create_scheduled_tweet

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

With no annotations, the description partially covers behavior: mentions rate limits and that scheduled_at must be in the future. However, it omits details like whether scheduling can be canceled, error handling, or response behavior.

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 reasonably concise with the main purpose stated first. The Args section is clear but slightly verbose; could be tightened.

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?

While output schema exists, the description doesn't address error cases, confirmation of scheduling, or permission requirements. Lacks details on limitations of scheduling (e.g., maximum future time).

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?

Despite 0% schema coverage, the description adds meaning to all three parameters: scheduled_at is a Unix timestamp in the future, text must be provided if media_ids is absent, media_ids is a list of media IDs. Clarifies constraints beyond schema types.

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 tool schedules a tweet for a future Unix timestamp, using specific verb 'Schedule' and resource 'tweet'. It distinguishes itself from sibling tools like 'send_tweet' (immediate posting) and 'delete_scheduled_tweet'.

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?

The description specifies the condition for use (future timestamp) and notes rate limits, but does not explicitly differentiate from 'send_tweet' or provide when-not-to-use guidance.

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