Audit of every code path that can produce the login->/->login cycle
found the observed loop was one instance of a repeatable class: any
automatic API call that persistently 401s while the Supabase session is
valid triggers httpErrorHandler's hard redirect to /login, which sees
the valid session and bounces back. Close the class, not just the
instance:
- saas apiClient: a 401 that survives a refresh-and-retry means the
backend rejected a valid token (authz bug / wrong origin), not an
expired session - never redirect to /login for it. Also fix the stale
publicEndpoints entry ('endpoints-enabled' matched nothing; the real
routes are endpoints-availability and endpoint-enabled).
- httpErrorHandler: sessionStorage loop breaker - if a 401 redirect
already fired within 10s, suppress the repeat instead of cycling.
- Guard the remaining unflagged automatic callers: /api/v1/credits
(fires on session init and TOKEN_REFRESHED), endpoints-availability
(fires on app load), and ui-data/login (auto-called when a stale
stirling_jwt is present).
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.

