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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the description does not need to restate safety. It adds useful behavioral context by naming the Base network and noting that no API key is required, though it does not discuss error behavior or rate limits.

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 front-loaded sentence that identifies the returned data, the network, the deployment status, and the no-API-key condition. Every clause adds relevant information without waste.

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 zero-parameter read-only tool with no output schema, the description supplies the key return values and the auth condition an agent needs to decide whether to call it. Annotations cover the safety profile, and nothing critical is missing for correct invocation.

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 tool has zero parameters, so there are no parameter semantics to explain. The baseline score for no params is 4, and the description appropriately focuses on returned information instead of inventing parameter details.

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 states a specific verb, 'Retrieves,' and names the exact resources: the Agent Owner EOA address, Safe Smart Wallet address on Base, and deployment status. It is clear enough to distinguish from siblings like execute_onchain_intent or dry_run_simulation by being purely informational, but it does not explicitly differentiate itself from those 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?

Usage is implied by the retrieval purpose and the note that it 'Works without an API key,' which is a useful prerequisite signal. However, the description does not state when to use this tool versus alternatives, nor does it include exclusions or when-not conditions.

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