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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered; the description adds the plain-text return format, the content categories included, and the incremental semantics of `since`. It does not say what happens when `since` is omitted, how the token selects the nation, or anything about report size or failure modes.

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?

Two short sentences, front-loaded with what the report is before the usage note; the content enumeration is informative rather than filler. Nothing redundant, though it is terse enough to leave gaps.

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 two-parameter read-only tool with no output schema, the description conveys the format (plain text), the content, and the incremental pattern adequately. Only the authentication/ownership semantics of `token` and the no-`since` behavior remain unstated.

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 0%, so the description must compensate. It explains `since` well ('a lastSeq from a previous briefing'), which is the non-obvious parameter, but leaves `token` completely unexplained beyond the implied 'your nation' ownership.

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+resource: a plain-text report of your nation since a given sequence, enumerating its contents (battles, betrayals, capitals, pacts, secret offers). The incremental 'since a lastSeq' framing implicitly distinguishes it from the sibling my_nation, but no sibling is named explicitly.

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?

'Use it to keep the human who owns the nation up to date' gives a clear usage context, and 'since a lastSeq from a previous briefing' implies the incremental pattern. However, there is no guidance on when to omit `since`, no exclusions, and no direct comparison to my_nation or sample_turn.

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