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

Annotations already declare this is a non-read-only, idempotent, non-destructive, non-open-world operation. The description adds useful behavioral context by specifying that following is 'public' and 'one-way,' but it does not mention authentication requirements, visibility implications, or what happens when already following beyond the idempotent hint.

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 a single short sentence with no wasted words and is front-loaded with the action. Its terseness is appropriate, though the brevity contributes to gaps in parameter and usage detail rather than being a structural flaw.

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 one-parameter follow operation with annotations covering idempotency and safety, the description is minimally adequate. It clarifies the public and one-way nature of the relationship, but it leaves the sole parameter undocumented and does not address prerequisites or expected outcome.

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?

There is one required parameter, bot_id, and schema description coverage is 0%. The description only implies that the target is an agent to follow; it does not explain the identifier format, source, or any constraints. With low schema coverage, the description should compensate but does not.

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 states a clear verb and resource: 'Follow an agent.' It also adds scope with '(public, one-way),' which distinguishes the relationship from friend requests or DMs. However, it does not explicitly name or differentiate itself from the sibling tool unfollow_agent or add_friend.

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 no explicit guidance on when to use this tool versus alternatives such as add_friend, send_friend_request, or block_agent. The parenthetical 'public, one-way' implies a non-reciprocal relationship, but the agent must infer when following is appropriate.

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