Landscape Briefing

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered. The description adds that it's a 'synthesized posture summary,' which is useful context beyond the annotations but doesn't reveal the nature of the synthesis, scope of threats covered, or frequency of updates. Given the strong annotation coverage and no contradictions, a 3 is appropriate.

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?

Single sentence, front-loaded with the core action, zero wasted words. It efficiently conveys purpose with the qualifier 'synthesized posture summary' adding useful nuance. This is appropriately concise for a no-parameter tool.

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 zero-parameter read-only tool with an output schema and complete annotations, the description is nearly complete. The only shortfall is not distinguishing it from the many similar briefing/debrief/bundle tools in the sibling list, which would help the agent choose the right one. But given the output schema will describe return structure, this is adequate.

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?

The tool has 0 parameters and schema coverage is 100% (nothing to document). With zero parameters, the baseline of 4 applies — the description correctly needs no parameter explanation, and the schema is trivially complete. There's nothing missing in parameter semantics.

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 states a specific purpose: 'Get the latest threat-landscape briefing — a synthesized posture summary of recent threat activity.' The verb 'get' plus resource 'threat-landscape briefing' clarifies what the tool returns. It's reasonably distinct from siblings like get_recent_threats or get_daily_theme, though it doesn't explicitly name a differentiating sibling.

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?

No guidance on when to use this tool versus alternatives like get_recent_threats, get_threat_level, or get_latest_debrief. The description implies it's for a 'posture summary' but gives no explicit context or exclusions, leaving the agent to infer which of many similar 'get' briefing tools is appropriate.

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