audit-observability

audit-observability is a skill for Claude Code from tomzx/agents. It costs 20 tokens per session (1,785 once invoked), scanned A, original, MIT.

A codebase and service audit that looks for missing logging, metrics, tracing, and alerting. These are ways to understand system behavior and detect production problems.

In plain words
What is it for?
Use it to inspect production services, rank observability gaps by risk, and review instrumentation for logs, measurements, request traces, and alerts.
Why use it?
It identifies gaps that can make failures difficult to diagnose or leave service degradation unnoticed.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: positional $N argument.

Good fit Use it to inspect production services, rank observability gaps by risk, and review instrumentation for logs, measurements, request traces, and alerts.

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

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 audit-observability

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/tomzx/agents/audit-observability"><img src="https://agentmods.dev/badge/skills/tomzx/agents/audit-observability.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,785 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00020 $0.01785
Opus 5.5 $0.00008 $0.00714
Sonnet 5.5 $0.00004 $0.00357
Haiku 4.5 $0.00002 $0.00178

Measured 22d ago against content hash 7298213b2fc1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

audit-observability 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 22d 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/audit-observability/SKILL.md · 182 lines

How it starts

The opening of the file, as written. The whole thing — 182 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Audit Observability

Scans the codebase and running services for missing or insufficient observability: logging, metrics, tracing, and alerting. Produces a gaps report ranked by risk so teams can prioritize adding instrumentation before issues arise in production.

Prerequisites

  • Working directory is the root of the repository
  • Optional: $1 — path or service name to scope the audit (defaults to .)
  • Access to the codebase to search for instrumentation patterns
  • Read .sdlc/context/architecture.md to understand the services and infrastructure

Observability Pillars

Pillar Purpose Examples
Logging Record discrete events for debugging Structured logs, error logs, audit logs
Metrics Quantitative measurements over time Request count, latency histogram, error rate
Tracing Follow a request across service boundaries Distributed trace IDs, span propagation
Alerting Notify on-call when conditions degrade PagerDuty, OpsGenie, Grafana alerts

Steps

  1. Read .sdlc/context/architecture.md to identify services, endpoints, databases, and external dependencies.

  2. Detect which observability libraries and frameworks are already in use:

    rg -n -i "(structlog|logging|logger|prometheus|datadog|opentelemetry|otel|jaeger|zipkin|sentry)" \
      -g '*.{py,ts,js,go}' ${1:-.} | head -40
    
  3. Audit logging coverage:

    • Are errors logged with context (request ID, user ID, stack trace)?
    • Are external service calls logged (request/response, latency, status)?
    • Are business-critical operations logged (auth events, data mutations, payments)?
    • Is structured logging used consistently?
    • Are log levels appropriate (not everything at INFO/DEBUG)?
    rg -n -i "(except|catch|error|raise|throw)" \
      -g '*.{py,ts,js,go}' ${1:-.} | rg -v "log|logger|sentry|capture" | head -30
    

    Flag error handlers that catch exceptions without logging them.

  4. Audit metrics coverage:

    • Are HTTP endpoints instrumented (request count, latency, error rate)?
    • Are database queries instrumented (query latency, connection pool usage)?
    • Are external service calls instrumented (call count, latency, error rate)?
    • Are business metrics tracked (orders placed, emails sent, jobs completed)?
    • Are resource metrics available (CPU, memory, disk, connections)?
    rg -n -i "(counter|histogram|gauge|summary|metric|observe|inc\(|time\()" \
      -g '*.{py,ts,js,go}' ${1:-.} | head -30
    

    Identify endpoints and services with no metrics instrumentation.

Read the full file on GitHub · 182 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. 22d ago Changed · +6 lines 7298213b2fc1
  2. 24d ago Changed bfcd7e8175e0
  3. 2mo ago First seen · 176 lines · 20 tokens per session scan A 344eb0e47849

Subscribe to this mod's changes

audit-observability is a skill published in the GitHub repository tomzx/agents (13 stars, last pushed yesterday), licensed MIT. It adds 20 tokens to every session and 1,785 once invoked, about $0.0001 per session on Opus 5.5. 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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