dumpstack

A command for inspecting the call stacks of threads in a .NET process or crash dump, including native stack frames. A call stack shows the functions a thread is currently running through.

In plain words
What is it for?
Use it to inspect thread stacks and identify the code paths active at the time of a dump.
Why use it?
It helps you see where a thread is running when diagnosing a hang, crash, or other runtime problem. It can show native frames that managed-stack tools may not include.

Command

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.

agentmods
npx agentmods add commands/frankbolero/dotnet-dump-mcp/dumpstack
Clone the repo
git clone --depth 1 https://github.com/frankbolero/dotnet-dump-mcp
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 231 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00231
Opus 5 $0.00000 $0.00115
Sonnet 5 $0.00000 $0.00046
Haiku 4.5 $0.00000 $0.00023

Measured 2d ago against content hash f5ca303abecc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dumpstack 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 2d 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.

docs/commands/dumpstack.md · 33 lines

What it actually says

dumpstack

Helps examine thread call stacks. While clrstack is more commonly used for managed call stacks, dumpstack can also be used to inspect stack frames, including native ones.

Usage

dumpstack [options]

Example

> dumpstack

ClrMD Implementation

ClrMD primarily focuses on managed stack traces via ClrThread.EnumerateStackTrace(). For purely native stacks, ClrMD relies on the underlying DataTarget and platform-specific debugging APIs, but the core convenience method is for managed frames.

using Microsoft.Diagnostics.Runtime;

// ... (Setup DataTarget and ClrRuntime)

foreach (ClrThread thread in runtime.Threads)
{
    foreach (ClrStackFrame frame in thread.EnumerateStackTrace())
    {
         // frame.Kind can distinguish between ManagedMethod, Internal, etc.
         Console.WriteLine($"{frame.Kind} - {frame}");
    }
}

Link: ClrStackFrame.cs

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. 2d ago First seen · 33 lines · 0 tokens per session scan A f5ca303abecc

Subscribe to this mod's changes

dumpstack is a command published in the GitHub repository frankbolero/dotnet-dump-mcp (12 stars, last pushed 7d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 231 tokens. 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.