audit-evidence

audit-evidence is a skill for Claude Code from Ohswedd/praxis. It costs 95 tokens per session (707 once invoked), scanned A, original, MIT.

A set of rules for evidence-based software audits. It tells reviewers to base findings and pass decisions on code they actually read and to cite file locations.

In plain words
What is it for?
Use it when reviewing, auditing, or verifying changes, especially when recording findings or verdicts.
Why use it?
It reduces unsupported conclusions and makes review results easier to verify.

Skill for Claude Code

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

Part of the praxis plugin — 15 skills, 8 commands, 13 agents, 5 hooks shipped together

Good fit Use it when reviewing, auditing, or verifying changes, especially when recording findings or verdicts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ohswedd/praxis/audit-evidence
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 Ohswedd/praxis --skill audit-evidence
Clone the repo
git clone --depth 1 https://github.com/Ohswedd/praxis

Made for: Claude Code.

Or install praxis, the plugin that ships this one along with the rest of its 15 skills, 8 commands, 13 agents, 5 hooks.

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 audit-evidence

README.md
[![agentmods](https://agentmods.dev/badge/skills/ohswedd/praxis/audit-evidence/github.svg)](https://agentmods.dev/skills/ohswedd/praxis/audit-evidence)
Your own site
<a href="https://agentmods.dev/skills/ohswedd/praxis/audit-evidence"><img src="https://agentmods.dev/badge/skills/ohswedd/praxis/audit-evidence/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 audit-evidence

Your own site · 80×15
<a href="https://agentmods.dev/skills/ohswedd/praxis/audit-evidence"><img src="https://agentmods.dev/badge/skills/ohswedd/praxis/audit-evidence.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 707 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 $0.00095 $0.00707
Opus 5 $0.00048 $0.00353
Sonnet 5 $0.00019 $0.00141
Haiku 4.5 $0.00010 $0.00071

Measured 8d ago against content hash fac794aa2fa5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

audit-evidence 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 8d 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.

plugins/praxis/skills/audit-evidence/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Audit evidence

An auditor's output is believed. That is its entire value, and its entire hazard: a verdict is acted on without being re-derived, so a claim that turns out on a second look to be wrong costs more than the review saved. A review that reports what it assumed is worse than no review at all.

The rule

Assert only what you read. Every finding, and every PASS, comes from a specific place in the code you actually opened.

  • Cite file:line for each finding, and for the code that decided a PASS on a concern that mattered. "Handled upstream" is a claim; src/api.py:88 is a citation.
  • Quote what the code says, not what the name suggests it says. A function called validate_input is evidence of nothing.
  • Read the callers before judging a contract. A signature change is safe or unsafe depending on who calls it, and that is a question with an answer, not an impression.
  • Never infer a file's contents from its path, its neighbours, or the diff. If you have not opened it, you do not know what is in it.

Downstream, report.py vertical records each verdict with its citations and refuses any that does not resolve: a file that does not exist, a line past the end of one. An auditor that read the code can name it for free. So this is not extra work, it is the work.

Say what you could not check

An auditor's honest limits are part of its verdict, not a weakness in it:

  • The scope you were given, and anything in it you did not reach (a file too large, a generated bundle, a path with no source in this repo).
  • Questions that need a runtime, a credential, or a service you do not have. Say what would answer them, so someone with access can.
  • A base commit you could not resolve. Report the gap; do not review the working tree alone and return PASS, which is how an audit of a committed branch comes back clean having read nothing.

PASS means "I examined this concern and found nothing". If you did not examine it, the answer is not PASS, whatever the pressure to produce a clean row.

Read the full file on GitHub · 56 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. 8d ago First seen · 56 lines · 95 tokens per session scan A fac794aa2fa5

Subscribe to this mod's changes

audit-evidence is a skill published in the GitHub repository Ohswedd/praxis (1 stars, last pushed 1mo ago), licensed MIT. It adds 95 tokens to every session and 707 once invoked, about $0.0005 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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