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

With readOnlyHint=true and openWorldHint=false already covering the safety profile, the description adds genuinely new behavioral detail: the auth requirement ('No API key needed') and exactly what the default summary view omits (per-word timings, beat arrays). That is useful return-shape disclosure beyond the annotations.

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 front-loaded sentences: purpose, auth note, then the view default and escalation. The section enumeration slightly overlaps the schema enum, but it earns its place by telling the agent what 'analysis' actually contains.

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?

There is no output schema, so the description bears the return-value burden and does a reasonable job by listing sections and noting what summary omits. It stops short of describing result size, pagination, or error behavior, but nothing needed to call it correctly is missing.

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 67%, with example_id pointing to list_example_songs and sections carrying an inline description. The description adds real meaning for the view enum by contrasting summary versus full content, though it says nothing about the sections filter behavior.

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 states a concrete verb and resource ('Full analysis of an example song') and enumerates the exact payload (Song DNA, beat grid, sections, best moments, lyrics, scores, story, shot plan). The 'example' qualifier implicitly separates it from the sibling analyze_song, though no sibling is named outright.

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 gives clear operational context: no API key is required, summary is the default, and view='full' is the escalation path. It does not, however, state when to prefer this over analyze_song or get_example_shot_plan, so exclusions/alternatives are absent.

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