The Tally API gives developers full programmatic control over forms and submissions. Create forms on the fly, sync responses to your stack, and automate workflows, all for free. Whether you're building a client portal, an internal tool, or an automated pipeline, the API makes it possible without a single click in the UI.

<aside> <img src="/icons/gift_green.svg" alt="/icons/gift_green.svg" width="40px" /> The Tally API is available for free to all Tally users.

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API developer docs

The Tally developer docs are your key to a comprehensive understanding of the Tally API and help you start building quickly.

Introduction - Tally Developer Docs

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Want to use Tally with your AI assistant? The Tally MCP server lets you build, update, and fetch forms using natural language, no API calls required. It's the fastest way to manage Tally through AI tools like Claude, Cursor, or Claude Code.

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API reference basics

• Base URL: https://api.tally.so
• Authentication: every request needs an Authorization: Bearer <token> header. Get your API key here.
• Rate limits: 100 requests/minute. Use webhooks instead of polling to avoid hitting this.
• Versioning: the API is versioned by date. Pin a version with the tally-version header (e.g. tally-version: 2025-02-01) so future changes don't break your integration.