distill: Skill for Claude Code

.claude/skills/gitnexus/gitnexus-debugging/SKILL.md

gitnexus-debugging is a skill for Claude Code from 5queezer/distill. It costs 46 tokens per session (769 once invoked), scanned A, a copy of gitnexus-debugging, MIT.

A debugging workflow that uses a codebase map to trace errors through related functions and execution paths. Debugging means finding why software fails or behaves unexpectedly.

In plain words
What is it for?
Use it to investigate failures, unexpected behavior, or server errors by finding related code, examining callers and callees, tracing processes, and confirming the cause in source files.
Why use it?
It helps locate the source of a bug by connecting an error or symptom to the code that calls it and the code it calls, instead of searching files without context.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is 5queezer/distill's own configuration. It tells Claude Code how to work on distill itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything distill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to 5queezer/distill. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/5queezer/distill/main/.claude/skills/gitnexus/gitnexus-debugging/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/5queezer/distill

Made for: Claude Code.

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 gitnexus-debugging

README.md
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Your own site
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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 gitnexus-debugging

Your own site · 80×15
<a href="https://agentmods.dev/skills/5queezer/distill/gitnexus-debugging"><img src="https://agentmods.dev/badge/skills/5queezer/distill/gitnexus-debugging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 769 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 81% copy Near-identical to another mod 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 $0.00046 $0.00769
Opus 5.5 $0.00018 $0.00308
Sonnet 5.5 $0.00009 $0.00154
Haiku 4.5 $0.00005 $0.00077

Measured 2mo ago against content hash 7346db1af79d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gitnexus-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 2mo 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.

Origin

This is a copy

81% identical to gitnexus-debugging — 190 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/gitnexus/gitnexus-debugging/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Debugging with GitNexus

When to Use

  • "Why is this function failing?"
  • "Trace where this error comes from"
  • "Who calls this method?"
  • "This endpoint returns 500"
  • Investigating bugs, errors, or unexpected behavior

Workflow

1. gitnexus_query({query: "<error or symptom>"})            → Find related execution flows
2. gitnexus_context({name: "<suspect>"})                    → See callers/callees/processes
3. READ gitnexus://repo/{name}/process/{name}                → Trace execution flow
4. gitnexus_cypher({query: "MATCH path..."})                 → Custom traces if needed

If "Index is stale" → run npx gitnexus analyze in terminal.

Checklist

- [ ] Understand the symptom (error message, unexpected behavior)
- [ ] gitnexus_query for error text or related code
- [ ] Identify the suspect function from returned processes
- [ ] gitnexus_context to see callers and callees
- [ ] Trace execution flow via process resource if applicable
- [ ] gitnexus_cypher for custom call chain traces if needed
- [ ] Read source files to confirm root cause

Debugging Patterns

Symptom GitNexus Approach
Error message gitnexus_query for error text → context on throw sites
Wrong return value context on the function → trace callees for data flow
Intermittent failure context → look for external calls, async deps
Performance issue context → find symbols with many callers (hot paths)
Recent regression detect_changes to see what your changes affect

Tools

gitnexus_query — find code related to error:

gitnexus_query({query: "payment validation error"})
→ Processes: CheckoutFlow, ErrorHandling
→ Symbols: validatePayment, handlePaymentError, PaymentException

gitnexus_context — full context for a suspect:

Read the full file on GitHub · 90 lines

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. 2mo ago First seen · 90 lines · 46 tokens per session scan A 7346db1af79d

Subscribe to this mod's changes

gitnexus-debugging is a skill published in the GitHub repository 5queezer/distill (1 stars, last pushed 6mo ago), licensed MIT. It adds 46 tokens to every session and 769 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 81% identical to gitnexus-debugging, differing in 190 lines, and is treated as a copy.

Related

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