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andsopwn

ida-fusion-mcp

by andsopwn

disasm

Disassemble a function at a specified address into assembly instructions, with configurable instruction limits and offset, for reverse engineering tasks.

Instructions

Disassemble function to assembly instructions

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
addrYesFunction address to disassemble
max_instructionsNoMax instructions per function (default: 5000, max: 50000)
offsetNoSkip first N instructions (default: 0)
include_totalNoCompute total instruction count (default: false)
instance_idYesTarget IDA instance ID (required)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations are absent, so the description carries the full burden. It states the core action but does not disclose side effects, constraints, or processing details beyond the schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence is efficient and gets the point across. Could add a bit more context without being verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Describes the essential function for a tool with output schema. With 5 parameters, the description could be slightly richer but is functionally complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, and the description adds no additional meaning beyond the schema's parameter descriptions. Baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb-resource pair ('Disassemble function to assembly instructions') and clearly distinguishes from siblings like decompile and analyze_function.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool vs alternatives. The purpose is implied but lacks when-to-use or when-not-to-use context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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