create_users_by_id_follow

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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=false. The description adds that this creates a follow relationship and advises consulting the schema/GET before sending a body, but it does not disclose side effects, auth requirements, or rate-limit considerations. 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?

The description is compact and well-structured: a one-sentence action summary, the endpoint, and an Args block. It contains no filler and front-loads the primary behavior.

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 follow operation, with an output schema present and openWorldHint enabled, the description covers the essential call pattern: identify the user and supply a body learned from the schema or matching GET. It leaves the body's exact shape undisclosed and does not mention the reverse delete action, but the tool is simple enough that this is adequate.

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 0%, so the description must compensate. It usefully defines id as a user slug or 'me' for the authenticated user. For body, it only calls it a 'request payload' and points to the matching GET or /schema endpoint, which is helpful discovery guidance though not a direct field list.

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 opens with 'Follow this user' and gives the explicit endpoint POST /users/{id}/follow, naming a specific action and resource. This clearly distinguishes it from sibling tools like create_users_by_id_block or delete_users_by_id_follow.

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 intended use is implied by the action name, but there is no explicit guidance on when to choose this tool over alternatives, when not to use it, or what prerequisites apply. No mention of authentication or the corresponding unfollow operation.

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