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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered and the bar is low. The description adds the scoping detail that sources are tied to published notices and lists what each record exposes, but says nothing about ordering, pagination, or freshness of the 'last checked' value.

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?

A single front-loaded sentence covering the core action first and the returned attributes second, with no filler or hedging. The trailing field list is slightly redundant given an output schema exists, but it costs little.

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 parameters, full schema coverage, an output schema, and annotations covering the safety profile, the description carries most of the remaining burden and does so adequately. The only substantive omission is any guidance on when this list is the right call versus a sibling tool.

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?

There are zero parameters, so the baseline is 4 and there is no syntax or default the description could usefully add. The field enumeration overlaps with what the output schema already carries, so it neither compensates for a gap nor creates one.

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 (list procurement sources behind published notices) and enumerates the returned fields, which is concrete enough to distinguish it from generic search tools. It does not, however, explicitly contrast itself with the closest sibling, get_public_tender_facets, so an agent must infer the boundary.

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 contains no when-to-use statement, no prerequisites, and names no alternative among the seven siblings. That the tool takes no parameters implies an unfiltered enumeration, but nothing in the text routes the agent here rather than to list_public_tender_changes or get_public_tender_facets.

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