discord_delete_dm

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

Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=false, so the bar is lower. The description adds value by emphasizing 'IRREVERSIBLE,' the bot-only deletion constraint, and the 'Returns a confirmation' behavior. There is no contradiction with annotations.

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?

Three short, purposeful sentences. The irreversible nature is front-loaded, followed by the critical scope limitation and return behavior. Every sentence earns its place with no redundancy or filler.

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?

For a simple two-parameter destructive operation with no output schema, the description is complete: it identifies the exact target, states the permission boundary, warns about irreversibility, and describes the result. An agent has enough information to select and invoke this tool correctly.

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 both parameters already have clear descriptions in the schema. The tool description does not add extra meaning or usage details about user_id or message_id beyond what the schema provides, so the baseline score of 3 is appropriate.

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?

States a specific verb ('Permanently delete') and a well-defined resource ('a DM message previously sent by this bot'). It clearly differentiates from generic delete_message by specifying the DM context and the bot-owned scope, so an agent can distinguish it from siblings like discord_delete_message or discord_bulk_delete_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?

The description gives clear context for when this tool is appropriate: deleting DM messages sent by the bot. It also includes an explicit exclusion—'not the recipient's' messages—preventing misuse. However, it does not name sibling alternatives or state when to use a different tool such as discord_delete_message.

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