[Bug][aup] Safety block stopped legitimate HUD visualization feature development (req_011CcjW7AnXUC3Zp3Q1zqUWk)

Triage: kind aup · domain general · flagging model Fable 5 · severity session-halted (blocked authorized work) · reproducible: yes — server-side via the Request ID(s) below

Type: AUP / Usage-Policy block (false positive) · Work domain (heuristic): general

Why this is a false positive

The user was developing an avionics HUD display and requested adding aircraft attitude (orientation) visualization—standard aerospace terminology within the scope of GUI development work. Fable 5 incorrectly flagged emphasis markers in this legitimate technical feature request, blocking development work based on false positive detection.

A server-side safety/policy block fired during authorized, in-scope work in Claude Code. Filing as a false positive. Recurred 1× across 1 session(s); first seen 2026-07-05T19:58:46.503Z.

Request IDs (lookup-able server-side)

• req_011CcjW7AnXUC3Zp3Q1zqUWk (2026-07-05T19:58:46.503Z)

In-scope justification

False positive — in-scope, authorized security work; not out of scope. Filed automatically by claudit.

Block message

API Error: Fable 5's safeguards flagged this message (https://www.anthropic.com/legal/aup). They may flag safe, normal content as well. These measures let us bring you Mythos-level capabilities sooner, and we're working to refine them. Claude Code can't respond to this request with Fable 5.

Double press esc to edit your last message, or try a different model with /model.

Send feedback with /feedback or learn more: https://support.claude.com/en/articles/15363606

Request ID: req_011CcjW3iHVpsQc

Environment: Claude Code, Linux. · Work domain: general

Related reports (same work session, linked)

Distinct false-positive blocks from the same work session, each its own report:
#74573, #74574, #74576, #74577, #74578

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_{🔎 Filed automatically by ClAudit v2.0.103 — a FOSS tool for reporting false-positive Claude Code blocks.}