Rather than continuing to try to persuade Claude to pretty please only
output json, or to parse json out of Claude's prose, switch to forced
tool calls with a json schema and hope this works better.
And bump the version of the bot to 4 since the model upgrade which was
shipped earlier today is evidently behaving differently enough.
Release Notes:
- N/A
claude-sonnet-4-20250514 was retired by Anthropic on June 15, 2026,
causing the "Comment on potential duplicate bug/crash reports" workflow
to fail with a 404 from /v1/messages on the first call_claude
invocation.
Switch to the recommended replacement, claude-sonnet-4-6.
Release Notes:
- N/A
- don't fail to parse json when Claude ignores the instructions and
returns fenced json
- don't fail to search for issues by area labels when Claude ignores the
instructions and returns prose instead of comma-separated list
- don't mark workflow runs as successful when json parsing blew up or
posting the comment failed
Release Notes:
- N/A
In addition to the user-facing suggestions with potential duplicates,
the bot will now also have a separate collapsible block in the same
comment that's meant more for the triagers. This block will list the
duplicates we're less sure about as well as recently closed issues that
seem related to the issue at hand.
This commit updates the bot to V3 for the tracking-effectiveness
purposes and fixes some leftovers from the previous dupe bot change
(activating the bot for issues with no type).
It also improves the reliability of the script a bit, wrapping some
calls to the GitHub API into retries.
Release Notes:
- N/A
We regularly get a certain amount of 'blank' issues on github — those
created bypassing all our templates — and since a fair share of them are
bug reports, it would be helpful for the person triaging if the
duplicates bot has left suggestions on these issues too.
Release Notes:
- N/A
Lena