Borrowing it
Nothing to install: this file belongs to marcelolebre/anti-slopper. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/marcelolebre/anti-slopper/main/AGENTS.mdgit clone --depth 1 https://github.com/marcelolebre/anti-slopperWrote 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/instructions/marcelolebre/anti-slopper/agents-md)<a href="https://agentmods.dev/instructions/marcelolebre/anti-slopper/agents-md"><img src="https://agentmods.dev/badge/instructions/marcelolebre/anti-slopper/agents-md/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/instructions/marcelolebre/anti-slopper/agents-md"><img src="https://agentmods.dev/badge/instructions/marcelolebre/anti-slopper/agents-md.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 | $0.00148 | $0.00148 |
| Opus 5.5 | $0.00059 | $0.00059 |
| Sonnet 5.5 | $0.00030 | $0.00030 |
| Haiku 4.5 | $0.00015 | $0.00015 |
Grade A, and why
anti-slopper AGENTS.md 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 1mo 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
Instructions for coding agents
This repository is a writing skill. Before writing any prose a person will read (PR descriptions, commit messages, docs, comments, chat replies, social posts), read SKILL.md and follow it while drafting. Run its self-audit before delivering the text.
Keep the writing guidance self-contained in SKILL.md, with no required tools or platform dependencies. Its search command is optional; without shell access, apply the checks by reading.
For changes to the skill's behavior, use the writing checks. Evaluate the resulting prose against the supplied facts and request. Keep intentionally weak examples and protected literals distinct from prose you're composing when running style checks.
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.
- 1mo ago Changed · +2 lines · +48 tokens per session f3e16a779eb8
- 2mo ago First seen · 6 lines · 100 tokens per session scan A 5d1c2ea6079a
anti-slopper AGENTS.md is an instructions file published in the GitHub repository marcelolebre/anti-slopper (2 stars, last pushed 1mo ago), licensed MIT. It adds 148 tokens to every session, about $0.0006 per session on Opus 5.5. 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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