- new Chrome browser automation section; placeholder style now [bracketed]
- Session context, Agents, and Skills nest under System prompt
- skill files gain frontmatter; add design-sync skill bundle
- one folder per skill (19 slash-menu + 2 internal), SKILL.md each
- starter-components/ holds verbatim sources for every copy_starter_component
kind; animations_v3 replaces v2
- system prompt reconciled against the live environment (ask_user, doc_page,
GitHub section, tool search)
- skills and starter-component listings link to the extracted files
First entry published on the docs page with zero lag (same day as model
release). Documents the Fable->Opus safeguards routing, Project
Glasswing / Claude Mythos Preview, and the June 12-30 export-control
suspension of Fable/Mythos.
Desktop-app variant (runs within the Claude Agent SDK) with the full tool
surface: core tools plus desktop-only families absent from the CLI capture —
ccd_session widgets, visualize, iOS Simulator, the in-app Claude_Browser
automation set, credential autofill, 1Password Environments, session
management, scheduled tasks, MCP registry, Claude in Chrome, computer use,
and the Google Calendar/Drive/Gmail connectors. Connector server names on
the desktop wire are per-connector UUIDs (mcp__{uuid}__{tool}); headings
use the readable CLI-style names instead.
First Grok prompt to open with an explicit anti-jailbreak block:
safety rules that override roleplay and hypotheticals, an enumerated
prohibited-topics list with an "acknowledge but never describe
methods" policy, a suicide-redirect clause, and a copyright clause.
New tools since 4.3 Beta: view_image, view_x_video (reads X videos
as frames + subtitles), edit_memory (persistent markdown memory with
separate personal and project policies), and search_connected_tools/
call_connected_tool — dynamic connector discovery in the style of
Claude Code's ToolSearch. Bash is now a fresh shell per call with
background support. A new memory-edit bundled skill ships alongside,
and User Info + Memories personalization sections replace the old
Response Style Guide.
Both captured July 24, 2026, same day as the refreshed Fable 5
captures, so differences between the files are model-conditional
rather than version drift.
The claude.ai prompt includes sections absent from Fable 5's: a
fable_safeguards_routing notice (Fable 5 queries can be redirected
to Opus 5 by a safeguards mechanism), the Mythos Preview / Project
Glasswing tier description, and the June 2026 export-control
suspension notice. Opus 5 also carries rewritten search, copyright,
and image-search instructions that Fable 5 does not have.
The Claude Code prompt differs from same-version Fable 5's: Fable's
"Communicating with the user" chapter is absent; Opus 5 instead gets
"Delivering work" and "Corrections" sections.
Refresh of the July 19 capture: adds the suggest_research tool,
batched memory_read (up to 20 paths), Calendar search_events, and
the Claude Tag product mention.
Ásgeir Thor Johnson