develop-debug

develop-debug is a skill for Claude Code, Codex from developer239/michals-opencode-cookbook. It costs 147 tokens per session (12,663 once invoked), scanned A, original, no licence file.

A general debugging playbook for backend code, infrastructure, running programs, and solver or data-processing pipelines. Debugging means finding and correcting the cause of a failure.

In plain words
What is it for?
It is for narrowing failures by layers, using bisection, challenging an initial diagnosis, and verifying the complete end state after a fix.
Why use it?
It reduces guesswork by moving from symptoms to likely causes, testing cheap explanations first, and checking whether the final result is actually fixed.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for narrowing failures by layers, using bisection, challenging an initial diagnosis, and verifying the complete end state after a fix.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/developer239/michals-opencode-cookbook/develop-debug
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 developer239/michals-opencode-cookbook --skill develop-debug
Clone the repo
git clone --depth 1 https://github.com/developer239/michals-opencode-cookbook

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 develop-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/developer239/michals-opencode-cookbook/develop-debug/github.svg)](https://agentmods.dev/skills/developer239/michals-opencode-cookbook/develop-debug)
Your own site
<a href="https://agentmods.dev/skills/developer239/michals-opencode-cookbook/develop-debug"><img src="https://agentmods.dev/badge/skills/developer239/michals-opencode-cookbook/develop-debug/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 develop-debug

Your own site · 80×15
<a href="https://agentmods.dev/skills/developer239/michals-opencode-cookbook/develop-debug"><img src="https://agentmods.dev/badge/skills/developer239/michals-opencode-cookbook/develop-debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 147 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 12,663 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00147 $0.12663
Opus 5.5 $0.00059 $0.05065
Sonnet 5.5 $0.00029 $0.02533
Haiku 4.5 $0.00015 $0.01266

Measured 7d ago against content hash 06c2b59909b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

develop-debug 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 7d 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.

| Inspect HTTP requests/responses | `curl -v`, `mitmproxy`, `tcpdump` |
src/skills/develop-debug/SKILL.md · 487 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. 7d ago First seen · 487 lines · 147 tokens per session scan A 06c2b59909b8

Subscribe to this mod's changes

develop-debug is a skill published in the GitHub repository developer239/michals-opencode-cookbook (1 stars, last pushed 7d ago), with no licence file. It adds 147 tokens to every session and 12,663 once invoked, about $0.0006 per session on Opus 5.5. 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 2026-10-10.

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