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describe_component

Look up OpenAPI component schemas by providing $ref paths, returning their definitions and structure.

Instructions

Look up component schemas by $ref paths

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
refsYesList of $ref paths (e.g. #/components/schemas/Pet)
serviceNameYesService name (projectId)
Behavior2/5

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

With no annotations provided, the description must disclose behavioral traits, but it does not mention return format, error handling, or any side effects. It only states the lookup intent, leaving the agent with no information about what happens on success or failure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence that uses every word effectively. It is front-loaded and direct, with no filler or redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool is simple with two well-described parameters, but since there is no output schema and no annotations, the description should explain what the lookup returns or how it behaves. The current description only covers the basic purpose and misses usage context and behavioral details, making it minimally adequate but not complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema description covers 100% of the two parameters (serviceName and refs), so the baseline is 3. The description adds only a slight contextual hint with 'by $ref paths', but does not elaborate on parameter formats or relationships beyond what the schema already provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Look up'), the resource ('component schemas'), and the method ('by $ref paths'). It distinguishes this tool from siblings like describe_api and describe_common_types by focusing specifically on component schemas and $ref lookup.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no indication of when to use this tool versus alternatives such as describe_api or describe_common_types. It simply states what it does without providing context, prerequisites, or exclusions.

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

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