anthropics / anthropics/claude-code

[Bug] Anthropic API Error: False Positive Safety Filter Flagging

Open
#94,250 0 comments 0 reactions 0 assignees View on GitHub
area:model bug duplicate platform:windows
Dominant language
Python
Stars
145k
Forks
23.1k
PR merge metrics
PR metrics pending

Description

**Bug Description**
i am getting safeguard flagged, which is a false positive here, there was nothing unsafe about my requet,

**Environment Info**
- Platform: win32
- Terminal: null
- Version: 2.1.270
- Feedback ID: 776d2306-5bbb-4758-ab0f-422d1be6c3e9

**Errors**
```json
[{"error":"TelemetrySafeError: VirtualMessageList: itemKeys/messages length desync (keys=108 messages=107 range=[79,108))\n at o8t (B:/~BUN/root/chunk-dj61bmmj.js:36:28828)\n at twe (B:/~BUN/root/chunk-dj61bmmj.js:36:21633)\n at Uo (B:/~BUN/root/chunk-hyn8a58h.js:18:20036)\n at Qu (B:/~BUN/root/chunk-hyn8a58h.js:18:38202)\n at em (B:/~BUN/root/chunk-hyn8a58h.js:18:84283)\n at eg (B:/~BUN/root/chunk-hyn8a58h.js:18:83283)\n at yc (B:/~BUN/root/chunk-hyn8a58h.js:18:83112)\n at Wh (B:/~BUN/root/chunk-hyn8a58h.js:18:79637)\n at Fe (B:/~BUN/root/chunk-hyn8a58h.js:18:6261)\n at ot (B:/~BUN/root/chunk-hyn8a58h.js:18:4792)","timestamp":"2026-09-14T08:24:01.787Z"}]
```

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with feedback ID 776d2306-5bbb-4758-ab0f-422d1be6c3e9 and the bundled stack trace from version 2.1.270 on win32; no source file or test is identified. Reproduce the safety-filter report and the VirtualMessageList length desynchronization, then verify that safe requests are accepted without the reported telemetry error.

Written by the indexing model from the issue text.

Assessment

Tech stack
bun
Domain
api, security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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