GetObjectNodeFromCache

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

The description reveals it accesses an in-memory cache and is read-only, adding behavioral context beyond the schema. However, it does not disclose what happens if the node is missing, or if expansion always occurs.

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 a single, well-structured sentence that front-loads the read-only status and efficiently conveys the tool's purpose and parameter usage.

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?

Given no output schema, the description mentions return of a node and URI expansion, but lacks details on the return format, optionality of expansion, or error handling.

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 already describes all three parameters with 100% coverage. The description adds value by explaining they are used as lookup keys to retrieve a specific node.

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 it is a read-only operation that returns a node from a specific cache, using three exact parameters and mentions URI expansion. This distinguishes it from sibling create/update/delete and other get tools.

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 does not provide any guidance on when to use this tool versus alternatives like other get/read tools. No exclusion criteria or use-case hints are given.

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