openwriter

The open-source writing surface for AI agents. Markdown-native editor with pending change review — your agent writes, you accept or reject.

Active — Updated in the last 14 days

Works with

Claude

View on GitHub

35 GitHub stars (35)

+4 in 16 days

Stars gained per day · daily snapshots since Sep 30

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9 skills (9 skills found in its SKILL.md files)
2 forks (2 forks)
1d ago last update (Last updated 1d ago)

Install

Skills CLI

npx skills add travsteward/openwriter

Asks which skills and agents to install. Just one: npx skills add travsteward/openwriter --skill anti-ai — add -g for every project.

Claude Code

git clone https://github.com/travsteward/openwritercp -r "openwriter/skills/anti-ai" ~/.claude/skills/

Copies the anti-ai skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.

Plugin

/plugin marketplace add travsteward/openwriter

Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.

Skills can run code on your machine — read the SKILL.md first.

What it does

Filter skills

In the author's own words, from each skill's SKILL.md.

anti-ai

Anti-AI detection pass for any written text. Hard rules that strip the statistical fingerprints AI writing leaves behind — em-dash density, contrastive formula ("not X, it's Y"), nuclear phrases, copula inflation, sycophantic filler, uniform contractions, colon overuse, register monotony. Two tiers: hard rules (always fix) and voice-gated checks (verify against voice profile if present). Use when…
skills/anti-ai/SKILL.md on GitHub (opens in a new tab)
beat-writer

Channel-agnostic writer for any piece of content that doesn't yet belong to a specific channel. Use when you have something to say but don't know where it goes — could become a blog post, X thread, newsletter section, web copy, journal entry, or just stay as a plain doc. Runs the beat extraction + shaping discipline, pours prose via /authors-voice (with the operator's default anchor — personal vo…
skills/beat-writer/SKILL.md on GitHub (opens in a new tab)
blog-writer

Channel-master writer for long-form blog posts. Owns the SHAPE of a post — beat structure, title/preview/slug commitments, per-post container layout, per-site voice anchor discovery — and delegates VOICE (prose generation) to /authors-voice and PUBLISH mechanics to the openwriter github plugin (`add_blog_site` + `post_to_blog`). Use when: "/blog-writer", "write a blog post", "blog draft", "brains…
skills/blog-writer/SKILL.md on GitHub (opens in a new tab)
book-writer

Orchestration skill for book-scale long-form writing (fiction or nonfiction). Owns the SHAPE of a book project — chapter architecture, beats methodology, workspace management, book mode, scene/science split, vignette library, long-form orchestration. Delegates VOICE (prose generation) to /authors-voice via the Apply Protocol minion dispatch. Loads as governing context at session start when a book…
skills/book-writer/SKILL.md on GitHub (opens in a new tab)
newsletter-writer

Channel-master writer for email newsletter. Weekly pipeline: scaffold structure, gather data, query the author, synthesize in their voice, review, send. Companion doc workflow. Voice-matched via the authors-voice skill. Works for any behind-the-scenes weekly newsletter built on proven content. Use when: "/newsletter-writer", "newsletter", "draft newsletter", "scaffold newsletter", "newsletter gat…
skills/newsletter-writer/SKILL.md on GitHub (opens in a new tab)
openwriter

OpenWriter — the writing surface for AI agents. A markdown-native rich text editor where agents write via MCP tools and users accept or reject changes in-browser. 40 core MCP tools for document editing, multi-doc workspaces, and organization, plus 21 publish platform tools for newsletter, social posting, and scheduling. Tweet compose mode for drafting replies/QTs with pixel-accurate X/Twitter UI.…
skills/openwriter/SKILL.md on GitHub (opens in a new tab)
polish

Polish copy to 90/100. Channel the top 10 advertising practitioners in history. Score, rewrite, score again. Don't stop until 90%. Use when: "/polish", "polish this", "polish", "rewrite this", "improve this copy", "make this better", "score my copy"
skills/polish/SKILL.md on GitHub (opens in a new tab)
x-writer

Writing format, image generation, and pipeline for X (Twitter) content. Paragraph-based medium form, Fischerian Hooks, anti-performance writing. Progressive disclosure: article format scoring, thread/article images, comic strip generation, full brainstorm→polish→schedule pipeline. Built for use with OpenWriter. Use when: "/x-writer", "write for x", "x post format", "write this tweet", "format thi…
skills/x-writer/SKILL.md on GitHub (opens in a new tab)
authors-voice

Author's Voice — constructed-voice skill. Anchors writing to a training-data author blend, progressively layers NEVER rules, presentation fingerprints, sentence stats, coined terms, and curated examples from a growing local corpus. Pure markdown, opus sub-agent (the minion) writes prose. Use when: "/authors-voice", "/writers-voice", "set up my voice", "anchor my voice", "voice match", "use my voi…
plugins/authors-voice/skill/SKILL.md on GitHub (opens in a new tab)

Review before you install

A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.

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openwriter