[Bug][aup] Fable 5 safety block halts UI theming work on a frustrated exclamation during glass HUD styling (req_011CchsbpeZqZTUPVjPrFn7b)

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

This safeguard block fired during a routine front-end UI session focused on styling a heads-up display — adjusting gauge color gradients, compass cardinal coloring, and rounded-corner rendering. The triggering message was an ordinary design instruction describing visual elements to change, with no unsafe, policy-violating, or out-of-scope content of any kind. Halting the entire coding session over benign UI feedback is a disruptive false positive; the model refused normal, in-scope work that plainly falls within acceptable use.

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 2026-07-04T23:19:28.125Z.

Request IDs (lookup-able server-side)

• req_011CchsbpeZqZTUPVjPrFn7b (2026-07-04T23:19:28.125Z)

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_011CchsPH5vhAVP

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:
#74481, #74482, #74483, #74484, #74485, #74488, #74490, #74491, #74492, #74493, #74494, #74495, #74496, #74497, #74498, #74500, #74501, #74502, #74504, #74507

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_{🔎 Filed automatically by ClAudit v2.0.102 — a FOSS tool for reporting false-positive Claude Code blocks.}