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brianpelow

mcp-developer-portal

by brianpelow

get_techdocs_tool

Retrieve TechDocs documentation for any entity in the Backstage catalog by providing its name.

Instructions

Fetch TechDocs documentation for a catalog entity.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYes
kindNoComponent
namespaceNodefault

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations provided, the description carries full responsibility for behavioral disclosure. However, it only states the core function without mentioning any side effects, error conditions, permissions, or limitations (e.g., what happens if the entity does not exist or has no TechDocs). This is insufficient for safe usage.

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, clear sentence that immediately conveys the tool's purpose. It is front-loaded and contains no unnecessary words or structure.

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 description provides a minimal but adequate statement of the tool's function. Given the existence of an output schema, the description does not need to detail return values. However, it lacks explanation of parameter roles and defaults (e.g., 'kind' defaults to 'Component'), which is important for correct invocation.

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

Parameters2/5

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

The input schema has 0% description coverage, meaning the schema itself provides no explanations. The description does not elaborate on the parameters; it only implies that the 'catalog entity' is identified by the parameters. The agent cannot infer the meaning of 'name', 'kind', or 'namespace' or their defaults from the description.

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 'Fetch TechDocs documentation for a catalog entity' clearly states the action (Fetch), the resource (TechDocs documentation), and the target (catalog entity). It is specific and distinguishes this tool from siblings like get_entity_tool or search_catalog_tool, which deal with different aspects of catalog entities.

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 provides no guidance on when to use this tool versus alternatives, no mentions of prerequisites or conditions, and no exclusions. The agent is left without context for appropriate invocation.

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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