Fix crypto.randomUUID on DeepSeek Harness LAN HTTP
Official Discussion #514 reports a browser crash when crypto.randomUUID is used over plain HTTP on a LAN address. Browsers restrict some APIs to secure contexts; use loopback for local work or a properly configured HTTPS origin rather than weakening browser security. This page separates verified behavior from community reports and marks the release-candidate context so you can act without mistaking an observation for a permanent guarantee.
What is verified now
Official Discussion #514 reports a browser crash when crypto.randomUUID is used over plain HTTP on a LAN address. Browsers restrict some APIs to secure contexts; use loopback for local work or a properly configured HTTPS origin rather than weakening browser security.
Evidence basis: Official Discussion #514 + secure-context requirement. The status was checked on 14 August 2026; re-check the linked source after any dsh release.
Safe workflow
Use the smallest reversible workflow first. Do not add community plugins or paste credentials while validating the base behavior.
- Copy the exact error and record OS, Node and dsh versions.
- Apply the narrow checks on this page in order.
- Verify with a minimal profile and escalate with sanitized logs if it persists.
Verify before moving on
A successful result should be observable: a version string, reachable local URL, valid provider response, loaded configuration, or disappearance of the exact error. If the result differs, stop and capture sanitized evidence rather than stacking unrelated fixes.
- Record the exact dsh, Node or Python version.
- State the operating system and installation method.
- Link the first-party source and include only sanitized logs.
First-party sources
Open the pinned or retrieved source before acting on a changed release candidate.
Community reports
These are open user reports hosted in the official repository. They are not publisher confirmation and have not been independently reproduced by this guide unless a separate local reproduction is linked.