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

With no annotations, the description carries the full burden and does so well: it discloses the access-control model (who may read), that non-entitled callers get a not-found response rather than an error, the required header X-Held-Record-Key, the credential type (token), a rate limit (120 reads/hour), cost (free), and a ?download=1 mode returning raw bytes with the fingerprint in a header. It also flags the side effect of recording reads.

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 purpose, access rules, credential, rate limit and download option are all present and mostly front-loaded, though the audience enumeration is a long run-on sentence and the first-person framing is somewhat ornamental. Dense but nearly every clause carries operational information, so waste is limited.

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?

With no annotations and no output schema, the description must supply behavioral and return context, and it does: it states what is returned (the document plus its fingerprint, and who-read records), the access model, credential, and rate limit. The only gap is the precise shape of a successful response, which is left to inference.

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 both id and accessKey are already documented, making 3 the baseline. The description adds only marginal value: it corroborates that the key comes from lodgement and can travel via the X-Held-Record-Key header, but does not resolve the schema's field name (accessKey) versus the header name, nor add format or constraint detail beyond 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 names a specific verb (read/returns) and resource (a held-record document lodged under PD8 §10) and clarifies it also 'records who read it'. An agent can tell it retrieves a lodged document rather than lodging or opening one. It does not, however, explicitly distinguish itself from the close sibling open_held_record, so it stops short of a 5.

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 extensive context on who is entitled to read the record and under what credential, which implies when a caller will succeed. But it never states when to prefer this tool over alternatives such as open_held_record or read_agent_record, and no explicit alternative is named. Usage must be inferred from the audience list.

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