add_arrangement_locator

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

The description discloses that if a locator already exists at the exact time, it renames it rather than adding a duplicate. This is a key behavioral trait not captured by annotations (which are absent).

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: the first clearly states the action, and the second adds important behavioral nuance. No extraneous information, and it is front-loaded.

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?

For a simple tool with two parameters and no output schema, the description covers purpose, usage scenario, and edge case behavior. It is sufficient for an agent to understand and invoke the tool.

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?

The description adds context that 'time' is arrangement time and 'name' is the locator name, but does not specify units or constraints. With 0% schema coverage, more detail would be beneficial, but the description provides basic clarification.

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 adds a named locator (cue point) at arrangement time, and specifies it is useful for marking boundaries like verse/chorus. This distinguishes it from other sibling tools as no other tool adds locators.

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 usage for marking musical sections but does not explicitly state when to use this tool versus alternatives. No guidance on when not to use or comparison to other tools is provided.

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