dumpclass

dumpclass is a command for coding agents from frankbolero/dotnet-dump-mcp. It costs 0 tokens per session (209 once invoked), scanned A, original, MIT.

A command for inspecting internal .NET type metadata, including an EEClass structure that describes a type inside the runtime.

In plain words
What is it for?
Use it while debugging .NET runtime behavior or examining a process or memory dump at a specific address.
Why use it?
It helps investigate how the .NET runtime represents a type when ordinary type information is not enough.

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/dumpclass
Clone the repo
git clone --depth 1 https://github.com/frankbolero/dotnet-dump-mcp

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 dumpclass

README.md
[![agentmods](https://agentmods.dev/badge/commands/frankbolero/dotnet-dump-mcp/dumpclass.svg)](https://agentmods.dev/commands/frankbolero/dotnet-dump-mcp/dumpclass)
Your own site
<a href="https://agentmods.dev/commands/frankbolero/dotnet-dump-mcp/dumpclass"><img src="https://agentmods.dev/badge/commands/frankbolero/dotnet-dump-mcp/dumpclass.svg" alt="Measured on agentmods" height="20"></a>
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 209 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 $0.00209
Opus 5 $0.00000 $0.00105
Sonnet 5 $0.00000 $0.00042
Haiku 4.5 $0.00000 $0.00021

Measured 4d ago against content hash 61c7cd5c454b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dumpclass 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 4d 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/dumpclass.md · 28 lines

What it actually says

dumpclass

Digs into .NET type metadata. Displays information about an EEClass structure.

Usage

dumpclass <address>

ClrMD Implementation

EEClass is less exposed in public ClrMD APIs than MethodTable (ClrType). Usually inspecting ClrType gives the necessary info.

using Microsoft.Diagnostics.Runtime;

// ... (Setup DataTarget and ClrRuntime)
ulong mt = 0x7FF...; // Assuming input is MethodTable, or we find it via object

ClrType type = runtime.GetTypeByMethodTable(mt);
if (type != null)
{
    Console.WriteLine($"Type: {type.Name}");
    Console.WriteLine($"BaseSize: {type.BaseSize}");
    // EEClass address might be internal or accessed via specific ClrMD versions/helpers
}

Link: ClrType.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. 4d ago First seen · 28 lines · 0 tokens per session scan A 61c7cd5c454b

Subscribe to this mod's changes

dumpclass is a command published in the GitHub repository frankbolero/dotnet-dump-mcp (12 stars, last pushed 9d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 209 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.