find_new_since_snapshot

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It conveys a read-only diff operation through words like 'compare' and 'list', but it does not explicitly state that no playlist or snapshot data is modified, nor does it describe output shape or pagination behavior. The snapshot guide adds workflow context but not deeper behavioral transparency.

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 core behavior is front-loaded in a single compact sentence. The second part is a somewhat dense 'Snapshot guide' listing related tools, but it earns its place as navigation context for a large snapshot-tool family. Overall it is concise and not padded.

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 is complete enough for a read-only diff tool: it explains the operation, names the snapshot-family context, and the schema fully documents parameters and response_format. An output schema is absent, but the description's language and the response_format enum sufficiently convey the expected output modes.

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 schema already documents all four parameters. The description adds no parameter-level meaning beyond what the schema provides—'live playlist', 'snapshot', and 'added' are helpful framing but do not materially extend the 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?

The description clearly states a specific action ('Compare a live playlist against a snapshot') and a specific result ('list tracks added to the playlist since it was taken'). The phrase 'since it was taken' distinguishes it from removed-track tools, but it does not explicitly distinguish it from similarly named siblings like diff_since_snapshot.

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 gives clear context for when to use the tool: whenever you need to see tracks added to a live playlist relative to a baseline snapshot. It does not provide explicit exclusions or directly route to alternatives, though the appended 'Snapshot guide' does orient the agent within the snapshot-tool family.

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