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

With no annotations, the description carries the burden; it does disclose the result cap (latest 5) and that county data is included, and 'FREE' signals no paid/auth barrier. It does not state ordering, freshness, error behavior for invalid state codes, or whether results are read-only in any formal sense.

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 compact sentence with the cost flag front-loaded, then resource, scope, categories, and return payload. No redundant restatement of the tool name or schema.

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 simple one-parameter lookup with no output schema, the description covers what comes back (5 most recent declarations with counties) and the domain. Slight gap on ordering/recency semantics and on differentiation from new_declarations keeps it below 5.

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?

Only one parameter and schema description coverage is 100% ('2-letter state, e.g. FL'), so the schema already defines it fully. The description adds only the 'US' qualifier; baseline 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?

Names a specific verb-like resource (latest 5 FEMA disaster declarations), the scoping input (a US state), the disaster categories covered, and the payload (with counties). It is clear what it does, but it never contrasts itself with the sibling new_declarations, which plausibly returns recent declarations too.

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?

Usage is only implied: an agent can infer 'use this for a state's recent disasters,' and 'FREE' hints at a cost-based preference. There is no explicit when-to-use vs when-not, and no routing away from new_declarations or toward county_history for sub-state detail.

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