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HLH2023
by HLH2023

terminal.attach

Attach to an existing terminal session using session ID, tmux session name, or provider to gain interactive control.

Instructions

Attach to an existing terminal session

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionIdNoSession ID (from terminal.start or terminal.list — use exact value, do not modify)
tmuxSessionNameNoExisting tmux session name
providerNoProvider used for attach
Behavior2/5

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

No annotations are provided, so the description must fully disclose behavioral traits. It only says 'Attach', which implies a connection, but does not specify whether it is a read-only operation, requires prior session existence, or what side effects occur (e.g., mutating session state).

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 a single sentence, which is concise but overly minimal. It lacks any structured information (e.g., use cases, prerequisites) that would help an AI agent, making it less effective despite its brevity.

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 lack of annotations and output schema, the description should provide more context about what attaching entails (e.g., whether it returns a stream, if events are automatically received). The current description is insufficient for an agent to understand the tool's behavior fully.

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%, with all three parameters having descriptive comments. The tool description itself adds no additional parameter semantics, so the baseline score of 3 is appropriate.

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?

The description clearly states the action ('Attach') and resource ('existing terminal session'), and it distinguishes from terminal.start. However, it does not elaborate on what 'attach' means operationally (e.g., gaining an interactive stream).

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?

The description provides no guidance on when to use this tool versus siblings like terminal.start or terminal.events. Given the many related tools, the absence of usage context is a significant gap.

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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