egx_market_overview

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

The description uses 'Get' to imply a read-only operation and lists the data categories, but it does not explicitly state safety characteristics, response structure, pagination, or data freshness. Since no annotations are provided, more behavioral disclosure would be beneficial, though nothing contradicts the likely safety profile.

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 concise and front-loaded with the main purpose, then directly transitions to an Args section with clear formatting. Every sentence earns its place, with no redundant or filler content.

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 description covers the tool's purpose and parameter semantics thoroughly, which is sufficient for a simple market-overview tool. However, without an output schema, it does not describe the return format (e.g., a list of dictionaries), and it lacks explicit usage guidance relative to sibling tools. Still, the core information is present and well-structured.

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 Args section provides detailed semantic meaning for both parameters: timeframe lists all valid values and defaults ('One of 5m, 15m, 1h, 4h, 1D, 1W, 1M (default 1D for stocks)'), and limit clarifies its purpose and upper bound ('Number of stocks per category (max 20)'). This fully compensates for the 0% schema description 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 clearly states the tool's function: 'Get a comprehensive overview of the Egyptian Exchange (EGX) market' and specifies exactly what it shows (top gainers, top losers, most active). This distinguishes it from sibling tools like top_gainers/top_losers, which are narrower in scope.

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 'comprehensive overview' phrasing implies usage for a broad market snapshot, but there is no explicit guidance on when to prefer this tool over its siblings or when not to use it. No alternative tools are named, leaving the agent to infer the appropriate context.

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