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

With no annotations provided, the description carries full burden. It discloses output fields (agent_id, chain, public name, shareable URL, count) and explicitly states what is NOT included. It mentions three lists, adding behavioral context. No side effects or auth needs are mentioned but for a read-only tool this is acceptable.

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 concise with efficient sentences. It front-loads the purpose and then details the three lists. Could be slightly more structured with bullet points, but overall clear and not verbose.

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 description covers output content and exclusions, but lacks details like sorting order, pagination, data freshness, or definition of 'recently indexed'. Given zero parameters and no output schema, the description is adequate but could be more complete to fully set expectations.

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 input schema has zero parameters, so per guidelines baseline is 4. The description adds no parameter semantics beyond schema, but none are needed.

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 that the tool returns top ERC-8004 agents by live capability and most recently indexed, specifying three ranked lists. It differentiates from sibling tools by explicitly stating what is included and excluded (names and counts only, no owner wallets etc.), making the purpose unambiguous.

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 usage context: use to find most capable/active agents to integrate or watch. It sets expectations by listing what the output contains and explicitly what it omits. However, it does not provide explicit guidance on when not to use or compare directly with siblings.

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