Is Open Collective free to use?

Yes, Open Collective is listed as a free public API. Visit the official documentation for current rate limits and usage policies.

Does Open Collective require an API key?

No, Open Collective works without any authentication — you can call it directly.

Open Collective — Free Public API

Overview

Open Collective provides collective data — keyless (GraphQL: a bare GET returns 400 CSRF-blocked, verified).

Quick Start

Query (POST GraphQL):

curl -X POST "https://api.opencollective.com/graphql/v2" \
  -H "Content-Type: application/json" \
  -d '{"query":"{ account(slug: \"apache\") { id name } }"}'

⚠️ Gotcha (verified): without a Content-Type header the request is blocked as CSRF (400).

Notes

Collectives/contributions via GraphQL.
POST + Content-Type: application/json required.

FAQ

Is Open Collective free? Yes — free and keyless.

Why 400? The request lacked a content-type (CSRF guard, verified) — add the header.

What does it return? Collective data.

More in Social

API	Auth	HTTPS	CORS
4chan Simple image-based bulletin board dedicated to a variety of topics	No auth	Yes	Yes	↗
Ayrshare Social media APIs to post, get analytics, and manage multiple users social media accounts	API Key	Yes	Yes	↗
aztro Daily horoscope info for yesterday, today, and tomorrow	No auth	Yes	Unknown	↗
Blogger The Blogger APIs allows client applications to view and update Blogger content	OAuth	Yes	Unknown	↗
Bluesky Decentralized social networking via the AT protocol	No auth	Yes	Yes	↗