nexus_update_about_me

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

The description adds return format ('JSON {success} or an error string') which is useful, but the annotations already cover safety flags (readOnlyHint=false, idempotentHint=true, destructiveHint=false). The description does not disclose potential side effects, permission requirements for targeting other users via user_id, or error conditions beyond the generic error string. It adds some value but not deep behavioral 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 extremely concise—two short sentences. The purpose is front-loaded, and the return statement is a single line. No wasted words or redundant information.

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 mutation with an output schema (indicated by 'Has output schema: true'), the description covers the essential behavior and return format. The optional user_id with its 'Omit for the current user' default is documented in the schema. Minor omissions (e.g., prerequisite authentication) are likely assumed and not critical for correct invocation.

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%, with both parameters (about and user_id) already documented in the input schema. The description adds no additional parameter meaning, so baseline 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?

The description clearly states the verb ('Update') and resource ('a user's About Me profile text') and specifies it uses v2 GraphQL, distinguishing it from other update tools like nexus_update_country or nexus_update_preferences. This is specific enough for an agent to identify the tool's purpose without ambiguity.

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 provides clear context—this tool is specifically for updating About Me text—but does not mention alternatives or explicit exclusions. Since it's the only tool for this purpose among many siblings, the context is sufficient for routing, though it lacks explicit 'when not to use' guidance.

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