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fuzzmind

fuzzmind-frida-mcp

by fuzzmind

frida_switch_session

Switch to a specified Frida session to target subsequent hooks and messages.

Instructions

Switch the active Frida session.

session_id: id of the session to activate (from frida_list_sessions). Subsequent session-based tool calls (hooks, messages) will operate on this session.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYes
Behavior4/5

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

No annotations are provided, but the description discloses the tool's effect: it changes which session subsequent operations target. This is the key behavioral trait, and it is clearly communicated. No contradictions or missing critical details.

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

Conciseness5/5

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

The description is two sentences, each bearing essential information. The first sentence states the tool's purpose, the second explains the parameter and its effect. No redundancy or unnecessary words.

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

Completeness5/5

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

Given the tool's simplicity (one required parameter, no output schema, no annotations), the description covers all necessary aspects: purpose, parameter meaning, prerequisite, and downstream implications. It is fully sufficient.

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

Parameters4/5

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

The single parameter session_id is explained with its source (frida_list_sessions) and purpose, which adds valuable meaning beyond the raw schema (0% coverage). The description compensates well for the lack of schema descriptions.

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 action (switch), the resource (active Frida session), and distinguishes from siblings by specifically mentioning session management. It also ties to the prerequisite sibling tool frida_list_sessions.

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

Usage Guidelines4/5

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

The description explains when to use the tool (to switch the active session) and provides context that subsequent calls depend on this selection. It implicitly advises using frida_list_sessions first to get the session_id, but does not explicitly state when not to use.

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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