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

With no annotations, the description carries the full burden and does a fair job: it discloses the return ordering (newest first), the record fields, and the pricing model (2 points per returned record). It does not mention pagination behavior or any auth/permission requirements, leaving a gap for an unannotated tool.

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?

Front-loaded with the core action and the identifier input, followed by a compact enumeration of returned fields and the cost note. The colon-list sentence is dense but every clause earns its place; only mild compression could improve it.

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?

No output schema exists, and the description compensates by enumerating the returned fields (date, act type, municipality, text/attachment presence) and the sort order. Cost is disclosed; the main remaining gap is pagination behavior, which is only partially implied by the 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 description coverage is 100%, so company, max_items and start_page are already documented in the schema (including the 80-per-page note). The description restates the accepted identifier formats but adds no new syntax or constraint detail beyond the schema, so the baseline of 3 applies.

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 (list) plus resource (Portugal company publications from the Registo Comercial portal) and enumerates the returned fields. It is clearly distinguishable from the sibling run_pt_companies / run_pt_companies_search tools, which cover company data rather than filings.

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 explains the accepted company identifiers (NIF/NIPC or registry link) so the agent knows how to target a company, but it never states when to reach for this tool versus run_pt_companies or run_pt_companies_search. Usage is only implied by the resource name.

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