tighten

tighten is a command for Claude Code from MariHQ/mari-cc. It costs 8 tokens per session (171 once invoked), scanned A, a copy of clarify, MIT.

An editing command that makes writing shorter and clearer while preserving its meaning and voice.

In plain words
What is it for?
Use it on a file, a named document such as a changelog, or files edited during the current session.
Why use it?
It removes unnecessary words and filler without simply deleting important content. It also checks the edited file for new issues.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the mari plugin — 1 skill, 9 commands, 2 hooks shipped together

Good fit Use it on a file, a named document such as a changelog, or files edited during the current session.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/marihq/mari-cc/tighten
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/MariHQ/mari-cc

Made for: Claude Code.

Or install mari, the plugin that ships this one along with the rest of its 1 skill, 9 commands, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for tighten

README.md
[![agentmods](https://agentmods.dev/badge/commands/marihq/mari-cc/tighten.svg)](https://agentmods.dev/commands/marihq/mari-cc/tighten)
Your own site
<a href="https://agentmods.dev/commands/marihq/mari-cc/tighten"><img src="https://agentmods.dev/badge/commands/marihq/mari-cc/tighten.svg" alt="Measured on agentmods" height="20"></a>
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 171 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 88% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00008 $0.00171
Opus 5 $0.00004 $0.00086
Sonnet 5 $0.00002 $0.00034
Haiku 4.5 $0.00001 $0.00017

Measured 7d ago against content hash 29834e780363, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

tighten scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

88% identical to clarify — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

commands/tighten.md · 10 lines

What it actually says

Run the tighten editorial verb from the mari skill on $ARGUMENTS (a path, a natural-language reference like "the changelog", or — if omitted — the file(s) just edited this session; ask if none).

Setup first: load PRODUCT.md / STYLE.md / FACTS.md if present, read a representative file for voice, resolve the register, and run mari detect <target> for ground truth. Then apply the verb's reference flow: references/reference-tighten.md in the mari skill. Preserve the author's meaning and voice — rewrite, not delete. Finish by re-running mari detect and fix any findings the edit introduced.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 10 lines · 8 tokens per session scan A 29834e780363

Subscribe to this mod's changes

tighten is a command published in the GitHub repository MariHQ/mari-cc (32 stars, last pushed 27d ago), licensed MIT. It adds 8 tokens to every session and 171 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to clarify, differing in 6 lines, and is treated as a copy.