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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds that releases and event metadata are returned, which is useful context, but says nothing about permissions, pagination, or rate limits beyond what the schema implies.

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 sentences, front-loaded with purpose and the field inventory. The trailing 'Tito: GET /:account/:event' endpoint reference is mildly redundant but short and aids mapping to the underlying API.

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 compensates by enumerating the returned fields (title, description, dates, time zone, location, currency, live/test_mode, releases), which is what an agent needs. It could note auth requirements for the token, but overall it is complete for this read tool.

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 both event_slug and account_slug are already well documented with examples and the TITO_ACCOUNT fallback. The description only restates 'by slug' and adds no format or fallback detail beyond the schema, so the baseline 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 ('Fetch a single event by slug') and enumerates the returned fields, so an agent can tell it apart from the sibling list tool tito_list_events. The scope (one event, keyed by slug) is 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?

Usage is implied by 'single event by slug' versus the list-oriented siblings, but the description never states when to prefer this over tito_list_events or tito_get_release, nor any prerequisites. Adequate but leaves routing to inference.

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