# Chadwin

Chadwin provides SEC filing data for apps, websites, and agents through an API, Node.js SDK, and MCP server.

Current documentation covers annual reports on Forms 10-K, 20-F, and 40-F; insider ownership and transaction filings on Forms 3, 4, and 5; Form 144 proposed-sale notices; and Form 13F institutional holdings. Use the API reference or OpenAPI document for exact paths, parameters, and response schemas.

## Start here

- [Guides](https://www.chadwin.co/docs): Overview of datasets and integration options
- [API reference](https://www.chadwin.co/docs/api): Human-readable reference for API paths, parameters, schemas, and examples
- [OpenAPI document](https://api.chadwin.co/openapi.json): Machine-readable API contract

## Dataset guides

- [Annual reports](https://www.chadwin.co/docs/annual-reports): Understand Forms 10-K, 20-F, and 40-F
- [Insider filings](https://www.chadwin.co/docs/insider-filings): Understand Forms 3, 4, and 5, insider transactions, and Form 144 proposed-sale notices
- [Institutional holdings](https://www.chadwin.co/docs/institutional-holdings): Understand Form 13F filings, holdings, notices, amendments, and disclosure limits

## Integration guides

- [MCP](https://www.chadwin.co/docs/mcp): Connect ChatGPT, Claude Code, and other compatible tools to Chadwin
- [Node.js SDK](https://www.chadwin.co/docs/nodejs-sdk): Install and use the supported Node.js client
- [Filing and transaction feeds](https://www.chadwin.co/docs/feeds): Build and recover cursor-based polling consumers

## Optional

- [Home Page](https://www.chadwin.co/): Overview of services, pricing, use cases and more
- [Business](https://www.chadwin.co/business): Financial data for websites, applications, and agent workflows
- [Personal](https://www.chadwin.co/personal): Financial data for personal research and agent workflows
- [Sign in](https://www.chadwin.co/sign-in): Sign in to an existing account
- [Create an account](https://www.chadwin.co/sign-up): Create a new account
- [Blog](https://www.chadwin.co/blog): Product notes and research updates
- [Frequently asked questions](https://www.chadwin.co/faq): Answers to common questions
- [Contact](https://www.chadwin.co/contact): Contact support
- [Legal](https://www.chadwin.co/legal): Overview of public policies and service terms
- [Terms](https://www.chadwin.co/terms): Terms governing access and use
- [Privacy](https://www.chadwin.co/privacy): How Chadwin processes personal data
- [Cookies](https://www.chadwin.co/cookies): Cookies and analytics technologies used by Chadwin