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exec

Run shell commands in an isolated Linux sandbox with configurable timeout, working directory, and stdin input.

Instructions

Execute a shell command in the sandbox.

Args: command: Shell command to run (e.g., "ls -la", "echo hello", "cat /etc/os-release") timeout: Max seconds to wait (default 30) workdir: Working directory inside the sandbox (default /workspace) stdin: Optional input to pipe into the command's stdin sandbox: Named sandbox to use (default "default")

Returns: Command output with stdout, stderr, exit code, and execution time.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
commandYes
timeoutNo
workdirNo/workspace
stdinNo
sandboxNodefault

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations are provided, so the description carries full burden. It explains the sandbox context, parameters, and return values (stdout, stderr, exit code, time). However, it omits potential risks like destructive commands or permission details, leaving transparency incomplete.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is highly concise, using a clear bulleted list. Every sentence provides necessary information without redundancy or fluff.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (5 parameters, output with multiple fields), the description covers all essential aspects: parameters, defaults, return info, and sandbox usage. It is self-contained and sufficient for an agent to invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description adds significant value by explaining each parameter: command with examples, timeout default, workdir default, stdin optional, sandbox default. This goes beyond the schema's minimal titles and defaults.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Execute a shell command in the sandbox' with examples, making the verb and resource explicit. It distinguishes from siblings like 'python' or 'read_file' by focusing on arbitrary shell commands.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not explicitly provide when to use or avoid this tool versus alternatives. It implies usage by showing examples, but lacks guidance on when not to use it or mentions of sibling tools.

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

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