AI Form API changelog: what v0 includes

Updated 2026-10-30

Version 0 is the first release, from 2026-10-30. It covers creating forms, reading responses and agent fill. This page lists what v0 has. It lists what is coming soon. It lists what we chose not to build.

v0

Released on 2026-10-30.

Added

  • REST API at https://aiformapi.com/v1. Create, read, update, close, reopen and delete forms. See Quickstart.
  • 11 field types: short_text, long_text, email, number, url, phone, single_choice, multi_choice, checkbox, date and rating. Up to 50 fields per form. See Forms and fields.
  • Blocked fields. Forms that ask for passwords, PINs, card numbers, IBANs, passport numbers, national ID numbers and similar secrets are rejected with blocked_field.
  • Responses as JSON or CSV, with since, limit and cursor paging. See Responses.
  • Agent fill. A public form page offers a copy-and-paste prompt. Path A is for agents with tools. Path B is for plain chats and lets the person paste the agent's JSON back. See Agent fill.
  • Fill API: GET and POST /v1/fill/{token}. See Fill API.
  • Creator MCP server at /mcp with an API key header. Works in Claude Code, Cursor, VS Code, Claude Desktop through mcp-remote, and n8n. See MCP.
  • Fill MCP server at /mcp/fill, with no login. Add it as a custom connector in Claude.ai and ChatGPT.
  • Webhooks with a signed X-AIFormAPI-Signature header. See Webhooks.
  • Embed script: embed.js. See Embed.
  • agent-fill.js: a script that adds the agent hand-off (Path B) to any HTML form on any site, with no API and no network request. See agent-fill.js.
  • Dashboard with magic-link sign-in: forms, a form builder, a responses table, CSV download, share link, embed code, webhooks and usage.
  • Rate limit headers on every limited response. See Rate limits and quotas.
  • OpenAPI 3.1 at /openapi.json.
  • Free plan: 3 open forms, 100 responses a month, 30 requests a minute and 1,000 a day for each API key.

Coming soon

  • OAuth for the creator MCP server, so it can be added in Claude.ai and ChatGPT connectors.
  • A Pro plan with higher limits, at $19 a month. It is not on sale yet and there is no billing. See Pricing.
  • Google Sheets sync. See Form to Google Sheets. No date.
  • Native Excel (.xlsx) export. See Form to Excel. No date.

Not in v0

  • Payments, file uploads, conditional logic and e-signatures.
  • Importing old responses from other tools.
  • Redirect after submit on the free plan.