it.get_system_config

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

With no annotations provided, the description carries the full burden. It clearly indicates a read-only operation and specifies the returned data types, which is useful. However, it does not disclose potential side effects, permission requirements, or the sensitivity of returning API keys and database URLs, nor the behavior when no key is provided or when a key is not found.

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: two short sentences totaling 14 words. It front-loads the primary action ('Read') and immediately follows with the return types. No unnecessary words or filler.

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?

The tool is simple, with one optional parameter and no output schema, so the description is reasonably sized. It explains the tool's purpose and return content, but it omits details such as the effect of leaving the key empty (though the schema covers this), error behavior, and security/prerequisite context. For a config getter, it is adequate but not fully complete.

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 description for the 'key' parameter is 100% complete, so the description adds minimal additional semantic value. It mentions 'system configuration values' but does not elaborate on the parameter's role beyond what the schema already states. Baseline of 3 is appropriate given full schema coverage.

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 ('Read') and identifies a clear resource ('system configuration values'). It further details that it returns database URLs, API keys, and other service configuration, which distinguishes it from sibling tools like it.query_audit_log or it.manage_api_tokens.

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 states what the tool does but provides no guidance on when to use it versus alternatives. Sibling tools such as it.manage_api_tokens manage API keys, and without explicit differentiation, users/agents may be uncertain whether to use this tool or the sibling for retrieving API keys. No exclusions or alternative references are given.

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