list_replay_sessions

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

With no annotations, the description carries the burden and does well: it discloses the implicit filter (completed sessions with archive paths only), the tier-dependent result scope, and names a response field `restrictedToSeason` so the caller can detect the applied limit. It omits ordering of results and auth/permission failure behavior, keeping it from a 5.

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?

Four short sentences, front-loaded with purpose then eligibility then tier caveat then the response signal. No redundancy; every sentence conveys a constraint an agent needs.

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?

No output schema exists, and the description compensates partly by naming `restrictedToSeason`. For a zero-required-param list tool, what's missing is only minor: result ordering and whether pagination past the tier window is meaningful.

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% and each parameter (type enum, year pattern, limit, offset) is documented in the schema, so baseline 3 applies. The description adds no filter semantics beyond 'completed with archive paths', and never mentions that year/type narrowing interacts with the tier limit.

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?

Specific verb + resource + scope: 'List recorded F1 sessions that have archived data and can be replayed.' The qualifier 'recorded ... archived data' cleanly separates it from live/event siblings like get_live_session and list_events.

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?

States the eligibility condition clearly ('Only completed sessions with archive paths are returned') and explains tier-based scoping (Free/Developer see current season plus demo; full archive on Custom). It doesn't explicitly route to alternatives such as get_demo_session or prepare_replay, so no exclusions.

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