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

readOnlyHint=true already declares the safety profile, but the description adds real value by disclosing the returned fields (slug, title, dates, location, currency, live/test_mode, public URL) and the underlying GET endpoints, which matters because no output schema exists. Pagination and rate-limit behavior are left to the schema.

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 tight sentences with the scope/default front-loaded and zero filler. The trailing 'Tito: GET /:account/events...' endpoint list is marginally useful for debugging but does not directly help the agent choose or invoke the tool.

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 no output schema, the description usefully enumerates the return fields, and the annotation covers safety. Pagination defaults are handled by the schema. Only minor gaps remain: no note on result-set size or how account_slug interacts with TITO_ACCOUNT.

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%, so the schema already documents all four parameters (page, page_size, scope, account_slug). The description's mention of the three scopes merely restates the enum and adds no syntax or format detail beyond what the schema provides; the baseline of 3 applies.

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 and resource ('List an account's events') and enumerates the three scope variants, so the agent knows exactly what it returns and how scope changes it. It stops short of explicitly contrasting with tito_get_event or the other list tools, so it is clear but not sibling-differentiating at the top level.

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?

'upcoming (default), past or archived' implies which scope to pick but that is also documented in the enum, so it adds little beyond the schema. It gives no guidance on when to use this tool versus tito_get_event or the other list_* siblings.

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