save_translated_segments

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

With no annotations, the description carries the full burden. It discloses the accumulation behavior across calls, which is important. However, it does not mention error handling, validation, or what happens if session_dir is invalid, leaving some behavioral gaps.

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

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

The description is concise and well-structured: main purpose, accumulation behavior, sequencing instruction, then a clear Args list. Every sentence earns its place without redundancy.

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

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

With an output schema present, return values need not be described. The description covers purpose, parameter origins, and workflow sequencing within the sibling tool context. It lacks edge-case behavior, but is complete for the primary use case.

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

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

Schema description coverage is 0%, so the description compensates by explaining both parameters: session_dir as the path from extract_segments and segments_json as a JSON array string of translated segments. This adds meaning beyond bare names, though format details are not deeply specified.

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

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

The description clearly states the tool's purpose: 'Saves translated segments to the session' with a specific verb and resource. It also distinguishes itself from siblings by describing the accumulation behavior and the call to assemble_translated.

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

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

The description provides explicit usage guidance: segments accumulate across multiple calls, and assemble_translated should be called after all segments are saved. It also explains that session_dir comes from extract_segments, giving a clear workflow context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.