Which integrations are available for this server?

Provides tools for structured patching of Mono / .NET assemblies, allowing method body replacement, string replacement, and atomic patch operations.

How do I use re-dotnet-patch?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@re-dotnet-patch nop GetSteamRegistryKey in PASystemInfoScanner.MainWindow" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

re-dotnet-patch

by Heretek-RE

Overview Schema Related Servers Score Discussions

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re-dotnet-patch

MCP server for structured patching of Mono / .NET assemblies.

Status

v2.8.0 — SKELETON. Tool contracts are final and pinned by tests (tests/test_re_dotnet_patch.py). The actual round-trip patcher backend (dnlib / Mono.Cecil / pythonnet) lands in v2.8.1.

Every mutating tool currently returns a structured {status: "not_implemented", reason, remediation, schema_for_replay} dict, so:

Downstream skills can target the tool names today.
Callers can serialize the operation as a patch descriptor for later replay once v2.8.1 lands.
The CHANGELOG entry for v2.8.0 can advertise the new server even though the backend is deferred.

Related MCP server: IDA Pro MCP

Tools

Tool	Status	What it does
`check_dnlib`	WARN (stub)	Probe for the future backend
`nop_method`	not_implemented	Replace a method body with a NOP-sled (return default)
`replace_method_body`	not_implemented	Replace a method body with caller-supplied IL bytes
`replace_string_ldstr`	not_implemented	Replace a specific `ldstr` operand within a method body
`patch_assembly`	not_implemented	Apply a list of operations atomically
`rollback_patch`	delegate	Delegate to `re-patch.restore_original`

Why a new server (not a helper in re-patch)?

re-patch is byte-splice only, pure-stdlib + mcp/pydantic. Adding a heavy dnlib / Mono.Cecil dep would bloat re-patch's surface for callers that only need a byte-splice. Per the v2.8.0 plan (approved 2026-06-07, LO decision), the Mono dnlib patcher ships as a new server to keep the dep boundary clean. Costs 1 server-count entry in .mcp.json (30 → 31).

What this server does NOT do

It does NOT NOP a method body today. v2.8.1 will. For v2.8.0, decompile the assembly with re-dotnet.decompile_type, edit the C# source by hand to stub the target method, then recompile.
It does NOT touch native / non-.NET binaries. Use re-patch for byte-splice; use re-vm-reverse for VM-protected native code.
It does NOT restore originals — call re-patch.restore_original directly. The rollback_patch tool delegates by-documentation.

Closing CD-3

The r03-stress run identified MonoLauncher::PASystemInfoScanner.MainWindow as the Mono Steam-gate target (see See the RE-AI output directory. for the full decompile). Once v2.8.1 lands the dnlib backend, nop_method("PASystemInfoScanner.MainWindow::GetSteamRegistryKey") will close CD-3 as a HIGH-confidence patch (currently DOC-ONLY).

License

MIT.

Install Server

license - permissive license

quality

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

Commit activity

Resources

GitHub Repository

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