binlog_status

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

With no annotations, the description carries the burden of behavioral disclosure. It explicitly marks the operation as [READ], and lists the data areas (binary-log config, GTID mode, replicas). However, it does not mention permissions, output format, pagination, or error behavior. This is adequate for a simple read-only status tool but leaves some gaps.

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: one front-loaded sentence for the purpose and one for the parameter. No wasted words, perfect structure.

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 single-parameter read-only tool with no output schema, the description is largely complete. It states what the tool reads and explains the one optional parameter. It does not explain return values in detail, but that is less critical for a status tool. Overall, it is sufficient for basic use.

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?

The schema provides no description for the target parameter (0% coverage). The description fully compensates by explaining 'Target name from config; omit for the default.' This adds clear meaning to the parameter beyond the schema's type/default.

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 uses a specific verb and resource: '[READ] Binary-log configuration, GTID mode, and connected downstream replicas'. This clearly identifies what the tool does and distinguishes it from sibling tools like replica_status or show_variables.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention prerequisites, related tools, or scenarios where this should be preferred. The only usage hint is the optional target parameter.

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