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

With no annotations provided, the description carries full burden. It discloses the tool is low-risk ([risk:low]), returns top 5 results by relevance, and includes specific fields. It does not mention rate limits or error behavior, but for a simple search tool, this is adequate.

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 sentences, front-loaded with the core purpose, and no wasted words. Every sentence adds essential information.

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 simple search tool with one parameter, the description is complete: it explains what the tool does, what it returns (top 5, specific fields), and that no account is needed. No output schema exists, but the return format is described. No gaps remain.

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 100%, but the description adds value with concrete search term examples ('goroutine leak detection', 'pandas merge on index'), helping the agent understand the expected input format and context beyond the schema's generic description.

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?

Clearly states 'Search Stack Overflow questions by keyword' with specific verb and resource. Distinguishes from sibling tools like duvera__dev_npm_package by its focus on Stack Overflow, and mentions return fields (title, link, score, answer status) and limit of top 5.

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?

Indicates 'No account required', which is a clear usage condition. However, it does not explicitly mention when to use this tool versus alternatives (e.g., wiki_search) or when not to use it. Still, the context is clear enough for most agents.

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