Get eToro portfolio summary

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

The description explicitly marks the operation as 'read-only' and lists the exact return fields, which is sufficient behavioral disclosure for a no-parameter read. Since there are no annotations, this is a key safety hint provided directly.

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?

One concise sentence that is front-loaded with the main output and immediately clarifies read-only status.

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 parameterless read-only tool without an output schema, the description fully covers the returned metrics and the account scope. No additional context is necessary.

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 tool has zero parameters, so the description needs no parameter specifics. The baseline of 4 applies.

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 returns portfolio-level metrics (total value, invested, unrealized P&L, available cash) for the real eToro account. However, it does not explicitly differentiate from sibling tools like etoro_holdings or etoro_raw_pnl, though the listed metrics imply a summary 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?

There is no guidance on when to choose this tool over siblings such as etoro_holdings or etoro_raw_pnl. The description simply lists what is returned without any usage context or exclusions.

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