Vitena Directory

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

Annotations already declare this as a safe, read-only, idempotent operation, so the bar for additional behavioral disclosure is lower. The description adds useful context by specifying that it returns a 'full public profile' and listing what data the agent can expect, which goes beyond the bare annotation hints.

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 entire description is one focused sentence with no filler. The core purpose is front-loaded, and the field list is compact yet comprehensive.

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?

With no output schema present, the description carries the burden of explaining the return value, and it does so thoroughly by listing services, specializations, languages, locations, hours, contacts, and booking availability. Combined with the simple one-parameter schema and clear relationship to search_providers, the agent has everything needed to use the tool correctly.

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 schema already fully documents the single 'slug' parameter with an example, and the description restates the same source ('the value returned as 'slug' by search_providers'). The description adds little beyond the schema, so the baseline of 3 is appropriate.

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 uses a specific verb ('Returns') and resource ('full public profile of one professional by their slug'), and enumerates the key fields returned. It also ties the slug to search_providers, which clearly differentiates it from the sibling search tool.

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 clearly indicates this tool is used after obtaining a slug from search_providers, giving the agent a concrete workflow. It does not explicitly state when not to use this tool vs alternatives, but the usage context is clear enough for correct selection.

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

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

Annotations already mark the tool as read-only, idempotent, and non-destructive, so the description adds valuable context beyond that: exact-code matching, silent failure on guessing, the dynamic nature of 'currently available' values, and how search_providers handles free-text city names. This deepens the agent's understanding of the tool's behavior.

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 three sentences, front-loaded with what the tool returns, followed by precise usage instructions and a clarifying caveat about CITY. Every sentence adds distinct value with no redundancy or filler.

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-parameter read-only tool with rich annotations and no output schema, the description is complete: it names the output categories, explains when to call it, and resolves ambiguity with sibling tools. An agent can confidently select and invoke this tool without further clarification.

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 input schema is empty and the description correctly implies the tool takes no parameters. With zero parameters, the description has no param semantics to document, so the baseline score of 4 applies; there is no gap to compensate for.

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 returns valid filter values for the provider directory, specifically enumerating specialization codes, language codes, and countries. It also functionally distinguishes this from sibling tools by clarifying what it is not for, such as CITY resolution handled by search_providers.

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?

It explicitly tells the agent to call this FIRST when filtering by specialization, warns that guessing specialty names silently returns no results, and explicitly says CITY is not in the list and should be passed to search_providers. This gives direct when-to-use and when-not-to-use guidance with a named alternative.

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

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

Annotations already declare readOnly, openWorld, idempotent, and non-destructive behavior. The description adds useful behavioral context beyond that: results are public profile data only, appointment-accepting professionals are included, and each result contains a profileUrl for booking. No contradiction with annotations.

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?

Three sentences, each earning its place: purpose and scope, filter default behavior, and result usage. The most decision-relevant information is front-loaded and there is no filler.

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 search tool with rich schema descriptions and safety annotations, the description adequately explains scope, default behavior, and result usability. It could be slightly stronger by naming the sibling tools explicitly, but nothing essential for invoking the tool correctly is missing.

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 100%, so all eight parameters are individually documented. The description mostly restates that filters are optional and describes overall result behavior, adding little parameter-level meaning beyond what the schema already provides.

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 opens with a specific verb and resource: 'Searches the public Vitena directory of health and wellness professionals.' It names the disciplines covered and clarifies this is a directory search, which distinguishes it from get_provider and list_directory_filters.

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?

It clearly explains that all filters are optional and that an unfiltered call returns the first page of all public listings, plus the practical follow-up of giving the profileUrl to the user. However, it never explicitly contrasts this tool with get_provider or list_directory_filters, leaving that routing largely to inference.

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