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andsopwn

ida-fusion-mcp

by andsopwn

make_signature_for_range

Create a byte signature for an explicit address range to identify code patterns, with support for IDA, x64dbg, mask, or bitmask formats.

Instructions

Create a byte signature for an explicit address range.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
startYesStart address or name
endYesEnd address or name, exclusive
formatNoOutput format: 'ida', 'x64dbg', 'mask', or 'bitmask'
wildcard_operandsNoWildcard relocatable instruction operands
instance_idYesTarget IDA instance ID (required)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

With no annotations provided, the description must disclose behavioral traits. It does not mention whether the tool modifies the database, requires special permissions, or has side effects. The one-line description is insufficient for a creation tool.

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?

The description is very short and to the point, but it is not wasteful. It sacrifices depth for brevity; however, it could still be considered sufficiently concise for the purpose.

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?

Given the rich schema (100% parameter descriptions, output schema), the description is adequate. It covers the core purpose but could add more context about signature creation (e.g., typical output format).

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 coverage is 100%, so the baseline is 3. The description adds no additional meaning beyond the schema's parameter descriptions. It neither enhances nor detracts from the understanding of parameters.

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 clearly states the specific action: 'Create a byte signature for an explicit address range.' It distinguishes well from sibling tools like make_signature and make_signature_for_function by specifying the range aspect.

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?

The description implies usage for arbitrary address ranges but provides no explicit guidance on when to use this tool versus alternatives like make_signature or make_signature_for_function. No when-not scenarios are mentioned.

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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