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fuzzmind

fuzzmind-frida-mcp

by fuzzmind

frida_objc_bind_data

Bind arbitrary data to an Objective-C object at a specified memory address for later retrieval using Frida's ObjC API.

Instructions

Call ObjC.bind() and ObjC.getBoundData().

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetYes
object_addressYes
dataYes
Behavior2/5

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

With no annotations, the description carries the full burden. It only says it calls two ObjC functions but does not disclose side effects, authorization needs, or whether state is modified. This is insufficient for understanding behavior.

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

Conciseness3/5

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

The description is very short (one sentence), which could be good if it were information-dense, but it lacks substance. It is not overly verbose but sacrifices clarity for brevity.

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

Completeness1/5

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

Given the complexity (3 required params, no output schema, many sibling tools), the description is completely inadequate. It fails to explain the return value, how binding works, or how this tool relates to other ObjC tools. The agent cannot confidently use this tool.

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

Parameters1/5

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

Schema coverage is 0%, so the description must explain parameters. It only hints at the ObjC functions, without clarifying what 'target', 'object_address', or 'data' mean. The agent gets no added meaning beyond the schema types and names.

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

Purpose3/5

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

The description states it calls ObjC.bind() and ObjC.getBoundData(), implying it both binds data to an object and retrieves bound data. However, it is vague whether this is a combined operation or separate invocations. Among siblings like frida_objc_call_method and frida_objc_inspect_object, the purpose is somewhat clear but lacks specificity.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives. The description does not mention prerequisites, context, or exclusions, leaving the agent to guess.

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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