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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is covered. The description adds the useful fact that four heterogeneous data sources are bundled into one response (implying heavier cost/latency than a single-metric sibling), but says nothing about caching, rate limits, or partial-failure behavior.

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?

A single front-loaded sentence that lists the payload components without filler. Every clause carries information and nothing is redundant with the name or title.

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?

With an output schema present, return values need not be described, and the annotations carry the safety profile, so the description is nearly sufficient for this read-only aggregate tool. The only real omission is guidance on when the bundled report beats calling the individual component tools.

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 100% and the schema documents both parameters including the 'default: base' chain behavior, so the description correctly does not repeat them. No additional parameter meaning is supplied, which matches the baseline for fully documented schemas.

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 names a specific resource (address report) and enumerates exactly what it aggregates: wallet profile, credit score, token approvals, and recent interactions. This implicitly separates it from the single-purpose siblings (wallet.profile, wallet.credit_score, token.approval), though it never names those siblings explicitly.

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 only implied: the agent can infer this tool is for a one-shot overview of an address rather than calling each component tool separately, but there is no explicit 'use this when...' or 'prefer X for a single metric' guidance. No prerequisites or exclusions are stated.

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