backend-audit

backend-audit is a skill for Claude Code from ivegamsft/basecoat. It costs 82 tokens per session (507 once invoked), scanned A, original, MIT.

A review guide for backend code, meaning the server-side parts of an application that handle requests, data, and business rules. It examines quality, tests, performance, security, maintainability, logging, and database use.

In plain words
What is it for?
Auditing backend implementations, test coverage, performance bottlenecks, security risks, code structure, observability, database queries, dependencies, and supply-chain risks.
Why use it?
It helps identify defects, slow operations, insecure patterns, weak tests, poor error handling, and technical debt before they cause production problems.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Auditing backend implementations, test coverage, performance bottlenecks, security risks, code structure, observability, database queries, dependencies, and supply-chain risks.

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

Made for: Claude Code.

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 backend-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/ivegamsft/basecoat/backend-audit.svg)](https://agentmods.dev/skills/ivegamsft/basecoat/backend-audit)
Your own site
<a href="https://agentmods.dev/skills/ivegamsft/basecoat/backend-audit"><img src="https://agentmods.dev/badge/skills/ivegamsft/basecoat/backend-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 507 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 $0.00082 $0.00507
Opus 5 $0.00041 $0.00253
Sonnet 5 $0.00016 $0.00101
Haiku 4.5 $0.00008 $0.00051

Measured 3d ago against content hash c95a08fb0bca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

backend-audit 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 3d 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.

skills/backend-audit/SKILL.md · 55 lines

What it actually says

Backend Audit Skill

Comprehensive auditing of backend implementations, including code quality, testing coverage, performance characteristics, security practices, and maintainability.

USE FOR

  • Reviewing backend service implementations for code quality
  • Assessing test coverage and test strategy effectiveness
  • Identifying performance bottlenecks and optimization opportunities
  • Detecting security vulnerabilities and insecure patterns
  • Evaluating code organization, maintainability, and technical debt
  • Analyzing logging, error handling, and observability
  • Reviewing database interaction patterns and query performance
  • Assessing dependency health and supply chain risk
  • Creating structured audit findings with severity ratings

DO NOT USE FOR

  • Writing backend code from scratch (use backend-dev skill)
  • Designing database schemas (use related schema skills)
  • API contract design (use api-design skill)
  • Frontend code review (use appropriate frontend skills)
  • Infrastructure provisioning (use infrastructure-audit skill)
  • General code reviews (use code-review skill)

Audit Checklist

  • Code Quality: Complexity, duplication, naming, structure
  • Testing: Unit, integration, e2e coverage; test quality and maintainability
  • Security: Input validation, authentication, authorization, secrets management
  • Performance: Query efficiency, caching, connection pooling, async patterns
  • Error Handling: Exception handling, logging, graceful degradation
  • Dependencies: Versions, vulnerabilities, necessity, supply chain
  • Observability: Logging, tracing, metrics, debugging capability
  • Maintainability: Documentation, comments, architectural clarity
  • code-review — General code review for bugs and regressions
  • api-audit — API endpoint and contract auditing
  • backend-dev — Backend development and implementation
  • security — Security vulnerability assessment
Files

What ships with it

2 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. 3d ago First seen · 55 lines · 82 tokens per session scan A c95a08fb0bca

Subscribe to this mod's changes

backend-audit is a skill published in the GitHub repository ivegamsft/basecoat (4 stars, last pushed 3d ago), licensed MIT. It adds 82 tokens to every session and 507 once invoked, about $0.0004 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 2026-09-03.

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