execute_code

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 mentions a 'secure sandboxed environment' and cost, but does not describe what the execution returns, how results are formatted, error behavior, environmental limits (beyond the timeout parameter), or persistence/state. This is a significant gap for a code execution tool.

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 a single front-loaded sentence that covers the essential information: sandboxing, supported languages, and cost. There is no redundant or wasteful text.

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 has no output schema and no annotations, so the description must provide context about execution outcomes. It does not explain the return format, whether stdout/stderr are captured, or how errors surface. The description is too sparse for an agent to reliably predict the tool's behavior after invocation.

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 already provides 100% parameter descriptions and a language enum. The description's language list simply mirrors the schema enum, adding no new meaning. Cost is mentioned but is not a parameter. Baseline 3 is appropriate.

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 action ('Execute code') and resource ('secure sandboxed environment'), and lists supported languages. It is easily distinguishable from all sibling tools, none of which involve code execution.

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 provides clear context: it is a sandboxed code execution tool with language support and cost implications. It does not explicitly mention when not to use it or name alternatives, but the uniqueness among siblings reduces the need for exclusions.

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