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

Annotations already flag destructiveHint=true and readOnlyHint=false, so the description earns credit for what it adds: that the change propagates to the live app without a deploy, which explains the blast radius and justifies the confirmation prompt. It still says nothing about overwrite behavior, reversibility, or permissions.

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?

Two tightly written sentences, front-loaded with the operation and its type rule, ending with the caution. No redundant restatement of the tool name or title.

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 destructive, 4-parameter write tool with no output schema and zero schema description coverage, the description covers immediacy and the type rule but leaves the description field and the return/confirmation behavior entirely undocumented.

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 carry the load. It does explain the type enum values and the conditional requirement for type, but says nothing about the value parameter's expected shape per type (e.g. JSON payloads) or the purpose of the optional description field.

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?

States a specific verb and resource — 'Set a remote config value' — and immediately scopes the value types it accepts. The read counterpart get_config among the siblings is implicitly the inverse operation, so an agent can distinguish write from read without opening either schema.

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?

Gives a clear precondition ('confirm with the person first') plus a decision rule for the type field: mandatory for a new key, ignored/unchanged for an existing key. It does not explicitly name get_config as the read alternative, but the when-to-use context is otherwise well established.

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