get_event_timeline

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

Without annotations, the description bears full responsibility. It reveals the tool is a thin wrapper, paid, and that the default mode returns a x402 challenge. This is helpful but lacks explicit status on read-only nature or what happens on success.

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, clear sentence with no redundancy. It front-loads the purpose and adds critical caveats efficiently.

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 simple GET wrapper with no output schema, the description covers the essential behavioral aspects (paid, x402). However, it omits the expected return structure on success or error handling, leaving gaps for an agent.

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 100% schema coverage of the single 'id' parameter, the description adds no extra meaning beyond the generic 'event identifier.' The baseline is 3, and the description does not raise it.

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 identifies the tool as a thin wrapper for an HTTP GET endpoint to retrieve an event timeline. The reference to 'paid endpoint' and x402 challenge distinguishes it from siblings like inspect_x402_challenge.

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 mentions it's a paid endpoint and may return a challenge, providing context for when to use. However, it doesn't explicitly state when to use this tool over alternatives like inspect_x402_challenge or under what conditions to avoid it.

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