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.
npx skills add skilletmd/skillet --skill tighten-thisgit clone --depth 1 https://github.com/skilletmd/skilletWrote 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.
[](https://agentmods.dev/skills/skilletmd/skillet/tighten-this)<a href="https://agentmods.dev/skills/skilletmd/skillet/tighten-this"><img src="https://agentmods.dev/badge/skills/skilletmd/skillet/tighten-this/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/skilletmd/skillet/tighten-this"><img src="https://agentmods.dev/badge/skills/skilletmd/skillet/tighten-this.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00052 | $0.00532 |
| Opus 5 | $0.00026 | $0.00266 |
| Sonnet 5 | $0.00010 | $0.00106 |
| Haiku 4.5 | $0.00005 | $0.00053 |
Grade A, and why
tighten-this 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 11d 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.
What it actually says
tighten-this
First drafts carry padding the idea doesn't need. Keep the ideas; cut the words around them. This skill is one editing pass: keep the meaning, cut the padding, surface the point.
When to use
Any draft that feels long or buried — an email, a doc, a PR description, a message, a launch post. Run it after the draft exists, not while you're writing.
The pass
1. Put the point first
Find the one sentence that says what you actually want. Move it to the top. If a reader stops after the first line, they should still get the message.
2. Cut the throat-clearing
Delete openers that carry no information:
- "I just wanted to reach out to..." → start with the ask.
- "It's worth noting that..." → just note it.
- "In order to" → "to". "At this point in time" → "now". "Due to the fact that" → "because".
3. Drop the hedges
"I think maybe we could possibly" says nothing. Pick one: you recommend it or you don't. Hedging reads as insecure or evasive.
4. Active voice, real subject
"A decision was made to delay" → "We delayed." Name who does what. Passive voice hides the actor and adds words.
5. One idea per sentence
A sentence with two "and"s and a "which" is usually three sentences crammed into one. Break it up. Short sentences are easier to trust.
6. Replace adjectives with the fact behind them
"Blazingly fast" tells the reader nothing; "under 200ms" does. When you reach for an adjective, ask what made you reach for it, and write that instead.
The read-aloud test
Read the result out loud. Anywhere you stumble, run out of breath, or sound like a press release — rewrite that line. If a sentence survives only because it sounds nice, cut it.
What not to do
- Don't flatten a personal message into a telegram. Concise is the goal; curt is not.
- Don't cut the one caveat that keeps a claim honest. Tightening removes padding, not truth.
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.
- 11d ago First seen · 46 lines · 52 tokens per session scan A fb82c157eca8
tighten-this is a skill published in the GitHub repository skilletmd/skillet (3 stars, last pushed 11d ago), licensed Apache-2.0. It adds 52 tokens to every session and 532 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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