native-runtime-debug

native-runtime-debug is a skill for Claude Code, Codex from SLP-DEV1/qwen-dap-mcp. It costs 95 tokens per session (5,021 once invoked), scanned A, original, Apache-2.0.

A debugging workflow for native C and C++ programs using debugger evidence to investigate crashes, hangs, deadlocks, unexpected values, and crash dumps.

In plain words
What is it for?
Use it to diagnose fatal crashes, stopped processes, lock waits, differences between good and failing runs, or bounded traces showing where a value changed.
Why use it?
It replaces guesswork from logs with structured inspection of what the running program or dump was doing.

Skill for Claude CodeCodex

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

Good fit Use it to diagnose fatal crashes, stopped processes, lock waits, differences between good and failing runs, or bounded traces showing where a value changed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/slp-dev1/qwen-dap-mcp/native-runtime-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 SLP-DEV1/qwen-dap-mcp --skill native-runtime-debug
Clone the repo
git clone --depth 1 https://github.com/SLP-DEV1/qwen-dap-mcp

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 native-runtime-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/slp-dev1/qwen-dap-mcp/native-runtime-debug/github.svg)](https://agentmods.dev/skills/slp-dev1/qwen-dap-mcp/native-runtime-debug)
Your own site
<a href="https://agentmods.dev/skills/slp-dev1/qwen-dap-mcp/native-runtime-debug"><img src="https://agentmods.dev/badge/skills/slp-dev1/qwen-dap-mcp/native-runtime-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 native-runtime-debug

Your own site · 80×15
<a href="https://agentmods.dev/skills/slp-dev1/qwen-dap-mcp/native-runtime-debug"><img src="https://agentmods.dev/badge/skills/slp-dev1/qwen-dap-mcp/native-runtime-debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,021 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 $0.00095 $0.05021
Opus 5.5 $0.00038 $0.02008
Sonnet 5.5 $0.00019 $0.01004
Haiku 4.5 $0.00010 $0.00502

Measured 1mo ago against content hash cb48a29ddf82, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

native-runtime-debug 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.

.qwen/skills/native-runtime-debug/SKILL.md · 483 lines

How it starts

The opening of the file, as written. The whole thing — 483 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Native Runtime Debugging

Use qwen-dap-mcp to reason from structured debugger evidence instead of guessing from logs. This skill is for software, crash artifacts, and authorized local targets the user owns or is permitted to debug.

Choose the high-level workflow first

Use debug_this_crash for fatal exceptions/signals, invalid memory accesses, aborts, and crash verification. Use debug_this_hang when the process appears stuck, deadlocked, waiting forever, or spinning without useful forward progress.

When a known-good reproduction and a failing/changed reproduction can be stopped at comparable runtime states, use debug_compare_runs before guessing from source. If that comparison identifies a suspicious debugger-visible value and the live target is safe to resume, use debug_trace_value to gather bounded temporal writer evidence.

Do not use a crash-only interpretation for a hang snapshot and do not turn a hang heuristic, static runtime difference, or observed writer into certainty.

Runtime debugging v2

Prefer debug_adaptive_evidence when the required evidence depth is unknown and a cheap first pass may be sufficient. Use the richer debug_runtime_report directly when you already need modules, disassembly, crash-family fingerprints, API argument analysis, stack-integrity evidence, competing hypotheses, and the breakpoint plan.

Use debug_time_travel for record/replay work. record executes only the explicit program under rr with literal argv and no shell; replay-plan returns a loopback GDB handoff; replay-start/status/stop manage only that fixed loopback rr process and can optionally use the hardened GDB attach path. Reverse execution still requires an adapter that advertises reverse support.

Use debug_trace_lifetime for suspected stale object ownership or use-after-free. Prefer sanitizer allocation/free provenance over poison patterns, and remember that an observed writer can propagate an already-invalid pointer.

Use debug_thread_timeline when one hang snapshot cannot distinguish starvation, livelock, lock contention, or changing progress. Only call a lock cycle proven when the tool returns lockGraph.cycleProven=true; generic waits without explicit owner thread IDs remain heuristic.

Read the full file on GitHub · 483 lines

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.

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 Changed · +36 lines cb48a29ddf82
  2. 1mo ago First seen · 447 lines · 95 tokens per session scan A 4af7f4ed7e4e

Subscribe to this mod's changes

native-runtime-debug is a skill published in the GitHub repository SLP-DEV1/qwen-dap-mcp (3 stars, last pushed 6d ago), licensed Apache-2.0. It adds 95 tokens to every session and 5,021 once invoked, about $0.0004 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 2026-08-31.

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