Best Writing Plugins, Skills, and MCP Servers in 2026
Research-backed writing skills, plugins, and MCP servers for drafting, editing, style, and translation.
Updated July 26, 2026
These extensions make an agent a genuinely useful writing partner. Drafting workflows run a real writing process instead of one-shot generation, style skills strip the AI tells and hold a standard, and translation servers put professional translation behind the agent. Pick by the job in front of you.
Anthropic’s official skill for internal communication: status updates, announcements, and team memos written in a clear, direct voice from the bullet points and context you give it.
Recurring team communication you write weekly anyway. It keeps the format consistent and cuts the drafting time; for substantial documents, use Doc Co-Authoring instead.
Four separately installable skills that form one long-form writing method: writing-fragments collects your raw material, writing-shape structures it, and writing-beats plans the argument beat by beat - shape and beats are alternative middle stages, pick one per piece - then edit-article rewrites the draft hard.
For articles and essays where one-shot generation produces generic output. The stages work individually - edit-article alone is a strong editor - but the full method is what turns notes into a piece with an actual argument.
Anthropic’s official co-writing skill. It aligns on purpose and audience first, drafts the document section by section, works your feedback in as it goes, and then tests whether a fresh reader would actually understand the result.
Workplace documents where structure carries the weight - specs, proposals, decision docs, reports. Less suited to short posts, where the process is more ceremony than help.
Vercel’s concrete prose rules packaged as a skill: sentence length, hedging, filler, structure. Instead of editing afterwards, it steers how the agent writes while it writes.
When you want a consistent standard across everything the agent produces rather than fixing each draft. Pairs naturally with Humanizer - guidelines steer during, Humanizer cleans after.
The Chinese-language adaptation of Humanizer. It targets the patterns that mark machine-written Chinese - translated-sounding constructions, filler transitions, over-formal register - and rewrites them into natural prose.
Any Chinese writing an agent produces that people will actually read. The gap between raw model output and natural prose is even wider in Chinese than in English, and this targets it directly.
A translation skill built on a three-step method: a literal pass, a critique of what reads unnaturally, then an idiomatic rewrite. Strongest for Chinese–English work, where the method originated.
Content you’ll publish, where a literal machine translation isn’t good enough. It costs more tokens than a one-shot translation and earns them on quality.
The original de-AI-ing skill. It works from a catalog of documented AI-writing signs - inflated transitions, empty emphasis, formulaic structure - and rewrites drafts so the patterns disappear rather than just get rephrased.
As a final pass over anything going out under your name. It edits what was written; if you want the agent to write differently in the first place, add Writing Guidelines alongside it.
A community suite of 18 academic-writing skills: paper structure, section drafting, polishing prose to journal register, reviewer responses, and figures. Each skill installs separately, and the count shown is the most-installed one (nature-figure) - adoption spreads across the suite rather than pooling in one skill.
Papers, theses, and grant writing - it encodes the conventions reviewers expect instead of leaving them to the model’s defaults. For general articles it over-formalizes; use Matt Pocock Writing Skills instead.
Translated’s official MCP server for its Lara translation platform: text translation, language detection, and context handling, served from a hosted endpoint with a local npm alternative from the same repository.
Volume translation through a dedicated engine rather than the model itself. The hosted endpoint sets up with a browser login, so there’s no local server to run.
A blunt instrument: hard bans on the words and constructions that mark AI slop. No rewriting philosophy, just a list the agent is not allowed to touch.
DeepL’s official MCP server, run locally from npm and backed by the DeepL API: text and document translation, rephrasing, language operations, and your organization’s glossaries.
Teams that already standardize on DeepL and need terminology to stay consistent across translations. For one-off translation, a skill like Baoyu Translate costs nothing.
Crowdin’s official hosted MCP server for localization operations: projects, source strings, translations, and terminology, worked on from inside the agent.
Ongoing product localization - many languages, many strings, continuous updates. Not for translating a single document; use DeepL or a translation skill for that.