audit-api-validation

audit-api-validation is a skill for Claude Code, Codex from danygiguere/audit-skills. It costs 32 tokens per session (105 once invoked), scanned A, original, MIT.

An input-checking checklist for public API endpoints—the parts of a service that receive requests from other software or users.

In plain words
What is it for?
Use it to review request validation, data-transfer objects, endpoint contracts, public types, bounds, and unknown-field handling.
Why use it?
It helps catch missing checks for required fields, invalid values, size limits, data types, and unexpected fields before they cause errors or unsafe behavior.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to review request validation, data-transfer objects, endpoint contracts, public types, bounds, and unknown-field handling.

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

Made for: Claude Code, Codex.

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-api-validation

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/danygiguere/audit-skills/audit-api-validation"><img src="https://agentmods.dev/badge/skills/danygiguere/audit-skills/audit-api-validation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 105 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 $0.00032 $0.00105
Opus 5 $0.00016 $0.00053
Sonnet 5 $0.00006 $0.00021
Haiku 4.5 $0.00003 $0.00011

Measured 9d ago against content hash 919f6c28aa8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

audit-api-validation 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 9d 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.

.agents/skills/audit-api-validation/SKILL.md · 10 lines

What it actually says

Read ../audit/references/input-api-dependency/api-contract-validation.md and apply its checklist to the code the user specified (or the current diff if none was given). Verify each candidate with ../audit/references/methodology/verify.md before reporting. Report findings with severity and file:line references.

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. 9d ago First seen · 10 lines · 32 tokens per session scan A 919f6c28aa8d

Subscribe to this mod's changes

audit-api-validation is a skill published in the GitHub repository danygiguere/audit-skills (5 stars, last pushed 2mo ago), licensed MIT. It adds 32 tokens to every session and 105 once invoked, about $0.0002 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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