reconstruct-types

reconstruct-types is a command for Claude Code from marcosd4h/DeepExtractRuntime. It costs 0 tokens per session (1,255 once invoked), scanned A, original, MIT.

A command that rebuilds C and C++ structure or class definitions from a compiled module's decompiled code. It creates C++ header files and marks how confident it is in each field.

In plain words
What is it for?
Reconstruct types from a module such as a Windows DLL, rebuild a named class, include COM interfaces, and check the result against assembly code.
Why use it?
It helps recover usable type definitions when the original source code is unavailable.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md). Also seen: reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python .claude/agents/type-reconstructor/scripts/reconstruct_all.py <db_path> --class <ClassName> --json.

Good fit Reconstruct types from a module such as a Windows DLL, rebuild a named class, include COM interfaces, and check the result against assembly code.

Compare 6 commands from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/marcosd4h/DeepExtractRuntime
agentmods
npx agentmods add commands/marcosd4h/deepextractruntime/reconstruct-types

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 reconstruct-types

README.md
[![agentmods](https://agentmods.dev/badge/commands/marcosd4h/deepextractruntime/reconstruct-types/github.svg)](https://agentmods.dev/commands/marcosd4h/deepextractruntime/reconstruct-types)
Your own site
<a href="https://agentmods.dev/commands/marcosd4h/deepextractruntime/reconstruct-types"><img src="https://agentmods.dev/badge/commands/marcosd4h/deepextractruntime/reconstruct-types/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 reconstruct-types

Your own site · 80×15
<a href="https://agentmods.dev/commands/marcosd4h/deepextractruntime/reconstruct-types"><img src="https://agentmods.dev/badge/commands/marcosd4h/deepextractruntime/reconstruct-types.svg" alt="Reviewed on agentmods" width="80" 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 1,255 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 $0.00000 $0.01255
Opus 5.5 $0.00000 $0.00502
Sonnet 5.5 $0.00000 $0.00251
Haiku 4.5 $0.00000 $0.00126

Measured 1mo ago against content hash 3d954d2c2223, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reconstruct-types 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.

commands/reconstruct-types.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reconstruct Types

Overview

Reconstruct C/C++ struct and class definitions from a module's decompiled code by scanning memory access patterns, vtable contexts, and mangled names across all functions. Generates compilable C++ header files with per-field confidence annotations.

The text after /reconstruct-types specifies a module and optionally a class name:

  • /reconstruct-types appinfo.dll -- reconstruct all types in the module
  • /reconstruct-types appinfo.dll CSecurityDescriptor -- reconstruct a specific class
  • /reconstruct-types appinfo.dll --include-com -- include COM interface reconstruction
  • /reconstruct-types appinfo.dll --validate -- validate generated header against assembly

IMPORTANT: Execution Model

This is an execute-immediately command. Do NOT present anything for user confirmation. Run and write the final reconstructed types straight to the chat as your response. The user expects to see the completed output.

Workspace Protocol

This command uses the type-reconstructor agent's reconstruct_all.py pipeline, plus optional validation:

  1. Create .claude/workspace/<module>_reconstruct_types_<timestamp>/.
  2. Pass --workspace-dir <run_dir> and --workspace-step reconstruct to the reconstruct_all.py invocation.
  3. Keep only summary output in context; read full intermediate data from <run_dir>/reconstruct/results.json when presenting results.
  4. Use <run_dir>/manifest.json to track completed/failed steps.

Execution Context

IMPORTANT: Any inline Python that imports helpers.* must run with cd <workspace>/.claude (so the .claude/ directory is on sys.path), not from the workspace root. Script invocations like python .claude/skills/.../script.py can be run from the workspace root because those scripts manage their own path setup.

Steps

Step 0: Preflight Validation

Validate arguments using helpers.command_validation.validate_command_args("reconstruct-types", {"module": "<module>"}). If validation fails, report the errors and stop. On success, use result.resolved["db_path"] for subsequent script calls.

Read the full file on GitHub · 103 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. 1mo ago First seen · 103 lines · 0 tokens per session scan A 3d954d2c2223

Subscribe to this mod's changes

reconstruct-types is a command published in the GitHub repository marcosd4h/DeepExtractRuntime (21 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,255 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.