edubase_post_classes_members

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

Annotations are provided: readOnlyHint=false, destructiveHint=false, idempotentHint=false. The description adds the key behavioral trait that it updates memberships if the user is already a member. This adds value beyond annotations. However, it doesn't disclose other behaviors like whether the notify parameter triggers an email, or what happens on failure. A 3 is appropriate as it adds some but not exhaustive 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?

The description is two short sentences with no filler. Every word adds value: the first sentence states the action, the second clarifies idempotency on re-assignment. This is appropriately concise and front-loaded.

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?

The tool has 4 params (all described in schema), no output schema, and moderate complexity (batch operation on users and classes). The description covers the core behavior and an important edge case (updating existing memberships). It omits what the response contains (e.g., success/failure per user-class pair) but with no output schema, that's acceptable. A 4 is appropriate for being mostly complete.

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 the baseline is 3. The description doesn't add any parameter-specific meaning beyond what's in the schema. It could have clarified the format for user/class IDs (e.g., are these UUIDs or names) or provided examples for the expires parameter. No added value over 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?

The description clearly states the verb 'Assign' and resources 'user(s) to class(es)'. It distinguishes from siblings like edubase_get_class_members (read) and edubase_delete_class_members (delete), and other membership tools. However, it could more explicitly contrast with edubase_post_class_members if that exists, but among siblings it's clear.

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 implies this tool is for assigning or updating memberships. It says 'Updates memberships if already member of a class', which gives guidance on idempotent-like behavior. While it doesn't explicitly state when not to use it or name alternatives, the update clause helps agents decide. Could be improved by stating when to use delete_class_members instead.

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