venmo_search_users

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

There are no annotations provided, so the description must carry the full burden of behavioral disclosure. It only states the basic action without mentioning what results are returned, whether authentication is required, if partial matches are allowed, or any other behavioral details. This is a significant gap for a search tool.

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, clear sentence that front-loads the action and resource. There is no wasted verbiage, and it is appropriately sized for a simple search tool.

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 tool's simplicity and lack of output schema, the description should at least indicate what the search returns or any relevant constraints. It only states the search function and leaves the agent guessing about result format or behavior. This is incomplete for safe and correct usage.

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 provides 100% coverage with a description for the 'query' parameter ('Name or username to search for'). The tool's description essentially repeats this information without adding extra meaning, examples, or constraints. Baseline 3 is appropriate since the schema does the heavy lifting.

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 uses the specific verb 'Search' and identifies the resource 'Venmo users' with the search criterion 'by name or username'. This clearly distinguishes it from sibling tools like venmo_send_payment or venmo_get_balance, which perform different actions.

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 clearly implies the tool is for finding users, which is a prerequisite for actions like adding friends or sending payments. While it doesn't explicitly list alternatives or exclusions, the context is clear enough that an agent knows when to use it.

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