Best Forms & Surveys APIs for AI Agents in 2026
Browse the top Forms & Surveys APIs used by developers worldwide. Below: the top 6 Forms & Surveys APIs by CLIRank score, the independent rubric for how well an API actually works with AI coding agents like Claude Code and Cursor.
Conversational form builder API for creating and managing interactive forms.
Best for: Best-looking forms - conversational UI that gets higher completion rates
Free form builder with an API for submissions, webhooks, and integrations.
Best for: Generous free tier - unlimited forms and submissions
Open-source survey platform with in-app surveys, links, and website surveys.
Best for: Open source - self-host with full control
npm install @formbricks/apiSurvey platform API for creating surveys, collecting responses, and analysing data.
Best for: Most recognised survey brand - respondents trust it
Online form builder API with submissions, payments, and conditional logic.
Best for: Most form features for the price - payment collection built in
Google's form creation and response management API within Workspace.
Best for: Completely free with no limits
npm install googleapisFrequently asked questions
What makes an Forms & Surveys API "agent-friendly"?
For AI coding agents, the highest-impact signals are: an official SDK on npm or PyPI, environment variable authentication (no browser OAuth flow), JSON responses that parse cleanly, machine-readable pricing, and reasonable rate limits for scripted use. APIs missing more than two of these are painful for agents to use reliably.
How do you score Forms & Surveys APIs?
Each API is rated on 8 signals worth 1-2 points each (11 raw, normalised to 10). The full rubric: official SDK (+2), env var auth (+2), headless compatible (+2), CLI tool (+1), JSON response (+1), curl/CLI docs examples (+1), reasonable rate limits (+1), machine-readable pricing (+1). The top-scoring API in this category right now is Typeform at null/10.
Why isn't [my favourite API] on this list?
This list shows the top 6 Forms & Surveys APIs by score. The full ranking includes 6 APIs in this category. If yours is missing entirely, submit it at clirank.dev/submit - it gets auto-scored and added if it clears the threshold.
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