perf-debug

perf-debug is a skill for Claude Code, Codex from kodustech/kodus-ai. It costs 88 tokens per session (1,273 once invoked), scanned C, original, no licence file.

A workflow for tracing performance problems in the Kodus web app from the screen to the server and database.

In plain words
What is it for?
Measuring screens with browser automation, then inspecting the related application code, database indexes, and query plans.
Why use it?
It helps identify whether a slow, blank, or repeatedly loading screen is caused by the interface, an API query, or database work.

Skill for Claude CodeCodex

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/kodustech/kodus-ai/perf-debug
Any agent
npx skills add kodustech/kodus-ai --skill perf-debug
Clone the repo
git clone --depth 1 https://github.com/kodustech/kodus-ai

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 perf-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/kodustech/kodus-ai/perf-debug.svg)](https://agentmods.dev/skills/kodustech/kodus-ai/perf-debug)
Your own site
<a href="https://agentmods.dev/skills/kodustech/kodus-ai/perf-debug"><img src="https://agentmods.dev/badge/skills/kodustech/kodus-ai/perf-debug.svg" alt="Measured on agentmods" height="20"></a>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,273 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 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 $0.00088 $0.01273
Opus 5 $0.00044 $0.00636
Sonnet 5 $0.00018 $0.00255
Haiku 4.5 $0.00009 $0.00127

Measured 4d ago against content hash 81e1e3045262, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

perf-debug scanned grade C 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.

Harvests environment variableshighData exfiltration

Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.

- Postgres: `docker exec kodus_api printenv API_PG_DB_PASSWORD`, then
.claude/skills/perf-debug/SKILL.md · 82 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

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 · 82 lines · 88 tokens per session scan C 81e1e3045262

Subscribe to this mod's changes

perf-debug is a skill published in the GitHub repository kodustech/kodus-ai (1,349 stars, last pushed today), with no licence file. It adds 88 tokens to every session and 1,273 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it C with 1 finding (harvests environment variables). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories