A licensed plugin for Claude

A writing system with teeth.

This isn't a generic plugin. Its rules engine and writing method are built in-house, not off the shelf — and the voice it locks in is yours.

Lock your project's voice into a config every skill enforces, then draft, refine and repurpose against it. It goes further than a style guide: it won't draft a topic until it has an angle only you would take — so nothing you publish reads like everyone else's. Nothing drafts until your rules exist, and the writing gets sharper the more you use it.

Perpetual licence·12 months of updates·Instant download

The difference

Most tools hand you a style guide and hope you follow it. Copylock enforces yours.

Most AI-writing tools clean up after the fact. A rewriter like PaperBleach takes finished AI text and rewrites it to slip past detectors — but the words are still the model's, just disguised. Copylock works at the source, inside Claude: it drafts in your voice, to your rules, from the first line.

01It refuses to write a generic explainer. Nothing drafts until the topic has an angle only you would take — so your writing has something to say, not just a way of saying it.
02One config every skill reads — the single source of truth for your voice.
03A hard human copy gate. Nothing ships without you signing it off.
04Enforced checks, not reminders — a hype word or a stray exclamation mark keeps the piece from publishing until it's fixed.
05Clarity over compression, enforced as a standing rule on every line.
06A loop that learns from your edits and proposes rule changes you approve.
07Your voice is yours. Copylock ships you the method and asks for your voice — none of ours comes baked in.
08AI writing has giveaways: an invented statistic, a relentlessly upbeat tone, a "studies show" with no study behind it. Copylock flags them only when several pile up in one passage.
What's inside

Nine skills. One enforced voice.

Start with voice-setup; it writes the two config files every other skill reads. Add the learning loop and the distribution skills when you need them. New in 1.1: clear-writing now spots 23 patterns that make writing read as AI, and flags them only when several appear together.

voice-setup Core

Start here. A ten-minute interview builds your voice config — how you want to sound, your hard rules, and a sample you approve. Nothing else runs until it exists.

clear-writing Core

Clarity over compression — cut the jargon, keep drafts reading like you wrote them. It also spots 23 patterns that make writing read as AI, and flags them only when several pile up together.

draft-piece Core

Draft a long-form piece against your config: one idea, one search phrase to rank for, headings that guide the reader, and a final gate only you can pass before it ships. It won't start until the topic has an angle only you would take — so you never get a polished piece that says nothing.

refine-copy Core

Line-level suggestions against your rules. Never auto-applied — you accept or reject each one.

learn-from-edits Learn

Compares what it drafted with what you published, finds what you keep changing, and proposes rule updates for you to approve.

repurpose-piece Reach

Turn one approved article into posts written for each platform — every field filled in and ready to paste, not a link dump.

outreach-copy Reach

Cold emails built from a real reason to reach out and checked against your rules — outreach that reads like a person and earns a reply.

content-strategy Reach

A keyword-led plan for what to write: topics grouped into themes, one search phrase per piece, built so the articles keep earning traffic long after you publish.

map-corpus Reach

Angles Pro. Map the material your ideas come from and the angle you take on every question people search — so your backlog fills with points only you would make, not generic subjects. Supersedes the one-line angle in Core.

How it works

Three steps, then it compounds.

Step 01

Lock your voice

Run voice-setup. It writes VOICE-RULES.md and copylock.json into your project — the rules every skill reads.

Step 02

Draft and refine

Write with your rules enforced, not suggested. Nothing publishes until you, the copy gate, sign it off.

Step 03

Let it learn

Edit as you normally would. learn-from-edits watches the difference and proposes rule changes you approve.

See it work

What enforcement actually looks like.

Copylock runs inside Claude. Four moments show what it does: it won't draft a topic until you give it an angle only you would take; it writes your voice into rules every draft obeys; it checks each line against those rules, and nothing changes until you accept it; and it turns edits you repeat into new rules you approve.

The angle gate: Copylock refuses to draft a topic with no angle, showing 'This topic has no angle yet. Add the point only you would make, or draft a plain explainer,' with buttons to add your angle or draft a plain explainer.
Lock your voice: voice-setup turns a dozen short questions into a rules file you own, setting register, exclamation marks, hard-block words and a named copy gate, ready to approve.
The copy gate: Copylock checks a draft against your rules and lists fixes to accept or reject, flagging hype and unmeasured claims and keeping a locked brand name; nothing changes until you accept.
Learn from edits: Copylock notices you've changed the same word three times and offers to add it as a rule, with Approve and Not now; each new rule waits for your approval.

Illustrative renders · not literal screen captures.

Pricing

Buy the base. Add what you need.

A one-time, perpetual licence — not a subscription. Core is the required base; each add-on needs it installed first.

Core
£79
The required base
  • voice-setup, clear-writing, draft-piece, refine-copy
  • The two config templates
  • Angles: won't draft a topic until it has your angle
Get Core
Learn
£55
Add-on · requires Core
  • learn-from-edits
  • The refinement loop that improves your rules from your edits
Add Learn
Reach
£79
Add-on · requires Core
  • repurpose-piece, outreach-copy, content-strategy, map-corpus
  • Angles Pro: maps your material and gives every topic its angle
  • Strategy and distribution templates
Add Reach
Best value
Complete
£159 vs £213
Everything, ~25% off
  • All nine skills
  • Every template, the writing system whole
Get Complete

Team licences (five seats) available on every tier. Own Core already? CORE20 takes 20% off an add-on. Every licence includes twelve months of updates; new major versions are offered to existing licensees at 40% — an optional upgrade, nothing renews or expires.

Start here

Give your writing a lock, not a style guide.