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API Reference

The Submission API behind every Formclick form: endpoints, payloads, file uploads, webhooks and errors.

Overview

API overview Everything a Formclick form does goes through a small, public HTTP API. Use it directly from any language.Authentication Submissions are authenticated with your form’s public access key.

Endpoints

Submit endpoint The submission endpoint: URL, methods, content types, fields and responses.REST API (forms & submissions) Read and manage forms, submissions and webhooks with an OAuth access token. Powers the Formclick app on Make.File upload API Upload files directly to storage with one-time URLs, then reference them in a submission.Webhook events The JSON Formclick sends to your webhook for each new submission.

Reference

Errors Every error the endpoint can return, what causes it and how to fix it.Rate limits & quotas Per-IP limits, duplicate detection, size limits and monthly plan quotas.