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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior. The description adds meaningful behavioral context by enumerating the payload: agents, manifests, checklist, testnet config, and actionable next steps. It does not contradict the annotations and goes beyond mere safety signaling.

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, tight sentence that front-loads the user-facing question and then lists all returned content categories. Every clause adds value; there is no filler, fluff, or redundant restating of the tool name.

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?

An output schema exists, so return-value structure is already covered. The description rounds out the picture by naming the key content categories, the environment (Base Sepolia testnet), and the practical value (what you can do now vs. still need). For a zero-argument, read-only status tool, nothing essential is missing.

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 takes zero parameters, and the schema states that the owner is derived from the authenticated principal. The description reinforces this by using 'your' registered agents and by describing the returned context. With no parameters, the baseline is 4, and the description adds appropriate context without being parameter-specific.

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 concrete question, 'Where am I in onboarding?', and then states exactly what the tool returns: registered agents, capability manifests, progress checklist, Base Sepolia config, and current vs. next steps. This clearly identifies it as an onboarding status/read tool and distinguishes it from action-oriented siblings like register or get_recommended_action.

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 question format and content list make the intended use case obvious: call when you need a snapshot of onboarding progress and currently available capabilities. It does not explicitly name alternatives or exclusions, but the read-only status framing provides clear contextual guidance.

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