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laszlopere

mcp-tmux

by laszlopere

tmux_select_window

Select a tmux window by its target identifier (e.g., 'mysess:2') to bring it into focus as the active window.

Instructions

Make a window the active one (e.g. window="mysess:2").

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
windowYes
targetNo
Behavior2/5

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

No annotations provided, so description carries full burden. It only states the action (make window active) but does not disclose side effects, error handling for missing windows, or whether it requires specific session context.

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?

Description is very concise (one sentence plus example). While efficient, it may be too brief; adding a bit more detail without verbosity would improve completeness.

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?

For a simple tool with no output schema and two undocumented parameters, the description lacks essential context such as return value, behavior on invalid input, and interaction with sessions.

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 coverage is 0%, but description only explains the 'window' parameter with an example. The 'target' parameter is completely undocumented, leaving a gap in understanding its purpose.

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

Purpose4/5

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

Description clearly states the tool makes a window active, with an example format. However, it does not differentiate from similar sibling tools like tmux_find_window or tmux_select_pane, which also deal with window selection.

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 explicit guidance on when to use this tool versus alternatives. Implied usage from 'make a window active' but no context on prerequisites or exclusions.

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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