create_tool_and_assign_to_agent

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

Since annotations are absent, the description carries the burden for disclosing behavioral traits. It does add some useful detail by stating that it works with public APIs (no auth) and APIs with keys, which informs the agent of authentication requirements. However, it omits other important behaviors such as idempotency, side effects (e.g., overwriting an existing tool), or the return value, leaving gaps in transparency.

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, using three short sentences to convey purpose, example usage, auth compatibility, and an exclusion. It is front-loaded with the core function and contains no redundant or filler content, making it highly efficient.

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?

The tool has 4 parameters, no output schema, and no annotations, increasing the need for descriptive completeness. While the description covers the core purpose, an example, and auth handling, it fails to explain the 'description' parameter, potential side effects, or how this tool differs from the sibling deploy/assign tools beyond being 'ONE step.' This leaves the description moderately complete but with notable gaps for a tool with this complexity.

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?

Schema description coverage is 0%, so the description must compensate for parameter semantics. It implicitly explains 'url' (from URL) and 'agent_name' (assign to agent), but it does not clarify 'tool_name' or the optional 'description' field. The example hints at tool_name but does not define its role or constraints. Given the low coverage and partial compensation, this score is appropriate.

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's function: 'Create a tool from URL and assign to agent – ONE step.' This specific verb+resource+outcome combination directly conveys the tool's purpose and distinguishes it from the separate sibling operations (deploy_tool_from_url and assign_tool_to_agent) by emphasizing the combined single-step nature.

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 provides a concrete example of when to use the tool ('Use for 'create REST Countries tool and assign to TimeWeatherAgent'') and notes compatibility with both public and key-authenticated APIs. It also explicitly directs users to avoid the ADK, giving an exclusion. However, it does not explicitly mention using the separate sibling tools when only one step is needed, so differentiation from alternatives is incomplete.

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