Get release for a FRED series

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is known. The description adds no further behavioral context except the example, and it does not contradict annotations. Given the annotation coverage, a score of 3 is appropriate.

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: two sentences, the first states the purpose directly and the second provides a concrete example. No filler or redundant information is present.

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?

The tool has one required parameter and two optional realtime parameters that are not described. The output schema exists, but it does not help with parameter semantics. The description is adequate for a basic call but leaves the realtime parameters ambiguous, creating a clear gap for an agent.

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%. The description only illustrates series_id in the example, providing no semantics for realtime_start and realtime_end parameters. These optional parameters remain undocumented, and the description does not compensate for the schema's lack of descriptions.

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 states a specific verb and resource: 'Get the release that publishes a FRED series,' immediately clarifying the tool's function. The example with series_id='CPIAUCSL' reinforces the primary input. This clearly distinguishes it from sibling tools like get_release, which fetches a release by ID, and list_releases, which lists all releases.

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 implies usage through the example but does not explicitly state when to prefer this tool over alternatives like get_release or get_series_categories. No exclusions or alternative references are provided, leaving the context only implied.

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