freeapis

Diagrams.so

Generate editable draw.io architecture diagrams from text or infrastructure code

Authentication
API Key
HTTPS
Yes
CORS
No
Category
Development

Overview

Diagrams.so generates draw.io architecture diagrams — key-based.

⚠️ Status (verified 2026-08): a guessed path returned HTTP 404 {"detail":"Not Found"} (FastAPI) — the route paths differ. Check the developer docs for valid routes.

What it provides

curl "https://api.diagrams.so/v1/diagrams?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"nodes":[]}'

Notes

  • Architecture diagrams (draw.io).
  • Route paths per the developer docs.

FAQ

Is Diagrams.so free? Key-based per the docs.

Why 404? Our 2026-08 guess path was wrong (verified) — check the developer docs.

What does it do? Architecture diagram generation.

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