 4 insider filings, proposed-sale notices on Form 144, institutional holdings from Form 13F-HR, and congressional STOCK Act disclosures. The available tools support both individual lookups and broader research workflows.

A typical investigation can begin with search, which resolves a company, ticker fragment, or person to a ticker or CIK. From there, an agent can inspect a company, list its insiders, retrieve filings, or query transactions by date, transaction code, trade category, value, or other supported filters.

How it works

The package starts as a local MCP process and forwards tool requests to the Form4API REST API. research_company combines company details, recent transactions, cluster signals, sentiment, and a buy/sell direction summary in one request. Other tools separate these concerns for more controlled workflows, including get_signals, get_sentiment, get_holdings, and explain_signal.

The transaction and signal tools distinguish scheduled 10b5-1 activity from discretionary trades where documented. Cluster signals and sentiment exclude 10b5-1 trades. get_convergence_signals combines insider cluster purchases with congressional purchases within a trailing window; its strength value is an arithmetic count-based measure, not a predictive score.

Setup and configuration

Install and run the server with npx:

bash
FORM4API_KEY=YOUR_API_KEY npx form4api-mcp

For MCP clients, configure the server with the npx command, the -y form4api-mcp arguments, and the FORM4API_KEY environment variable. After changing configuration, restart the client so the tools are loaded.

The API key is obtained from the Form4API dashboard. Plan restrictions can cause sections of the bundled company research response to be unavailable.

Tools and capabilities

  • Resolve companies and insiders, then retrieve profiles and filing histories.
  • Search, paginate, and inspect Form 4 filings and insider transactions.
  • Review insider career summaries, scorecards, leaderboards, cluster activity, and sentiment.
  • Query Form 144 notices, institutional managers, and 13F-HR positions.
  • Inspect U.S. House congressional trades, politician activity, ticker rollups, and convergence signals.
  • Check API usage, key activity, usage history, and public data-quality metrics.

Limitations and notes

Congressional trade coverage is limited to the U.S. House. Senate electronic filing traffic is blocked for the service, so Senate filters return no matches and include a coverage note. Congressional transaction amounts remain disclosed ranges rather than fabricated midpoint values, and disclosure timing can lag the underlying trade by up to 45 days under the STOCK Act.

Some tools and filters depend on the API plan. Form4API — SEC Insider Trading MCP server should therefore be treated as a structured research interface, not as a source of guaranteed predictions or investment outcomes.

Read the full README View source on GitHub

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Frequently Asked Questions about Form4API — SEC Insider Trading

Form4API — SEC Insider Trading is an MCP server that connects AI clients to the hosted Form4API REST API. Its main tools search SEC Form 4 filings and transactions, inspect Form 144 notices and 13F-HR holdings, analyze insider signals, and retrieve U.S. House congressional trading disclosures.

Install it with npx by running `FORM4API_KEY=YOUR_API_KEY npx form4api-mcp`. For an MCP client, add an `npx` server entry with `-y form4api-mcp` and set `FORM4API_KEY` in the environment, then restart the client.

Form4API — SEC Insider Trading works with Claude Desktop, Claude Code, Cursor, Windsurf, VS Code, Codex CLI, and other MCP-compatible clients. The README provides configuration examples for each of those named clients.

Yes, it includes U.S. House congressional STOCK Act disclosures. The tools can filter trades by ticker, politician, party, chamber, state, transaction type, amount, or date, but Senate coverage is unavailable because Senate electronic filing traffic is blocked.

Yes, cluster signals and sentiment exclude 10b5-1 trades automatically. Transaction searches can still filter or inspect plan trades, while the documented signal tools are intended to reflect discretionary insider activity.

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