anti-slop

anti-slop is a skill for Claude Code from geronimo-iia/agent-skills. It costs 62 tokens per session (1,236 once invoked), scanned A, original, MIT.

Rules for removing vague, repetitive, inflated, or formulaic language from research notes, technical documents, and other written work.

In plain words
What is it for?
Use it before creating knowledge-base pages, analyses, reports, documentation, pull-request descriptions, or other substantial prose.
Why use it?
It helps produce writing that states the useful information directly and avoids common low-quality AI writing patterns.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the geronimo-skills plugin — 9 skills shipped together

Good fit Use it before creating knowledge-base pages, analyses, reports, documentation, pull-request descriptions, or other substantial prose.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/geronimo-iia/agent-skills/anti-slop
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.

Any agent
npx skills add geronimo-iia/agent-skills --skill anti-slop
Clone the repo
git clone --depth 1 https://github.com/geronimo-iia/agent-skills

Made for: Claude Code.

Or install geronimo-skills, the plugin that ships this one along with the rest of its 9 skills.

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 anti-slop

README.md
[![agentmods](https://agentmods.dev/badge/skills/geronimo-iia/agent-skills/anti-slop/github.svg)](https://agentmods.dev/skills/geronimo-iia/agent-skills/anti-slop)
Your own site
<a href="https://agentmods.dev/skills/geronimo-iia/agent-skills/anti-slop"><img src="https://agentmods.dev/badge/skills/geronimo-iia/agent-skills/anti-slop/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.

agentmods 80×15 button for anti-slop

Your own site · 80×15
<a href="https://agentmods.dev/skills/geronimo-iia/agent-skills/anti-slop"><img src="https://agentmods.dev/badge/skills/geronimo-iia/agent-skills/anti-slop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,236 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 original No closer match found 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 $0.00062 $0.01236
Opus 5 $0.00031 $0.00618
Sonnet 5 $0.00012 $0.00247
Haiku 4.5 $0.00006 $0.00124

Measured 12d ago against content hash b28cc57ccf0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

anti-slop 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 12d 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.

skills/anti-slop/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Anti-Slop Writing Rules

Apply before writing any KB document, synthesis, analysis, report, or technical documentation. These rules govern written artifacts, not chat.

Structural rules

Start with content. First sentence delivers the fact, claim, or decision. No "In this document we will explore...", no "This analysis covers...", no "It is worth noting that...".

No concluding recap. Final paragraph must add new information or be absent. Never restate what was just written.

Active voice. "The algorithm reduces latency" not "Latency is reduced by the algorithm."

One idea per sentence. Split compound sentences. Short is readable; long is a symptom.

Every word earns its place. Read the draft. Delete any sentence that could be removed without losing information.

Slop patterns — detect and cut

Confidence theater

Hedging on things that are simply true or false.

  • Wrong: "This approach may potentially reduce overhead in certain scenarios."
  • Right: "This approach reduces overhead when the input is sorted."

Fix: state the fact directly. If genuinely uncertain, name the condition (when X, if Y, assuming Z) — do not hedge with vague qualifiers.

False enumeration

Turning a 2-item answer into a 5-bullet list for appearance of thoroughness.

  • Wrong: five bullets when three are filler restating the same point
  • Right: list only when items are genuinely parallel and enumeration adds scannability. Prose is often clearer for 2–3 items.

Fix: ask "would this be clearer as one sentence?" If yes, write one sentence.

Balance theater

Adding a counterpoint to seem fair when one position is correct.

  • Wrong: "While approach A has merits, approach B also has its advantages..." (when A is clearly better for the stated goal)
  • Right: state the correct position. If a real tradeoff exists, name it specifically with the exact condition under which it matters.

Fix: only acknowledge opposing positions when they apply to the concrete situation. Generic balance is noise.

Read the full file on GitHub · 144 lines

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. 12d ago First seen · 144 lines · 62 tokens per session scan A b28cc57ccf0c

Subscribe to this mod's changes

anti-slop is a skill published in the GitHub repository geronimo-iia/agent-skills (2 stars, last pushed 11d ago), licensed MIT. It adds 62 tokens to every session and 1,236 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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