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mrphrazer

Binary Ninja Headless MCP

by mrphrazer

type.parse_string

Parse a string representing a data type within a Binary Ninja session, making it available for analysis or modification.

Instructions

Parse a single type string.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYes
type_sourceYes
import_dependenciesNo
Behavior2/5

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It doesn't state side effects (e.g., whether parsing modifies state or is purely functional), error conditions, or whether it requires an open session. The description is too sparse to inform the agent about behavioral traits.

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

Conciseness2/5

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

While only two words, the description is under-specified rather than concise. It lacks front-loading of actionable information and provides no structure (e.g., no sentence distinguishing from siblings, no usage context). Those two words could be replaced or expanded with additional context.

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

Completeness2/5

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

Given the tool's complexity (3 params, 2 required), the absence of an output schema, and the large number of sibling tools, the description is woefully incomplete. It fails to inform about the return format, error behavior, or prerequisites such as an active session or specific binary analysis state.

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

Parameters2/5

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

Schema description coverage is 0%, meaning no parameter has a description in the schema. The description adds no parameter-level meaning; it doesn't clarify what session_id represents (e.g., an open file handle?), what type_source expects (e.g., raw string, file path?), or how import_dependencies affects behavior. The description fails to compensate for the complete lack of schema descriptions.

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

Purpose2/5

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

The description 'Parse a single type string' uses a vague verb 'parse' and the generic resource 'type string'. In the context of many sibling tools (e.g., type.parse_declarations, type.define_user, type.rename, type.import_library_type), it doesn't clarify what kind of type string (e.g., C type, IL type, user-defined) or what the output is. It fails to distinguish itself from type.parse_declarations or other type-related tools.

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

Usage Guidelines1/5

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

No guidance is given on when to use this tool versus alternatives like type.parse_declarations, type.define_user, type.import_library_type, or other tools. There are no examples, prerequisites, or exclusion criteria, leaving the agent with no basis for selection.

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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