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

With no annotations, the description carries the full behavioral burden. It usefully discloses that execution is sandboxed and that it costs 2 credits, but says nothing about whether the sandbox has network access, whether state persists between calls, what happens on timeout, or what the output looks like.

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 short, front-loaded sentences with zero waste; the core action leads and the cost constraint follows.

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 4-parameter mutation-ish tool with no annotations and no output schema, the definition is thin. It omits return values, failure/timeout behavior, and side-effect semantics that an agent would need before submitting code.

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 description coverage is 100%, so parameters, defaults, and enum values are already fully documented in the schema. The description's mention of 'pre-configured environments' loosely maps to the template parameter but adds no new syntax or meaning beyond the schema.

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?

States a specific verb (Execute) and resource (code) plus the execution environment (secure sandbox, pre-configured environments). No sibling tool overlaps with code execution, so sibling differentiation is moot, but the description never says what the sandbox can/cannot do.

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 when-to-use guidance, no prerequisites, and no statement of when this tool should be preferred over alternatives. The only extra context is a cost note, which is not selection guidance.

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