> For the complete documentation index, see [llms.txt](https://docs.feathery.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.feathery.io/develop.md).

# Developers

- [React SDK](https://docs.feathery.io/develop/react.md): @feathery/react is a React library that allows you to embed Feathery forms, access form state, and modify form behavior.
- [API Guide](https://docs.feathery.io/develop/react/api-guide.md): @feathery/react's API guide
- [init()](https://docs.feathery.io/develop/react/api-guide/init.md): Async function that initializes Feathery
- [\<Form>](https://docs.feathery.io/develop/react/api-guide/form.md): React component that renders a Feathery form
- [contextRef](https://docs.feathery.io/develop/react/api-guide/form/contextref.md): ref object that can be used to access the context of a form
- [Event Handlers](https://docs.feathery.io/develop/react/api-guide/form/event-handlers.md): Pass event handlers as props to the \<Form> component to get access to the form at specific interaction points, including submission, errors, and more.
- [onSubmit()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onsubmit.md): This event handler runs when a step of the form is submitted.
- [onLoad()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onload.md): This event handler runs when a step of the form is loaded.
- [onChange()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onchange.md): This event handler runs when a field value is changed.
- [onAction()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onaction.md): This event handler runs when any form action is triggered.
- [onError()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onerror.md): This event handler runs when the form runs into a validation error.
- [onFormComplete()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onformcomplete.md): This event handler runs when a user completes the entire form.
- [onView()](https://docs.feathery.io/develop/react/api-guide/form/event-handlers/onview.md): This event handler runs when a specific element becomes visible on the page.
- [Custom JSX Components](https://docs.feathery.io/develop/react/api-guide/form/custom-jsx-components.md): Embed custom JSX components into your Feathery form.
- [PopupOptions](https://docs.feathery.io/develop/react/api-guide/form/popupoptions.md): Configure your form to display above the rest of your site as a popup.
- [initialLoader](https://docs.feathery.io/develop/react/api-guide/form/initialloader.md): Options for a loader while your form initializes
- [getFieldValues()](https://docs.feathery.io/develop/react/api-guide/getfieldvalues.md): Function that fetches all of the field values of the current user of your form.
- [setFieldValues()](https://docs.feathery.io/develop/react/api-guide/setfieldvalues.md): setFieldValues allows you to set custom values for the current user of your form on specific form and hidden fields.
- [updateUserId()](https://docs.feathery.io/develop/react/api-guide/updateuserid.md): Change to a new user in your Feathery session or update the existing user's ID
- [Login API](https://docs.feathery.io/develop/react/api-guide/login-api.md): @feathery/react's login API guide
- [\<LoginForm>](https://docs.feathery.io/develop/react/api-guide/login-api/login-form.md): Similar to the \<Form> component but optimized to easily introduce login, signup, and onboarding functionality into your custom app.
- [useAuthClient()](https://docs.feathery.io/develop/react/api-guide/login-api/useauthclient.md): A React hook that returns the auth library corresponding to your chosen auth integration.
- [Inline vs Popup Form](https://docs.feathery.io/develop/react/inline-vs-popup-form.md): Your Feathery form can be shown inline with the rest of the document or above the rest of the document as a popup.
- [Javascript SDK](https://docs.feathery.io/develop/javascript.md): Feathery's Javascript library allows you to embed Feathery forms, access form state, and modify form behavior.
- [Context API](https://docs.feathery.io/develop/context-api.md): Common API functionality across advanced logic, event handlers, and the context ref.
- [Field Object](https://docs.feathery.io/develop/context-api/field-object.md)
- [field.setStyles()](https://docs.feathery.io/develop/context-api/field.setstyles.md): The API for setting field styles
- [Deprecated Context API](https://docs.feathery.io/develop/context-api/deprecated-context-api.md): Context functions that have been deprecated and will be fully removed in a future SDK release
- [MCP Server](https://docs.feathery.io/develop/mcp-server.md): Connect AI assistants like Claude and ChatGPT to Feathery to work with your forms, submissions, document extractions, meetings, and more.
- [Connect to the MCP Server](https://docs.feathery.io/develop/mcp-server/connect-to-the-mcp-server.md): Connect Claude, ChatGPT, Claude Code, Cursor, VS Code, Codex, and other AI tools to Feathery by signing in with your Feathery account or using an API key.
- [Supported Tools](https://docs.feathery.io/develop/mcp-server/supported-tools.md): Every tool Feathery MCP gives your AI assistant, what each one does, and which ones change data.
- [Security, Limits and Troubleshooting](https://docs.feathery.io/develop/mcp-server/security-limits-and-troubleshooting.md): How Feathery MCP access works, how to keep API keys safe, and how to fix common connection issues.


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