I Built a Tool That Turns Any OpenAPI Spec Into n8n Workflow Nodes in Seconds

Published: 1 week ago (January 9, 2026 at 05:18 AM EST)

2 min read

Source: Dev.to

Source: Dev.to

The Pain Points

Every API endpoint means a new HTTP Request node to configure manually.
Copy‑pasting URLs, headers, and parameters is tedious and error‑prone.
Complex APIs with dozens of endpoints can take hours of clicking.
OpenAPI specs contain all the needed information, but n8n can’t read them directly.
One typo in the endpoint path and the workflow breaks silently.

Paste an OpenAPI spec and get ready‑to‑use n8n nodes instantly.

Paste your OpenAPI/Swagger spec – provide a URL, upload a file, or paste raw JSON/YAML.
Select the endpoints you need – cherry‑pick only the ones you’ll use.
Copy → Paste into n8n – one click copies the node configuration, ready to drop into your workflow.

That’s minutes of manual work compressed into seconds.

URL fetching – point to any public OpenAPI spec URL.
File upload – drop your local spec files.
Direct paste – copy‑paste spec content directly.
Popular APIs – pre‑configured examples (GitHub, Stripe, Slack, Discord, etc.).

Feature	Description
Multi‑format support	OpenAPI 3.x & Swagger 2.0, JSON & YAML
Selective conversion	Pick specific endpoints, skip the rest
Base URL override	Point to staging, production, or localhost
Browser persistence	Conversions are saved automatically
Multi‑tab workflow	Manage multiple API conversions at once
One‑click copy	Clipboard‑ready n8n node configurations
Zero friction	Browser‑based, no install, no account required
Spec as source of truth	Uses existing OpenAPI documentation
Selective imports	Avoid bloating your workflow
Time savings	What took 30 minutes now takes ~30 seconds

How do you currently handle integrating complex APIs into n8n? Feel free to share any endpoints or specs that break the converter—PRs are welcome!