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

Annotations already declare mutation (readOnlyHint=false) and non-destructiveness, but the description adds substantive context beyond them: the default confirmation-per-call flow (switchable), the fact that changes 'reach other people' and require user confirmation, and the API key/access prerequisite. These are real behavioral traits an agent needs, not restatements of structured data.

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 purpose is front-loaded, but the first two sentences are near-duplicates ('Change the price, title or release date...' then 'Changes the price, title or release date...'), and the 'Bandcamp:' prefix is repeated from the title. The redundancy costs space without adding information.

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 single-object mutation with no output schema, the definition covers the essentials: what changes, how to pass fields, confirmation behavior, audience impact, and auth requirements. Only the shape/side-effects of the returned result are left unstated, which is minor given the absence of an output schema.

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 the baseline is 3, but the description adds the partial-update semantic ('pass only the fields you want to change') which clarifies that unspecified fields are left unchanged — a meaning the schema alone does not state. It stops short of adding format details for any individual field.

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 set — 'Change the price, title or release date of an album or track' — which is unambiguous and distinct from sibling tools like bandcamp_update_merch_quantity or bandcamp_create_discount_code. An agent can identify the target object (a release) and the editable fields without opening the 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?

Gives clear operational context — 'Pass only the fields you want to change' and the default per-call confirmation — plus the 'edit button / Bulk Edit page' analogy for mental model. It does not, however, name a sibling alternative or state when not to use it, so exclusions are absent.

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