On returning to the app with an expired Supabase access token, bootstrap requests fired with the stale token and 401'd before Supabase finished refreshing. The global 401 handler then hard-redirected to /login?from=… (a full window.location navigation), and once the refresh landed the app sent the user straight back in — the login/logout/login flicker. Two holes in the SaaS apiClient response interceptor caused it: 1. "public" endpoints (e.g. /api/v1/config/app-config) skipped the refresh-and-retry path. The backend 401s any expired Bearer token regardless of route, so those bootstrap calls 401'd and fell through to handleHttpError, which redirected to /login. Now public endpoints also refresh-and-retry, and a 401 on a public endpoint sets skipAuthRedirect so it can never trigger the global login redirect. 2. Concurrent 401s each called supabase.auth.refreshSession() independently. Supabase rotates the refresh token on first use, so the racing refreshes failed with "Invalid Refresh Token: Already Used" and bounced the app even though the session was recoverable. Refreshes are now de-duplicated through a single in-flight promise. Existing apiClient unit tests (refresh-and-retry on protected 401, bare /login redirect on genuine refresh failure) are preserved. Co-Authored-By: Claude Opus 4.8 <[email protected]>
Stirling PDF - The Open-Source PDF Platform
Stirling PDF is a powerful, open-source PDF editing platform. Run it as a personal desktop app, in the browser, or deploy it on your own servers with a private API. Edit, sign, redact, convert, and automate PDFs without sending documents to external services.
Key Capabilities
- Everywhere you work - Desktop client, browser UI, and self-hosted server with a private API.
- 50+ PDF tools - Edit, merge, split, sign, redact, convert, OCR, compress, and more.
- Automation & workflows - No-code pipelines direct in UI with APIs to process millions of PDFs.
- Enterprise‑grade - SSO, auditing, and flexible on‑prem deployments.
- Developer platform - REST APIs available for nearly all tools to integrate into your existing systems.
- Global UI - Interface available in 40+ languages.
For a full feature list, see the docs: https://docs.stirlingpdf.com
Quick Start
docker run -p 8080:8080 docker.stirlingpdf.com/stirlingtools/stirling-pdf
Then open: http://localhost:8080
For full installation options (including desktop and Kubernetes), see our Documentation Guide.
Resources
Support
- Community Discord
- Bug Reports: Github issues
Contributing
We welcome contributions! Please see CONTRIBUTING.md for guidelines.
This project uses Task as a unified command runner for all build, dev, and test commands. Run task install to get started, or see the Developer Guide for full details.
For adding translations, see the Translation Guide.
License
Stirling PDF is open-core. See LICENSE for details.

