announcement_timeline_operation

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

With no annotations provided, the description carries full burden but lacks behavioral details. It states the tool performs operations but doesn't disclose effects (e.g., whether 'rewind' resets to start or a specific point), permissions needed, error conditions, or if it's idempotent. This is inadequate for a mutation tool with zero annotation coverage.

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, efficient sentence that front-loads the core action and target. It avoids redundancy, though it could be slightly more informative (e.g., by clarifying 'active announcement' context). Every word earns its place, making it appropriately concise.

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?

Given the tool's complexity (a mutation operation with no annotations and no output schema), the description is incomplete. It doesn't explain what the operations do behaviorally, what 'active announcement' means, potential side effects, or return values. For a tool that modifies state, this leaves significant gaps for an AI 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?

Schema description coverage is 100%, with the single parameter 'operation' fully documented in the schema via enum and description. The description adds no additional parameter semantics beyond implying the operations apply to an 'active announcement', which is already inferred from the tool name and context. Baseline 3 is appropriate as the schema does the heavy lifting.

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 states the action ('perform timeline operation') and target ('on active announcement'), specifying the operations as play, pause, and rewind. It distinguishes from siblings like 'announcement_get_timeline_status' (which reads status) and 'announcement_trigger_active' (which triggers rather than operates timeline), but could be more explicit about the distinction.

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., requires an active announcement), exclusions, or compare with similar tools like 'focused_timeline_operation' or 'presentation_timeline_operation' from the sibling list, leaving usage context unclear.

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