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. Plain .md files on disk — no database, no lock-in.
Use when user says: "open writer", "openwriter", "write in openwriter",
"edit my document", "review my writing", "check the pad", "write me a doc",
"compose tweet", "reply to tweet", "quote tweet", "author's voice",
"authors voice", "voice plugin".
Requires: OpenWriter MCP server configured. Browser UI at localhost:5050.
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
project is detected, OR via explicit invocation.
Use when: "/book-writer", "/book", "write a book", "book project",
"chapter beats", "chapter architecture", "beat map", "TOC", "table
of contents", "book outline", "book reshape", "draft a chapter",
"long-form", "multi-chapter", "book mode", "book workspace", any work
involving multi-chapter book structure.
NOT for: single-chapter essays, blog posts, tweets — those go to
/authors-voice directly. Voice-only setup (anchor blend, NEVER rules,
fingerprints, corpus analysis) lives in /authors-voice.
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. Plain .md files on disk — no database, no lock-in.
Use when user says: "open writer", "openwriter", "write in openwriter",
"edit my document", "review my writing", "check the pad", "write me a doc",
"compose tweet", "reply to tweet", "quote tweet", "author's voice",
"authors voice", "voice plugin".
Requires: OpenWriter MCP server configured. Browser UI at localhost:5050.
