set_config

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does not mention persistence, overwriting behavior, scope, side effects, error conditions, or required permissions. For a mutation tool, this is a complete absence of transparency.

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 very short, but this is under-specification rather than effective conciseness. The single sentence provides no useful information beyond the tool name and does not earn its place as a meaningful description.

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?

With only two simple parameters and full schema coverage, the tool is not inherently complex, but the description still fails to provide essential context such as the effect of setting a config value, whether it updates an existing setting, or what the expected outcome is. The description is completely inadequate for an agent to invoke this tool confidently.

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%, so the baseline is 3. The description adds no meaning beyond the schema: it simply says 'configuration setting' while 'key' and 'value' are already documented as 'Configuration key' and 'Configuration value'. No additional parameter context is provided.

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 'Set configuration setting' essentially restates the tool name 'set_config', providing no additional specificity about what kind of configuration or which settings. It is a tautology rather than a clear statement of purpose that distinguishes this tool from siblings like get_config.

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?

There is no guidance on when to use this tool versus alternatives. The sibling list includes get_config, which suggests a read counterpart, but the description gives no context about when setting a config value is appropriate or what prerequisites might exist.

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