execute_assembly

Load and execute .NET assembly in memory. Auto-selects client if only one connected.

SERVERClaude C2 SOURCE0xyg3n/claude-c2

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xyg3n-claude-c2/execute-assembly.md

WHAT IT DOES

What execute_assembly does on Claude C2

AI agents invoke execute_assembly to trigger actions in Claude C2. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why execute_assembly is rated High

This tool directly executes code (arbitrary .NET assemblies) in memory on remote systems. This is quintessentially an Execute category action - it triggers external operations (assembly execution) whose effects depend on the arguments (which assembly is loaded).

From the tool's definition Tool description states 'Load and execute .NET assembly in memory' - these are execution operations. The sibling tools on this server (amsi_bypass, bypassuac, defender_exclude, browser_creds, clipboard) indicate this server is designed for offensive…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs execute_assembly safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Claude C2, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For execute_assembly, this is the rule to start with:

execute_assembly Rate-limited

execute_assembly stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "execute_assembly": {
      "limits": [
        {
          "counter": "execute_assembly_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Claude C2, apply this rule, and every execute_assembly call is checked against it from then on.

FAQ

Questions about execute_assembly

What does the execute_assembly tool do? +

Load and execute .NET assembly in memory. Auto-selects client if only one connected. It is categorised as a Execute tool in the Claude C2 MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on execute_assembly? +

Register the Claude C2 MCP server in PolicyLayer and add a rule for execute_assembly: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude C2. Nothing to install.

What risk level is execute_assembly? +

execute_assembly is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit execute_assembly? +

Yes. Add a rate_limit block to the execute_assembly rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block execute_assembly completely? +

Set action: deny in the PolicyLayer policy for execute_assembly. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides execute_assembly? +

execute_assembly is provided by the Claude C2 MCP server (0xyg3n/claude-c2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Claude C2, and thousands of servers like it.

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All 94 Claude C2 tools → High-risk tools on this server →

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claude_execute on Claude Bridge →execute_test_case on Percepta MCP Server → All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →