get_document_by_id

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

Annotations already declare readOnlyHint=true. The description adds that an exception is raised if the document is not found, which is useful behavioral context beyond what annotations provide. No other behaviors are disclosed, but for a simple read, this is adequate.

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 with two sentences. The first sentence states the core purpose, and the second adds an important behavioral note. No redundant or unnecessary words.

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 simple document retrieval tool with an output schema (not shown but present), the description covers the essential action and a key edge case (exception on not found). It does not mention the output structure, but that is handled by the output schema. A minor improvement would be to clarify that it retrieves a single document, but overall it is sufficiently complete.

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 has 0% description coverage. The description only mentions scope and collection, partially explaining two of four parameters. Bucket_name and document_id are not explained, leaving the agent without full clarity on parameter roles. The description does not compensate adequately for the lack of schema 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 clearly states the action (get a document) and the resources (by ID, from scope and collection). The tool name is explicit and distinguishes it from sibling tools which are about queries, indexes, and cluster info.

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 for retrieving a specific document but gives no explicit guidance on when to use versus alternatives or when not to use. Among siblings, no other tool directly retrieves a single document, so context is implied, but explicit guidelines are absent.

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