Agent skill

Jev Audit

by OneWave-AI in OneWave-AI/claude-skills

Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model.

MITAuto-check passedAgent Workflows

Install Jev Audit

skills CLI
$ npx skills add OneWave-AI/claude-skills --skill jev-audit -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install OneWave-AI/claude-skills jev-audit --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/OneWave-AI/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/jev-audit .claude/skills/jev-audit && rm -rf skills-src

Use ~/.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/

Facts

Skill name
jev-audit
GitHub stars
336
Token cost
~1k tokens
SKILL.md length
554 words
Files
1
Skills in repo
69
Repo updated
First seen
Licence
MIT

At a glance

Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model.

  • Works in 5 steps: Find the candidates → Measure what it costs today → Price the swap → …
  • Asked to cut AI inference cost
  • SKILL.md covers 1. Find the candidates, 2. Measure what it costs today, 3. Price the swap and 4. Rank by payoff, not by ease, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Jev Audit is an agent skill from OneWave-AI/claude-skills. Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model. Use when asked to cut AI inference cost or latency, when scoping a performance engagement for a client, when reviewing an agent loop that feels slow, or when asked "where could we use Jev here". Produces a ranked table of candidates with measured latency and dollar deltas.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering Autonomous loops. The repository describes itself as: 200+ production-ready Claude Code skills for sales, marketing, design, engineering, and AI agent architecture. Built and maintained by OneWave AI. The licence is MIT.

When your agent uses it

  • Asked to cut AI inference cost
  • Scoping a performance engagement for a client
  • Reviewing an agent loop that feels slow
  • Asked where could we use Jev here

Example prompts

  • “where could we use Jev here”
  • “/jev-audit”

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Find the candidates
  2. Measure what it costs today
  3. Price the swap
  4. Rank by payoff, not by ease
  5. Write it up

What it can do on your machine

Read from SKILL.md and the folder at commit fc5b785. 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 (its code samples are bash).

    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

Jev Audit loads about 1k tokens when it runs. Until then it costs about 104 tokens; SKILL.md has 554 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~104
When it runs · the whole SKILL.md, loaded when a task matches
~1k

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 OneWave-AI/claude-skills at commit fc5b785, republished under its MIT licence (© OneWave-AI). 554 words, ~1,021 tokens.

Download SKILL.mdSave it as .claude/skills/jev-audit/SKILL.md (or your agent's skills folder).
name
jev-audit
description
Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model. Use when asked to cut AI inference cost or latency, when scoping a performance engagement for a client, when reviewing an agent loop that feels slow, or when asked "where could we use Jev here". Produces a ranked table of candidates with measured latency and dollar deltas.

Inference-cost audit

Most production LLM calls return a label, not prose — a route, a score, a yes/no, a category. Those calls pay for autoregressive generation they do not use. This audit finds them and prices the swap.

Deliverable: a ranked table of candidates with measured deltas. Sellable as a OneWave engagement; same shape as marketing-brain — a repeatable audit run per client.

1. Find the candidates

Search for LLM calls, then filter to the ones whose output is a label:

bash
grep -rnE "messages\.create|chat\.completions|generateText|\.invoke\(|anthropic\.|openai\." \
  --include=*.{ts,tsx,js,py} . | grep -v node_modules

A call is a candidate when all of these hold:

  • the prompt asks for one of a known, finite set of answers (≤255)
  • the caller parses the response — JSON.parse, a regex, an enum lookup, .trim()
  • nothing downstream shows a human the model's reasoning
  • it runs often, or a user waits on it

Strong signals in the prompt text: "respond with only", "return JSON", "classify", "choose one of", "rate from 1 to", "answer yes or no", "do not explain".

Disqualifiers: the output is shown to a user, is used as content, needs a citation or justification, or the answer set is open-ended.

2. Measure what it costs today

Do not estimate. Instrument:

  • calls/day — from logs or a counter, not a guess
  • p50 and p95 latency — p95 is what users feel
  • tokens in/out per call → current $/1k calls at the provider's list price
  • is anything blocked on it — a user, a page render, an agent's next step

3. Price the swap

Benchmark against a labelled set from that call's real traffic (see jev-eval). Never project from a vendor benchmark.

Reference numbers, measured on real records, 4 questions per record:

latencycost/1kaccuracy
Jev hosted399 ms$0.023matched Claude on a 15-record set
Von local174 ms$0.00matched only with well-written criteria
Claude Haiku 4.52,322 ms~$0.55baseline

Jev pricing: $0.042/MTok input, output free.

