Skillget

ghostwriter

agent
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  • License — License: MIT
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  • Active repo — Last push 0 days ago
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  • exec() — Shell command execution in skills/evaluate-ghostwriter/scripts/run-eval.ts
  • process.env — Environment variable access in skills/evaluate-ghostwriter/scripts/run-eval.ts
  • process.env — Environment variable access in skills/train-ghostwriter/scripts/prepare-corpus.ts
  • exec() — Shell command execution in skills/train-ghostwriter/scripts/run-agent.ts
  • process.env — Environment variable access in skills/train-ghostwriter/scripts/run-agent.ts
  • spawnSync — Synchronous process spawning in tests/prepare-corpus.test.ts
  • spawnSync — Synchronous process spawning in tests/run-agent.test.ts
  • process.env — Environment variable access in tests/run-agent.test.ts
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SUMMARY

Draft messages that read as you wrote them, not as a model did.

README.md

Ghostwriter

Drafts messages that read as you wrote them, not as a model did

Three agent skills that learn your register from your own writing and keep it on your machine.

Install

npx skills add mblode/ghostwriter -g --agent codex claude-code -y

Runs on whichever of Codex or Claude Code you already have authenticated. No API keys, no service, no database.

Quickstart

Copy the demo voice in:

mkdir -p ~/.config/ghostwriter
curl -o ~/.config/ghostwriter/soul.md https://raw.githubusercontent.com/mblode/ghostwriter/main/examples/soul.md
curl -o ~/.config/ghostwriter/slack.md https://raw.githubusercontent.com/mblode/ghostwriter/main/examples/slack.md

Then ask your agent:

Use ghostwriter to draft a Slack reply saying I agree and can review the PR tomorrow.

The reply comes back in the demo persona's voice, Sam, with no training step first.

Skills

Skill What it does
ghostwriter Drafts, rewrites, and reviews from your per-platform profile, and strips the tells that mark prose as AI.
train-ghostwriter Builds those profiles from your own Slack, email, or WhatsApp exports.
evaluate-ghostwriter Runs blind comparisons to see whether a profile actually helps.

Make it yours

Swap the demo files for your own. soul.md holds your cross-platform core and slack.md holds one platform's register, and you add any <platform>.md you need. A platform file is required; soul.md is optional. Or point train-ghostwriter at your samples and it writes them for you.

Private data

Everything lives under GHOSTWRITER_HOME, which defaults to ~/.config/ghostwriter: soul.md, your platform profiles, plus corpus/, evals/, and backups/. The bundled scripts make no network requests. Codex or Claude Code still sends any prompt you generate to its own model provider.

License

MIT

Crafted by Matthew Blode

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