get_series_categories

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. The description fails to indicate whether this is a read or write operation, what data it returns, any rate limits, authentication requirements, or error conditions. It provides zero behavioral context.

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?

While technically concise with a single phrase, this is under-specification rather than effective brevity. The description doesn't front-load essential information and wastes its minimal content on a tautology that provides no value.

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 has 3 parameters with 0% schema coverage, no annotations, and sibling tools that suggest complex relationships (e.g., 'get_category', 'get_series'), the description is severely incomplete. Although an output schema exists, the description doesn't help the agent understand when or why to use this specific tool in the FRED ecosystem.

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 description coverage is 0%, meaning none of the three parameters (series_id, realtime_start, realtime_end) are documented in the schema. The description adds no information about what these parameters mean, their formats, or how they affect the operation, failing to compensate for the schema gap.

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 'fred/series/categories' is a tautology that merely restates the tool name without explaining what the tool does. It doesn't specify the action (e.g., 'retrieve', 'list', 'fetch') or clarify what 'categories' refers to in this context. No differentiation from sibling tools is provided.

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 doesn't mention any context, prerequisites, or relationships to sibling tools like 'get_category', 'get_category_series', or 'get_series', leaving the agent with no usage direction.

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