Show full SKILL.md (251 more words)Show less

4. Rank by payoff, not by ease

Rank each candidate on:

  1. volume × unit saving — the actual dollar figure
  2. is a human waiting — latency wins are worth more than cost wins on user-facing paths
  3. blast radius if wrong — a misrouted support ticket is cheap; a mis-scored transaction is not
  4. accuracy delta on the labelled set — anything below parity needs a confidence gate, and a gate has its own cost

Kill anything where volume is low. At a few hundred calls a day the savings round to zero and you have added a vendor.

5. Write it up

Per candidate: file and line, what it decides, calls/day, current latency and cost, projected latency and cost, measured accuracy delta, recommended gate, and a go / no-go with the reason.

Lead the summary with total projected monthly saving and the single biggest latency win.

Always include the limits: eval-set size, that Jev is early access with no SLA, and that a fallback to the existing call must stay wired.

Where this pays in the OneWave stack

  • Sage widget routing — build it. A visitor is watching; 400 ms vs 2.3 s is the whole difference.
  • RB2B visitor firehose — build it. The only stream with volume where 24x cheaper compounds.
  • Lead intake classification — measure first. Correct, but a handful of leads a day.
  • Lead watchdog — leave it. Nightly cron, nothing waits on it.

jev-eval produces the accuracy numbers this audit depends on. jev-integrate is the wiring workflow for anything that gets a go.

© OneWave-AI, MIT. 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 jev-audit of OneWave-AI/claude-skills.

Open the folder on GitHubat commit fc5b785

Compare with similar skills

Jev Audit 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.

Jev Audit compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Jev Audit this skillOneWave-AI/claude-skills336—~1kAutomated safety check: PassMIT
Show Me Your Work Decision Logcursor/plugins11k8 repos~1.6kAutomated safety check: PassNone
Autoresearch Iteration Loopuditgoenka/autoresearch6.5k1 repos~2kAutomated safety check: PassMIT
Install Loop Engineeringcobusgreyling/loop-engineering11k1 repos~648Automated safety check: PassMIT
LoopyForward-Future/loopy3.2k—~3.9kAutomated safety check: PassMIT
AI Performance Improvement Plantanweai/pua20k2 repos~6.9kAutomated safety check: PassMIT

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Categories

Questions about Jev Audit

What does Jev Audit do?

Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model. Jev Audit is an agent skill from OneWave-AI/claude-skills. Audit a codebase for LLM calls that are really classifications in disguise, then produce a costed swap plan for a System One model.

When should I use Jev Audit?

Jev Audit fits situations like: asked to cut AI inference cost; scoping a performance engagement for a client; reviewing an agent loop that feels slow; asked where could we use Jev here.

How do I install Jev Audit in Claude Code?

Run `npx skills add OneWave-AI/claude-skills --skill jev-audit -a claude-code`. Or copy the skill folder (jev-audit in OneWave-AI/claude-skills) into .claude/skills/jev-audit in your project. Claude Code loads it when a task matches its description.

How do I install Jev Audit in Codex?

Run `npx skills add OneWave-AI/claude-skills --skill jev-audit -a codex`. Or copy the skill folder (jev-audit in OneWave-AI/claude-skills) into .agents/skills/jev-audit in your project. Codex loads it when a task matches its description.

Can I use Jev Audit 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 OneWave-AI/claude-skills --skill jev-audit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/jev-audit, .gemini/skills/jev-audit, .github/skills/jev-audit and .opencode/skills/jev-audit in your project.

What does Jev Audit need to run?

SKILL.md names no scripts, command-line tools or credentials: Jev Audit is instructions for the agent only.

Does Jev Audit 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 Jev Audit 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 Jev Audit use?

Jev Audit is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Jev Audit use?

About 1k tokens (SKILL.md is roughly 4.1k 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 Jev Audit?

Skills that share tags, products or a category with Jev Audit: Show Me Your Work Decision Log (cursor/plugins, 11k stars), Autoresearch Iteration Loop (uditgoenka/autoresearch, 6.5k stars), Install Loop Engineering (cobusgreyling/loop-engineering, 11k stars) and Loopy (Forward-Future/loopy, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Jev Audit?

OneWave-AI (a GitHub organization) maintains it in OneWave-AI/claude-skills, which has 336 GitHub stars. The repository holds 69 skills in this directory. The repository was last updated on October 2, 2026.

Source: OneWave-AI/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.