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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safe read-only nature is covered. The description adds beyond the annotations by revealing the exact scope of the response — including the progress checklist, testnet config, and 'what you can do now vs. still need' — which gives the agent useful behavioral expectations about the returned state without contradicting the annotations.

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 two compact sentences that front-load the core purpose as a question, then efficiently list the return contents. Every phrase earns its place, and it does not repeat the schema's parameter explanation or the annotations' safety flags.

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-argument read-only status tool with a rich output schema, the description is fully sufficient: it covers the semantic payload, the onboarding context, and the practical takeaway ('what you can do now vs. still need'). There is no missing behavioral or invocation information an agent would require to call it correctly.

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?

With 0 parameters and 100% schema description coverage, the schema already fully explains the input situation ('No arguments — the owner is derived from the authenticated principal'). The description adds no parameter detail, but none is needed, so the 0-param baseline of 4 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 opens with a pointed question ('Where am I in onboarding?') and enumerates a specific inventory of returned items: registered agents, capability manifests, progress checklist, Base Sepolia testnet config, and actionable next steps. This makes the tool's purpose unmistakable and distinguishes it from sibling tools like check_earnings or list_agents by framing it as an onboarding-status query.

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 use case — call it when you need to know your onboarding progress and current capabilities — but it never explicitly states when to use it versus alternatives such as a2awire_guide or list_manifests. There is no exclusion or 'if you need X, use Y instead' guidance, leaving the timing to inference.

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