insert_lines

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

With no annotations provided, the description carries the full burden. It discloses the append fallback and default project behavior, adding useful context. However, it does not mention what happens if the page does not exist, how duplicate line matches are handled, or any permission/error conditions. This is adequate but not exhaustive.

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 two sentences, succinct, and front-loaded with the core function. No unnecessary wording or repetition. Every word contributes to understanding the tool.

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?

The description handles the core insert behavior and fallback logic. It does not cover edge cases like missing pages or ambiguous target lines, but given the schema already documents all parameters and there is no output schema, it is reasonably complete for the tool's complexity.

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 100%, so the description adds minimal value beyond what the schema already states. It repeats the default project and append behavior, which are also in the schema. No additional parameter insights are provided, so baseline 3 is appropriate.

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 action (insert text after a specified line) and resource (Scrapbox page on cosense). It distinguishes from siblings like edit_lines and delete_lines by focusing on insertion. The verb is specific and the target is unambiguous.

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 implies when to use the tool: when you need to insert new text after a specific line, with a fallback to appending if not found. It does not explicitly mention alternatives or when not to use it, but the wording provides clear context for typical usage.

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