Debug Helper

Debug Helper is a skill for Claude Code, Codex from udapy/rust-agentic-skills. It costs 9 tokens per session (216 once invoked), scanned A, original, MIT.

A method for finding runtime panics, logic errors, and unexpected behavior in Rust programs. Runtime errors happen while a program runs, rather than while it is being compiled.

In plain words
What is it for?
It is for writing failing tests, creating minimal reproducible examples, using binary-search-style debugging and `dbg!()` output, and removing temporary debugging code after the fix.
Why use it?
It turns unclear failures into a reproducible test or minimal example, then narrows the problem to the code that causes it.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for writing failing tests, creating minimal reproducible examples, using binary-search-style debugging and dbg!() output, and removing temporary debugging code after the fix.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/udapy/rust-agentic-skills/general-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 udapy/rust-agentic-skills --skill general-debug
Clone the repo
git clone --depth 1 https://github.com/udapy/rust-agentic-skills

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 Debug Helper

README.md
[![agentmods](https://agentmods.dev/badge/skills/udapy/rust-agentic-skills/general-debug/github.svg)](https://agentmods.dev/skills/udapy/rust-agentic-skills/general-debug)
Your own site
<a href="https://agentmods.dev/skills/udapy/rust-agentic-skills/general-debug"><img src="https://agentmods.dev/badge/skills/udapy/rust-agentic-skills/general-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 Debug Helper

Your own site · 80×15
<a href="https://agentmods.dev/skills/udapy/rust-agentic-skills/general-debug"><img src="https://agentmods.dev/badge/skills/udapy/rust-agentic-skills/general-debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 216 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 original 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 $0.00009 $0.00216
Opus 5.5 $0.00004 $0.00086
Sonnet 5.5 $0.00002 $0.00043
Haiku 4.5 $0.00001 $0.00022

Measured 1mo ago against content hash ac2f751f21ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Debug Helper 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.

skills/general-debug/SKILL.md · 30 lines

What it actually says

<role_definition> You are the Debug Helper, the detective of the Rust Guild. Your trigger: Runtime panics, logic errors, or unexpected behavior (not compiler errors). </role_definition>

  1. Reproduction:
    • Can you write a test case that fails?
    • If not, create a minimal reproducible example (MRE).
  2. Isolation:
    • Use "Wolf Fence" debugging: Binary search the code to find the point of failure.
    • Insert dbg!() macros (better than println!).
  3. Resolution: - Once isolated, fix the logic. - Remove all dbg!() calls before final commit.
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. 1mo ago First seen · 30 lines · 9 tokens per session scan A ac2f751f21ee

Subscribe to this mod's changes

Debug Helper is a skill published in the GitHub repository udapy/rust-agentic-skills (56 stars, last pushed 8mo ago), licensed MIT. It adds 9 tokens to every session and 216 once invoked, about $0.0000 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.

Related

Other skills, from other repositories

cpp-sanitizers

Use in C/C++ projects for crashes, hangs, UB, data races, memory errors. ASan/UBSan/TSan runtime checks. Build sanitizer config separately.

Redtropig/harness-anchor · 40 tokens

rust-performance

Rust performance workflow: benchmark and profile first, identify hotspots, reduce allocations and contention, improve data layout, tune release profiles, and verify gains with repeatable evidence. Use only after you have a real Rust performance symptom, regression, or hotspot in .rs code.

AeonDave/malskill · 57 tokens

gdb

Debug and trace C/C++/Rust programs with the GNU Debugger (GDB) without blocking the agent. Use when you need to set tracepoints, inspect variables, or monitor a running process while staying responsive to the user.

betab0t/skills · 50 tokens

rust-concurrency

Use when implementing or debugging Rust threads, Send/Sync bounds, Arc and synchronization, channels, Tokio async tasks, cancellation, graceful shutdown, backpressure, deadlocks, or choosing Rayon for CPU-bound parallel work.

Lu1sDV/skillsmd · 47 tokens

rust-idiomatic

Use when writing or reviewing ordinary Rust, fixing move/borrow/lifetime errors, handling Option or Result, choosing standard-library string/iterator/I/O APIs, or configuring Cargo workspaces, rustfmt, Clippy, and rust-analyzer. Covers UTF-8, partial moves, allocation semantics, and production error propagation; use…

Lu1sDV/skillsmd · 83 tokens

rust-macros

Use when writing or debugging Rust macrorules! matchers, repetitions, hygiene, $crate exports, edition-dependent fragments, or procedural derive, attribute, and function-like macros using syn and quote; includes expansion and diagnostic tests.

Lu1sDV/skillsmd · 50 tokens