US Government Open Data MCP

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It describes what the tool returns (boundaries and states) but doesn't mention behavioral traits like whether it's a read-only operation, if it requires authentication, rate limits, data freshness, or error handling. For a tool with zero annotation coverage, this leaves significant gaps in understanding how it behaves.

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?

The description is extremely concise and front-loaded: the first sentence states the core purpose, and the second adds useful scope information. Every sentence earns its place with no wasted words, making it easy for an agent to quickly understand the tool's function.

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's simplicity (0 parameters, no annotations, no output schema), the description is reasonably complete for what it does. It explains what data is returned and the coverage scope. However, without annotations or output schema, it could benefit from more behavioral context (like response format or limitations) to be fully complete for agent use.

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 with 100% schema description coverage. The description doesn't need to add parameter semantics since there are no parameters to document. It earns a baseline 4 because the schema fully covers the parameter situation (none), and the description appropriately doesn't waste space on non-existent parameters.

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 tool's purpose: 'Get FEMA region boundaries and associated states.' It uses a specific verb ('Get') and identifies the resource (FEMA region boundaries and states). However, it doesn't differentiate from sibling tools since there are no other FEMA-related tools in the list, so it can't earn a 5 for sibling differentiation.

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 provides no guidance on when to use this tool versus alternatives. It mentions '10 FEMA regions cover all U.S. states and territories,' which gives some context about scope, but doesn't specify use cases, prerequisites, or comparisons to other tools. This is a basic informational tool with no explicit usage instructions.

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