update_profile

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

Annotations already indicate it is a write operation (readOnlyHint=false) and not destructive. The description adds valuable context beyond annotations: the critical distinction between 'None' (no change) and empty string (clear field), which affects invocation behavior. It does not contradict 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 two short sentences: the first states the purpose, the second explains parameter behavior. No unnecessary words, and the most operationally important information (null vs empty string) is front-loaded. Perfectly sized for a simple tool.

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 straightforward profile update with three optional parameters and an output schema present, the description covers purpose and parameter semantics completely. It specifies the scope (own profile) and the behavior of all fields. No missing critical details 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 coverage is 0%, so the description carries full responsibility for parameter meaning. It clearly explains that None preserves the current value while an empty string clears it, directly clarifying all three optional parameters (about, last_name, first_name). This is essential and not derivable from the schema alone.

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 tool updates the user's own profile fields (first name, last name, bio) with a specific verb 'Изменить' (change). It distinguishes from sibling tools like update_username by listing the specific fields, and from other chat-related edits by specifying 'собственного профиля' (own profile).

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 when to use it (updating own profile fields) and provides parameter semantics, but it does not explicitly mention alternatives or exclusions. It lacks an explicit statement like 'for changing username, use update_username', leaving the agent to infer from the purpose.

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