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

Annotations already flag destructiveHint=true and idempotentHint=true, so the safety profile is covered; the description adds real value by disclosing that a lift leaves a gap and that linked partners are NOT removed automatically, which is non-obvious side-effect behavior. It stops short of mentioning reversibility/undo or what happens to invalid ids, so it is strong 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?

Three short sentences with zero filler, and the most decision-relevant fact (lift leaves a gap) is front-loaded before the partner caveat and the sibling redirect.

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 4-param mutation tool with full schema coverage, no output schema, and annotations covering safety, the description supplies the missing behavioral context: gap behavior, linked-pair handling, and the alternative for gap-closing. Only return/confirmation behavior and failure handling are unaddressed.

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 coverage is 100%, so all four parameters are already documented, including the clipIds array. The description adds only one semantic detail beyond the schema — that the clipIds array must contain both ids of a linked pair — which is useful but marginal against a fully described schema.

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?

States a specific verb and resource ('Deletes clips') and immediately pins down the edit semantic ('lift — leaves a gap'), which is the exact distinction an agent needs. It is clearly separable from sibling ripple_delete_ranges without opening any schema.

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?

It names the alternative explicitly ('To close the gap too, use ripple_delete_ranges instead') and gives a concrete usage rule for linked pairs: pass both ids to delete a pair whole. Both the when and the when-not are present.

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