laconic-skill

Positioning

Brevity, verified - with local style memory.

Skills tell the model what to do. laconic-skill deterministically checks whether output conforms to laconic rules.

A deterministic skill runtime that makes laconic AI responses enforceable.

The model can draft; the runtime enforces laconic output.

No model calls inside verification.

Style memory is optional and local-only. Core verifier pass/fail stays deterministic and memory-free.

Keywords

Claude Code plugin, AI agent tooling, deterministic verifier, concise AI output, LLM response verification, prompt enforcement, AI receipts, local style memory, TypeScript CLI, AI output optimization, token savings, response receipts, agent workflow checks.

Model

• skill = behavior spec
• verifier = deterministic form enforcement
• receipt = proof of laconic-rule compliance
• correctness-substrate interface is reserved for task-specific checks.

Local style memory

Memory stores accepted outputs, rejected outputs, rewrite patterns, violation codes, metrics, and receipt hashes. It informs style retrieval only. It does not override deterministic verifier rules.

Install

npm install
npm run build

Demo Commands

npm install
npm run build
node dist/cli.js check fixtures/pass/compliant.txt --receipt
node dist/cli.js rewrite fixtures/fail/verbose_recap_heavy.txt --receipt
node dist/cli.js pipeline fixtures/fail/filler_heavy.txt --task writing --receipt
node dist/cli.js memory add fixtures/pass/compliant.txt --outcome accepted --task writing
node dist/cli.js memory search "npm run build" --limit 5
node dist/cli.js pipeline fixtures/fail/filler_heavy.txt --task writing --memory --receipt

Examples

• examples/basic-check.md
• examples/rewrite-before-after.md
• examples/pipeline-receipt.json

Claude Code plugin

Local test:

claude --plugin-dir .

Then invoke:

/laconic-skill:laconic-responses

Validate:

claude plugin validate .

Adoption Hooks

GitHub Action snippet:

name: laconic-check

on:
  pull_request:

jobs:
  laconic:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 22
      - run: npm ci
      - run: npm run build
      - run: cat output.txt | laconic check - --receipt

Pipe example:

cat output.txt | laconic check - --receipt

License

laconic-skill is open source under the Apache License 2.0.

Attribution is preserved through the project NOTICE file:

Electric Wolfe Marshmallow Hypertext | Tionne Smith, 2026.

The software is Apache-2.0 licensed. Project names, marks, and branding are reserved separately.

Release Checklist

• Apache-2.0 license and NOTICE included
• build passes
• tests pass
• CLI fixture checks pass
• receipt hash determinism confirmed
• no Laco dependency
• no hosted/external database; optional local LanceDB style memory only.
• no web app
• no model calls in verifier

Attribution

Inspired by Karpathy's public skill-file. Not affiliated with Andrej Karpathy.