A structured debugging workflow for bugs that remain after an initial fix, occur intermittently, or cause slower performance. It builds a repeatable feedback loop, tests competing explanations, adds instrumentation, and includes a regression test with the fix.

Use it when a bug survives the first attempt, appears only sometimes, or represents a performance regression.

It helps investigate difficult bugs systematically instead of repeatedly guessing at fixes.

debug — Skill for Codex by tony-adamson/groundwork

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 tony-adamson/groundwork --skill debug

Clone the repo

git clone --depth 1 https://github.com/tony-adamson/groundwork

Made for: 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tony-adamson/groundwork/debug/github.svg)](https://agentmods.dev/skills/tony-adamson/groundwork/debug)

Your own site

<a href="https://agentmods.dev/skills/tony-adamson/groundwork/debug"><img src="https://agentmods.dev/badge/skills/tony-adamson/groundwork/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/tony-adamson/groundwork/debug"><img src="https://agentmods.dev/badge/skills/tony-adamson/groundwork/debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,602 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.

Model	Per session	Once invoked
Fable 5.1	$0.00076	$0.01602
Opus 5.5	$0.00030	$0.00641
Sonnet 5.5	$0.00015	$0.00320
Haiku 4.5	$0.00008	$0.00160

Measured 1mo ago against content hash 2409c2cabd41, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

Makes network callslowCapability

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

2. curl / HTTP script against a running dev server.

codex/skills/debug/SKILL.md · 100 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

agents/openai.yaml 308 B

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.

1mo ago Changed 2409c2cabd41
2mo ago First seen · 100 lines · 76 tokens per session scan A b0ad55222a4b

Subscribe to this mod's changes

debug is a skill published in the GitHub repository tony-adamson/groundwork (3 stars, last pushed 10d ago), with no licence file. It adds 76 tokens to every session and 1,602 once invoked, about $0.0003 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 2026-08-31.

Claude Code Debugging LLM agent-skills ai-agents codex developer-tools

debug next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
debugtony-adamson/groundwork	Skill	3	10d ago	none	A	76	Codex
systematic-debuggingNousResearch/hermes-agent	Skill	261k	yesterday	MIT	A	16	Claude Code, Codex
triage-issuesgoogleapis/mcp-toolbox	Skill	17k	yesterday	Apache-2.0	A	164	Claude Code, Codex
agent-merge-conflict-arbiterNousResearch/hermes-agent	Skill	261k	yesterday	MIT	A	19	Claude Code, Codex
python-debugpyNousResearch/hermes-agent	Skill	261k	yesterday	MIT	B	17	Claude Code, Codex
sglang-diffusion-benchmark-profilesgl-project/sglang	Skill	39k	yesterday	Apache-2.0	A	26	Claude Code, Codex
resolve-handoffomnigent-ai/omnigent	Skill	11k	yesterday	Apache-2.0	A	23	Claude Code, Codex