MCP Tool Reference Medium Risk

set_local_variable_type

Set the data type of a local variable

Part of the Ghidra MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

LaurieWired/GhidraMCP Write

WHEN AI AGENTS USE THIS TOOL

AI agents use set_local_variable_type to create or modify resources in Ghidra. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

WHY ENFORCE A POLICY ON SET_LOCAL_VARIABLE_TYPE

Without a policy, an AI agent could call set_local_variable_type repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Ghidra.

RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

ghidra.yaml 
tools:
  set_local_variable_type:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Ghidra policy for all 27 tools.

DETAILS

Tool Name

set_local_variable_type

Category

Write

MCP Server

Ghidra MCP Server

Risk Level

Medium

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SIMILAR WRITE TOOLS ON OTHER SERVERS

create_table Airtable
Create a new table with fields
update_table Airtable
Update a table's name or description
create_field Airtable
Add a new field to a table
update_field Airtable
Modify an existing field
create_record Airtable
Add a new record
update_record Airtable
Modify an existing record

RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the set_local_variable_type tool do?

Set the data type of a local variable. It is categorised as a Write tool in the Ghidra MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_local_variable_type?

Add a rule in your Intercept YAML policy under the tools section for set_local_variable_type. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Ghidra MCP server.

What risk level is set_local_variable_type?

set_local_variable_type is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_local_variable_type?

Yes. Add a rate_limit block to the set_local_variable_type rule in your Intercept 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 set_local_variable_type completely?

Set action: deny in the Intercept policy for set_local_variable_type. 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 set_local_variable_type?

set_local_variable_type is provided by the Ghidra MCP server (LaurieWired/GhidraMCP). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON GHIDRA

Open source. One binary. Zero dependencies.

VIEW ON GITHUB Full Ghidra policy →