connect

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It describes the configuration method (environment variables) and return details (status, host, database, timestamp), but lacks information on error handling, authentication needs, or rate limits. It adequately covers basic behavior but misses advanced operational traits.

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 well-structured and front-loaded with the main purpose, followed by configuration details and return information. Each sentence adds essential information without redundancy, making it efficient and easy to parse.

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?

Given the tool's complexity (connection establishment with environment-based config) and the presence of an output schema, the description is mostly complete. It covers the purpose, configuration, and return overview, but could benefit from mentioning prerequisites or error scenarios to fully guide usage without relying on the output schema alone.

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 input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately focuses on configuration and return values, adding value beyond the empty schema by explaining how connection details are sourced from environment variables.

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 specific action ('Establish connection') and resource ('SQL Server database'), distinguishing it from siblings like disconnect, list_connections, and switch_database. It precisely defines what the tool does without being vague or tautological.

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 usage context by specifying that it connects to the database using environment variables, but it does not explicitly state when to use this tool versus alternatives like list_connections or switch_database. It provides clear setup requirements without naming specific alternatives or exclusions.

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