xdel

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

The description discloses the action (deletion) and return type (confirmation or error message). However, it lacks details on behavior when key or entry_id is missing, or any side effects. With no annotations, this is adequate but minimal.

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 very concise, with a clear first sentence defining the purpose, followed by a compact Args and Returns section. Every sentence is necessary and adds value.

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 the simplicity of the tool (two required parameters, no output schema needed beyond return string), the description is complete enough. It explains the parameters and return value. Slight deduction for lack of edge-case behavior.

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 description includes brief parameter descriptions ('The stream key' and 'The ID of the entry to delete'), which adds meaning beyond the schema (which only has titles and types). Schema coverage is 0%, so the description partially compensates, but the descriptions are minimal.

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 deletes an entry from a Redis stream, using a specific verb and resource. It distinguishes itself from sibling delete tools like hdel, json_del, lrem, etc., which operate on different data structures.

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?

No explicit guidance on when to use this tool over alternatives. The description does not mention prerequisites, context, or contrast with other delete operations.

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