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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the agent knows it's a safe write operation. The description adds the auth requirement and the 'pending submitted item' state, which are meaningful behavioral details beyond annotations. It does not cover error handling or rate limits, but given annotations, this is adequate.

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 sentences, front-loaded with the purpose and followed by the authentication requirement. No wasted words; every sentence contributes essential information.

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?

Given the tool is a write operation with an output schema present (as indicated by context), the description covers the core behavior, authentication, and the pending state. It lacks explicit error handling or idempotency notes, but the output schema and annotations fill most gaps. A minor gap but not critical.

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 coverage is 100%, so all parameters (title, description, url) are already described in the schema. The description adds no extra meaning beyond that. Baseline 3 is appropriate when schema does the heavy lifting.

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 clearly states the verb 'submit' and the resource 'an incident or signal', and explains it creates a pending submitted item via REST API. It distinguishes itself from the read-only siblings (get_latest, query_security_feed) by being the only write operation.

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 explicit prerequisites (API key acquisition and authentication method), which is essential usage guidance. It implies when to use it (when reporting an incident) but does not explicitly contrast with the sibling read tools. Still, the context is clear and actionable.

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