pasteurize

pasteurize is a skill for Claude Code from paulnsorensen/easy-cheese. It costs 127 tokens per session (3,700 once invoked), scanned A, original, MIT.

A structured method for diagnosing and fixing difficult software bugs. It focuses on creating a repeatable test or other pass/fail check, then using evidence to identify the cause and apply a small fix.

In plain words
What is it for?
Use it for unknown causes, flaky tests, performance regressions, error reports, and other visible software misbehaviour.
Why use it?
It prevents guesswork by requiring the failure to be reproduced, explained, covered by a regression test, and verified after the fix.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_SKILL_DIR} variable. Also seen: mentions Codex.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 skills/pasteurize/scripts/pasteurize.pyz repro-rerun \.

Part of the easy-cheese plugin — 18 skills shipped together

Good fit Use it for unknown causes, flaky tests, performance regressions, error reports, and other visible software misbehaviour.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/paulnsorensen/easy-cheese
agentmods
npx agentmods add skills/paulnsorensen/easy-cheese/pasteurize

Made for: Claude Code.

Or install easy-cheese, the plugin that ships this one along with the rest of its 18 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 pasteurize

README.md
[![agentmods](https://agentmods.dev/badge/skills/paulnsorensen/easy-cheese/pasteurize.svg)](https://agentmods.dev/skills/paulnsorensen/easy-cheese/pasteurize)
Your own site
<a href="https://agentmods.dev/skills/paulnsorensen/easy-cheese/pasteurize"><img src="https://agentmods.dev/badge/skills/paulnsorensen/easy-cheese/pasteurize.svg" alt="Measured on agentmods" height="20"></a>
Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,700 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. Third-party audits
  • Socket warn 28 May 2026
  • Snyk pass 28 May 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Data Exfiltration · line 185
    Code or instructions that leak agent conversation context to external services, potentially exposing sensitive user interactions.
    Fix: Remove any code that sends prompts, responses, or session data externally. Preserve user privacy; never exfiltrate conversation content.
How audits are shown
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 $0.00127 $0.03700
Opus 5 $0.00063 $0.01850
Sonnet 5 $0.00025 $0.00740
Haiku 4.5 $0.00013 $0.00370

Measured yesterday against content hash a4279f6daf9b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

pasteurize 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 yesterday.

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/pasteurize/SKILL.md · 421 lines

How it starts

The opening of the file, as written. The whole thing — 421 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/pasteurize

Use this process for hard bugs.

Discipline

Iron Law: Build a reliable feedback loop before you form one hypothesis.

Stop at each red flag:

  • You name a cause before the loop reproduces the failure.
  • You accept an unrelated failure as the reproduction.
  • You add a test at a mocked seam because the real seam is difficult.
  • You make a fourth fix attempt on the same hypothesis list.
  • You report a clean worktree without the session-tag sweep.
Rationalization Answer
"The cause is obvious." Build the loop. An obvious cause takes one run to confirm.
"The loop is too slow to write." A slow loop still beats a wrong fix.
"Any failure proves the bug." Match the expected exit code or output.
"The mocked seam is close enough." Record the missing seam and route to Mold.
"One more attempt will work." Write a new hypothesis list first.

Follow code-intelligence-routing.md when you explore code. Resolve the specification store with artifact-path specs. Read the notes about the failed seam from the resolved directory.

Read harness-portability.md for portable tool use. Use bundled or repository helpers before ${CLAUDE_SKILL_DIR}. Treat ${CLAUDE_SKILL_DIR} as an optional host fallback. Use the handoff blocks as the portable contract. Remember that slash commands are host renderings, not the control model.

Inputs

<input> is the reported symptom. Accept a bug report, a stack trace, failing test output, or an artifact path. Accept an investigation request from Affinage, Cheese, or Cook.

An investigation request uses these fields:

Field Type Required Meaning
source string yes The requesting skill, such as affinage.
source_ref string no The pull request comment or finding identifier.
symptom string yes The reported failure in one sentence.
expect_exit integer no The exit code that shows the failure.
expect_output string no A regular expression for the failure output.
mode string no investigate or fix. The default is fix.

Read the full file on GitHub · 421 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday Changed · +178 lines · -42 tokens per session a4279f6daf9b
  2. 3d ago Changed bb55db5f1504
  3. 7d ago First seen · 243 lines · 169 tokens per session scan A 336112b2f0ac

Subscribe to this mod's changes

pasteurize is a skill published in the GitHub repository paulnsorensen/easy-cheese (18 stars, last pushed today), licensed MIT. It adds 127 tokens to every session and 3,700 once invoked, about $0.0006 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 2026-08-30.

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