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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered structurally. The description adds that results are drawn from placetobe.cc pages, but says nothing about failure behavior for an invalid/expired id, rate limits, or access requirements. Useful but not rich beyond what the annotations supply.

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?

Two compact sentences: the first front-loads what the tool returns, the second handles input provenance. No filler, no repetition of the title, and the most decision-relevant content leads.

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, the description need not document return values, and annotations cover the read-only profile; input sourcing is covered. What is missing is only edge-case behavior (invalid id, unknown URL), which is a minor gap for a single-parameter lookup.

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 coverage is 100%, so the baseline is 3, and the schema itself already documents the accepted id and URL formats. The description goes marginally further by naming the upstream producer (search_events) and the domain, which helps the agent construct a valid call when chaining tools.

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?

States a specific verb+resource ('Get one event in full') and enumerates exactly what comes back: description, venue/address, coordinates, times, score with reason, and source page. This distinguishes it cleanly from the sibling search_events, which returns many events rather than one detailed record.

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?

Explicitly tells the agent where the input comes from — an id produced by search_events, or a placetobe.cc URL — which is the key chaining instruction. It lacks an explicit when-not-to-use note (e.g., 'do not use for browsing'), but the context is unambiguous for a detail-lookup tool.

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