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brkhrdt
by brkhrdt

get_buffer

Retrieve scrollback buffer from a PTY session using session ID, with optional line limit from end.

Instructions

Get the scrollback buffer from a PTY session.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
linesNoNumber of lines to return from end of buffer. Omit for full buffer.
session_idYesThe session ID
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. It does not disclose whether the operation is read-only, destructive, or requires specific permissions. For a read operation, basic transparency is missing.

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 lacks structure. It front-loads the purpose but does not detail parameters or behavior, making it minimally adequate.

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

Completeness3/5

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

Given low complexity and full schema coverage, the description is sufficient for basic use. However, it omits context like return format, behavior of the 'lines' parameter, and potential pitfalls (e.g., empty buffer).

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 clear parameter descriptions. The tool description adds no additional meaning beyond the schema, so baseline 3 applies.

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 ('Get') and the resource ('scrollback buffer from a PTY session'). It is specific and distinguishes from siblings like run_command or list_sessions, though it does not explicitly contrast with them.

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 on when to use this tool versus alternatives such as send_keys or start_session. The description does not mention prerequisites (e.g., session must be active) or when not to use it.

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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