send_chat_action

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

No annotations provided. The description only states it shows activity, but fails to disclose that actions are ephemeral, may be throttled, or that the bot must be a chat member. Lacks key behavioral context.

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?

Single sentence, 14 words, very concise. However, it could be slightly expanded for clarity without losing conciseness.

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; description doesn't mention return value (likely boolean). Lacks details on scope (e.g., action only lasts for a few seconds), chat membership requirements, or rate limits.

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 baseline is 3. The description adds no extra meaning beyond the schema; it only paraphrases the enum values. No additional context on parameter usage.

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 verb 'Send', the resource 'chat action', and provides examples and purpose ('show the bot is doing something'). It effectively distinguishes this tool from sibling send_* tools that send actual content.

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 on when to use this tool (e.g., before long operations) or when not to (e.g., if a confirmation is needed). No mention of alternatives or prerequisites.

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