reply_discord_message

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

Discloses it's a write action and should be shown as a confirmation pill, providing some behavioral context. However, no annotations exist, and the description lacks details on error handling, rate limits, or idempotency.

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, each serving a purpose: stating the action and specifying user confirmation. Efficient but could be slightly tighter.

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 6 parameters, no output schema, and no annotations, the description is incomplete. It does not explain return values, error conditions, or how to use optional parameters (channel_name/guild_id) effectively.

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 tool description repeats the need to confirm parameters but adds no new meaning beyond the schema.

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?

Clearly states 'Reply to a specific Discord message ID in a channel', which is a specific verb-resource combination. Distinguishes from siblings like 'send_discord_message' and 'read_discord_messages'.

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?

Indicates it's a write action requiring user confirmation, but does not explicitly contrast with sibling tools like 'send_discord_message' for new messages or 'read_discord_messages' for reading. No 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.