Swift Concurrency 6 2
affaan-m/ECC
Swift 6.2 Approachable Concurrency — single-threaded by default, @concurrent for explicit background offloading, isolated conformances for main actor types.
Analyze concurrent iteration and view consistency guarantees
Apache-2.0Auto-check passed
Install Audit Iteration
$ npx skills add ben-manes/caffeine --skill audit-iteration -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ben-manes/caffeine audit-iteration --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/audit-iteration .claude/skills/audit-iteration && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .claude/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iterationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ben-manes/caffeine --skill audit-iteration -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ben-manes/caffeine audit-iteration --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/audit-iteration .agents/skills/audit-iteration && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .agents/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ben-manes/caffeine --skill audit-iteration -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ben-manes/caffeine audit-iteration --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/audit-iteration .cursor/skills/audit-iteration && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .cursor/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ben-manes/caffeine.git --path .claude/skills/audit-iteration--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ben-manes/caffeine --skill audit-iteration -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ben-manes/caffeine audit-iteration --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/audit-iteration .gemini/skills/audit-iteration && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .gemini/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ben-manes/caffeine audit-iterationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ben-manes/caffeine --skill audit-iteration -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/audit-iteration .github/skills/audit-iteration && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .github/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ben-manes/caffeine --skill audit-iteration -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ben-manes/caffeine audit-iteration --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ben-manes/caffeine.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/audit-iteration .opencode/skills/audit-iteration && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "audit-iteration" agent skill from https://github.com/ben-manes/caffeine/tree/master/.claude/skills/audit-iteration into .opencode/skills/audit-iteration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-iteration", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
audit-iteration- GitHub stars
- 18k
- Token cost
- ~369 tokens
- SKILL.md length
- 155 words
- Files
- 1
- Skills in repo
- 33
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Analyze concurrent iteration and view consistency guarantees
- Works in 4 steps: What consistency guarantee? (Snapshot?… → Can iteration observe → Can concurrent put/remove/compute cause… → …
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Audit Iteration is an agent skill from ben-manes/caffeine. Analyze concurrent iteration and view consistency guarantees
Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: A high performance caching library for Java. The licence is Apache-2.0.
Example prompts
- “/audit-iteration”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- What consistency guarantee? (Snapshot? Weakly consistent? Sequentially consistent?)
- Can iteration observe
- Can concurrent put/remove/compute cause the iterator to
- Does wrapping ConcurrentHashMap iterators introduce issues CHM wouldn't have?
What it can do on your machine
Read from SKILL.md and the folder at commit e972fb0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Audit Iteration loads about 369 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 155 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from ben-manes/caffeine at commit e972fb0, republished under its Apache-2.0 licence (© ben-manes). 155 words, ~369 tokens.
Download SKILL.mdSave it as
.claude/skills/audit-iteration/SKILL.md (or your agent's skills folder).- name
- audit-iteration
- description
- Analyze concurrent iteration and view consistency guarantees
- context
- fork
- agent
- auditor
- disable-model-invocation
- true
Analyze the concurrent iteration and view behavior of the cache.
Assume at least one view operation can observe inconsistent state under concurrent modification. If your analysis yields zero findings, re-examine expired-but-present entries and dead/retired node visibility — explain specifically why no user-observable inconsistency is possible.
View operations to analyze:
- asMap().entrySet/keySet/values() iteration
- asMap().forEach()
- asMap().size()
- asMap().containsValue()
- Snapshot operations (policy().eviction().hottest/coldest)
For each:
- What consistency guarantee? (Snapshot? Weakly consistent? Sequentially consistent?)
- Can iteration observe:
- A retired or dead node?
- An entry whose key/value has been garbage collected?
- An expired but not-yet-cleaned-up entry?
- A node with inconsistent key/value (key from one version, value from another)?
- Can concurrent put/remove/compute cause the iterator to:
- Skip an entry that existed for the entire iteration?
- Return the same entry twice?
- Throw ConcurrentModificationException?
- Does wrapping ConcurrentHashMap iterators introduce issues CHM wouldn't have?
For each issue: construct a concrete interleaving and state whether it violates the documented contract or is expected weakly-consistent behavior.
