service-debugging

service-debugging is a skill for Claude Code, Codex from c0x12c/ai-toolkit. It costs 35 tokens per session (946 once invoked), scanned A, original, no licence file.

A step-by-step guide for investigating problems in backend services, the software that handles APIs and application logic. It covers production incidents, API errors, and performance problems.

In plain words
What is it for?
Use it when a service breaks, an API returns errors, production has an incident, or an application is running slowly.
Why use it?
It gives you a structured way to find the cause of a failure instead of guessing or changing unrelated code.

Skill for Claude CodeCodex

Part of the ai-toolkit plugin — 9 skills, 1 agent shipped together

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.

agentmods
npx agentmods add skills/c0x12c/ai-toolkit/service-debugging
Any agent
npx skills add c0x12c/ai-toolkit --skill service-debugging
Clone the repo
git clone --depth 1 https://github.com/c0x12c/ai-toolkit

Made for: Claude Code, Codex.

Or install ai-toolkit, the plugin that ships this one along with the rest of its 9 skills, 1 agent.

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 service-debugging

README.md
[![agentmods](https://agentmods.dev/badge/skills/c0x12c/ai-toolkit/service-debugging.svg)](https://agentmods.dev/skills/c0x12c/ai-toolkit/service-debugging)
Your own site
<a href="https://agentmods.dev/skills/c0x12c/ai-toolkit/service-debugging"><img src="https://agentmods.dev/badge/skills/c0x12c/ai-toolkit/service-debugging.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 946 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00035 $0.00946
Opus 5 $0.00017 $0.00473
Sonnet 5 $0.00007 $0.00189
Haiku 4.5 $0.00003 $0.00095

Measured 4d ago against content hash 02148e2d56f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

service-debugging scanned grade A with 1 finding 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://localhost:8080/health | jq .
toolkit/skills/service-debugging/SKILL.md · 117 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file 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. 4d ago First seen · 117 lines · 35 tokens per session scan A 02148e2d56f1

Subscribe to this mod's changes

service-debugging is a skill published in the GitHub repository c0x12c/ai-toolkit (98 stars, last pushed 2mo ago), with no licence file. It adds 35 tokens to every session and 946 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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