Borrowing it
Nothing to install: this file belongs to ivfarias/ceo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ivfarias/ceo/main/.ai/skills/systematic-debugging/SKILL.mdgit clone --depth 1 https://github.com/ivfarias/ceoWrote 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.
[](https://agentmods.dev/skills/ivfarias/ceo/systematic-debugging)<a href="https://agentmods.dev/skills/ivfarias/ceo/systematic-debugging"><img src="https://agentmods.dev/badge/skills/ivfarias/ceo/systematic-debugging/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.
<a href="https://agentmods.dev/skills/ivfarias/ceo/systematic-debugging"><img src="https://agentmods.dev/badge/skills/ivfarias/ceo/systematic-debugging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00021 | $0.02287 |
| Opus 5.5 | $0.00008 | $0.00915 |
| Sonnet 5.5 | $0.00004 | $0.00457 |
| Haiku 4.5 | $0.00002 | $0.00229 |
Grade A, and why
systematic-debugging 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 1mo 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.
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.
What ships with it
10 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.
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.
- 1mo ago First seen · 297 lines · 21 tokens per session scan A bb462cc198f9
systematic-debugging is a skill published in the GitHub repository ivfarias/ceo (25 stars, last pushed 7mo ago), with no licence file. It adds 21 tokens to every session and 2,287 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 2026-08-30.
Other skills, from other repositories
debug-through-player-chat
A troubleshooting guide for live game runs that uses player chat to find out what the player currently sees and believes. It helps separate a reasoning mistake from a wrong game state or an execution problem.
fitness-functions
Use when designing architectural fitness functions as GC rules — periodic checks that verify system-wide properties like layer boundaries, coupling trends, and complexity hotspots, complementing per-change constraints with weekly architectural health monitoring.
oracle-sql-diagnosis
Use when the answer needs Oracle SQL evidence (read-only), or when Java code touches the database - to prove behavior on the data and assess the impact of the Java change.
springboot-ticket-diagnosis
Use to diagnose a support ticket or user-visible behavior in a Spring Boot service and prove whether it is code, data, config, contract or expected behavior.
feedback
Skill "feedback" from Hmbown/Codewhale, covering feedback, when to use, setup, workflow and non-goals.
windbg-user-heap-corruption-investigation
Use when an app, service, or user-mode driver host heap fails or Application Verifier detects corruption; inspect history and bounds. Not for kernel pool corruption or ordinary OOM.