© ben-manes, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/audit-iteration of ben-manes/caffeine.
Open the folder on GitHubat commit e972fb0
Compare with similar skills
Audit Iteration next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Audit Iteration this skillben-manes/caffeine | 18k | — | ~369 | Automated safety check: Pass | Apache-2.0 | |
| Swift Concurrency 6 2affaan-m/ECC | 276k | 4 repos | ~2k | Automated safety check: Pass | MIT | |
| Iterative Retrievalaffaan-m/ECC | 276k | 7 repos | ~1.6k | Automated safety check: Pass | MIT | |
| Iterative Retrievalaffaan-m/ECC | 276k | 2 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Iterative Retrievalaffaan-m/ECC | 276k | 2 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Iterative Retrievalaffaan-m/ECC | 276k | 1 repos | ~1.1k | Automated safety check: Pass | MIT |
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サブエージェントのコンテキスト問題を解決するために、コンテキスト取得を段階的に洗練するパターン. An agent skill from affaan-m/ECC.
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서브에이전트 컨텍스트 문제를 해결하기 위한 점진적 컨텍스트 검색 개선 패턴. An agent skill from affaan-m/ECC.
Iterative Retrieval
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逐步优化上下文检索以解决子代理上下文问题的模式
Swift Concurrency 6 2
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Swift 6.2 可接近的并发性 — 默认单线程，@concurrent 用于显式后台卸载，隔离一致性用于主 actor 类型。
More from ben-manes/caffeine
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Runs controlled JMH experiments on the Caffeine cache to find shared contention and hot-path waste, then reviews correctness and returns a reviewable patch.
Git History Bug Audit
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Audits a module by walking its git history commit by commit, tracking unresolved issues forward, and reporting the ones that survive to HEAD as findings.
Adversarial Codebase Audit
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Runs a hostile review of the Caffeine Java caching library with parallel subagents that get no design docs, then challenges and consolidates their findings.
Caffeine Performance Audit
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Audits the Caffeine cache source for hot-path costs such as allocations, contention and memory layout, reporting only findings tied to specific lines.
Audit Sibling Divergence
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Compares code paths that should behave the same, such as sync and async cache methods, and requires a concrete scenario where the two observably disagree.
Climber Step Minimization
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Prices each step of the window climber algorithm by disabling it in turn, to find steps that no longer earn their keep and branches that no longer fire.
Questions about Audit Iteration
What does Audit Iteration do?
Analyze concurrent iteration and view consistency guarantees. Audit Iteration is an agent skill from ben-manes/caffeine.
How do I install Audit Iteration in Claude Code?
Run `npx skills add ben-manes/caffeine --skill audit-iteration -a claude-code`. Or copy the skill folder (.claude/skills/audit-iteration in ben-manes/caffeine) into .claude/skills/audit-iteration in your project. Claude Code loads it when a task matches its description.
How do I install Audit Iteration in Codex?
Run `npx skills add ben-manes/caffeine --skill audit-iteration -a codex`. Or copy the skill folder (.claude/skills/audit-iteration in ben-manes/caffeine) into .agents/skills/audit-iteration in your project. Codex loads it when a task matches its description.
Can I use Audit Iteration in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ben-manes/caffeine --skill audit-iteration -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/audit-iteration, .gemini/skills/audit-iteration, .github/skills/audit-iteration and .opencode/skills/audit-iteration in your project.
What does Audit Iteration need to run?
SKILL.md names no scripts, command-line tools or credentials: Audit Iteration is instructions for the agent only.
Does Audit Iteration access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Audit Iteration safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Audit Iteration use?
Audit Iteration is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Audit Iteration use?
About 369 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Audit Iteration?
Skills that share tags, products or a category with Audit Iteration: Swift Concurrency 6 2 (affaan-m/ECC, 276k stars), Iterative Retrieval (affaan-m/ECC, 276k stars), Iterative Retrieval (affaan-m/ECC, 276k stars) and Iterative Retrieval (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Audit Iteration?
ben-manes (a GitHub user) maintains it in ben-manes/caffeine, which has 17,881 GitHub stars. The repository holds 33 skills in this directory. The repository was last updated on October 9, 2026.
Source: ben-manes/caffeine on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.