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 covered. The description adds content scope (routes, billing regime, price) but says nothing about auth requirements or how the index is structured. With annotations carrying the safety burden, this is adequate but not rich.

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 short sentence with no filler, and the resource is front-loaded. It is efficient, though arguably under-specified rather than maximally informative.

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 no-param, read-only index endpoint with no output schema, the description should convey what the caller receives. It lists three content categories (routes, billing, price), which is helpful, but omits any indication of format or scope, leaving the return value partly opaque.

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 takes zero parameters, so there is no parameter semantics to convey. The schema is trivially complete (100% coverage of an empty object), and the baseline for parameterless tools is 4.

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 identifies the resource ('Índice da API do EditalMD') and enumerates the specific content it surfaces: routes, billing regime, and price. This is clear verb-resource framing for a discovery endpoint, though it does not explicitly differentiate itself from siblings like 'health', 'pricing', or 'api_access'.

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?

There is no guidance on when to call this tool versus alternatives. With siblings such as 'health', 'pricing', and 'api_access' present, an agent gets no signal about which to prefer for discovery versus status versus price lookup.

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