Anthropic Published a New Guide on How to Strip The...  🔗 **Source:** [Anthropic Published a New Guide on How to Strip The...](https://twitter.com/addyosmani/status/2095402662963646748/?rw_tt_thread=True) > [!note]+ Document Notes > tags: [prompt-engineering, mannered-prose, claude-fable-5-1, writing-density, ai-writing-style, anthropic-docs, addy-osmani] > author: Addy Osmani > source: X (formerly Twitter) — @addyosmani > reference: https://twitter.com/addyosmani/status/2095402662963646748/?rw_tt_thread=True > date created: 2026-09-03 12:40 > > <!-- deep-read: light-touch --> > > > [!info] Generated analysis — not the author's words. Sections below are machine-written > > from the captured source. Only text inside `> [!quote]` blocks is verbatim from the author. > > Do not quote or attribute any other line to the named author. > > # 🏷️ Title: Anthropic published a new guide on how to strip the "Claude" out of Claude's writing > > > [!note] Why this is a light-touch note > > The source is a **42-word** pointer tweet with one link and one screenshot. The thing it points at, Anthropic's *Prompting Claude Fable 5.1* page, was deep-read on 2026-09-02 as Reader doc `01m1gzqdxaswbr8x2j79k96ess` (18 sections, highlights, backlog row). Running the full template on the pointer would duplicate that note. This captures what the tweet adds: a framing, a screenshot of the prompt, and a reach signal. > <!-- deep-read:sections start --> ## 📝 Summary Addy Osmani (Google Chrome team) surfaces Anthropic's Fable 5.1 prompting guide and names the section that matters to writers: the mannered-prose definition. His framing is "how to strip the 'Claude' out of Claude's writing," and he calls the supplied paragraph "an official de-flavoring prompt for Fable 5.1, which already cuts back on AI boilerplate/jargon." The screenshot (not captured as text) is presumably the prompt block from the "Writing density" section. Two things the tweet adds to the source itself. First, the framing: Osmani reads the guide as a style-removal tool, not a migration guide, which is how most readers will encounter it. Second, the reach: a widely-followed DevRel voice choosing this one section out of fourteen confirms that writing density is the part practitioners noticed. The `#writing-density` fragment in Courtney's own save of the guide points the same way. ## 🔖 Atoms ### [H1] The guide's fourteen sections are being received as one section > [!quote] ID:rw_01m1kgw5ahgx4bb6xcj00k1xr1 > "Here's an official de-flavoring prompt for Fable 5.1, which already cuts back on AI boilerplate/jargon:" A migration document with fourteen behavioral deltas is being shared for the one that names a writing habit. The audience for "how do I make it stop sounding like Claude" is larger than the audience for "how do I fix tool-call batching," and the share pattern reflects that. Tags: `#atom/literature/h1` ## 💡 Personal relevance - The mannered-prose rule from that guide was added to `~/.claude/CLAUDE.md` Writing style on 2026-09-02 ("No mannered prose: when a literal phrase exists, use it"). Osmani's tweet is external confirmation the rule is the load-bearing one. - "De-flavoring" is a better user-facing word than "mannered prose" for a blog post about the change. If she writes the CLAUDE.md-revision post, that's the term readers will search. - Nothing else here; the analysis lives in the 2026-09-02 note. See `01m1gzqdxaswbr8x2j79k96ess`. ## ✏️ Fleeting Queue - "De-flavoring prompt" as a term: does it predate this tweet? If Osmani coined it, credit him; if it's circulating, note where. `#atom/fleeting/f1` ## → Things 3 (max 2 actions) 1. **Link this doc to the Fable 5.1 guide note** in the vault when the guide's Literature note is written, as the reception example. `#action/h4` <!-- deep-read:sections end --> 📄 **Full text:** [[Full Document Contents/Tweets/Anthropic Published a New Guide on How to Strip The....md|Anthropic Published a New Guide on How to Strip The... by Addy Osmani]] ## Highlights - Here's an official de-flavoring prompt for Fable 5.1, which already cuts back on AI boilerplate/jargon: ([View Highlight](https://read.readwise.io/read/01m1kr9szr232ebttnw4nj6fvc)) - Note: H1 — The fourteen-section guide is received as one section: the mannered-prose "de-flavoring" prompt. See doc 01m1gzqdxaswbr8x2j79k96ess. #atom/literature/h1 - Tags: atom/literature/h1