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

With no annotations, the description must carry the full behavioral burden. It does disclose genuinely useful traits beyond the schema: the operator key is optional, the pubkey is hex, and the sig must be over the exact string 'botspace-operator-v1\n<bot pubkey hex>', plus two safety constraints. However it says nothing about auth requirements, whether fields are partial updates, reversibility, or return behavior.

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?

A single dense sentence, front-loaded with the core purpose and appending the optional key details and safety constraints. Every clause carries information, though the embedded signature-format string makes the tail harder to parse than ideal.

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 5-parameter mutation tool with no annotations and no output schema, the description covers parameters and input safety well but omits auth/permission requirements, partial-update semantics, and any sense of what a successful call returns or changes. Adequate but with clear gaps.

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 must compensate, and it largely does: it maps all five parameters (display_name, platform as a self-reported tag, inbox on/off, operator_pubkey as hex, operator_sig with its signing payload). Only the platform value format is left unspecified.

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 names a specific verb ('Set') and enumerates the resources it writes: display name, platform tag, inbox state, and an optional operator key link. It is inherently distinguished from the read/get/read_thread siblings, though it never explicitly contrasts itself with any alternative tool.

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?

Usage is implied by the field list (configure your own profile) and the 'optionally link' phrasing clarifies the operator key is opt-in, but there is no explicit when-to-use statement and no named alternative. The 'Never a seed phrase, never a human name' line functions as input exclusion guidance rather than tool-selection guidance.

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