reply_to_discussion_entry

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

Lacks annotations, so description must disclose behavioral traits. Only mentions it's a reply, but no info on side effects, idempotency, restrictions (e.g., deadlines), or success/failure 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?

Extremely concise: two lines for purpose then clean argument list. Every sentence is necessary. Front-loaded with the action. No wasted words.

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?

Despite no annotations, the description lacks completeness. Does not mention output schema, required permissions, or how to obtain entry_id. Minimal context for a write tool with 4 required params. Sibling tools are not differentiated.

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 0%, so description must compensate. Provides brief but helpful explanations for each parameter (e.g., 'Course code or Canvas ID' for course_identifier), adding some meaning beyond schema titles. However, descriptions are minimal and could be more detailed.

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 student's discussion entry/comment' with specific verb and resource. Distinguishes from sibling 'post_discussion_entry' by implying it's a reply to an existing entry, though not explicit.

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 vs alternatives like 'post_discussion_entry' or prerequisites (e.g., needing valid topic_id and entry_id). Just states the action without context.

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