exec_stream

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

No annotations are provided, so the description carries the full burden. It mentions streaming and real-time output but fails to disclose important behavioral traits such as whether the command is sandboxed, what user context it runs under, potential destructive side effects, or any authentication requirements. This is a significant gap for a tool that executes arbitrary commands.

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 with no wasted words. It opens with a clear one-sentence purpose, includes technical detail (API endpoint, streaming parameter), provides usage suggestions, and then documents parameters. Every sentence adds value.

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?

Given that an output schema exists (though not provided in this evaluation), the description's mention of 'streaming output collected in real-time with all events' is sufficient to set expectations. The tool has only two parameters and a straightforward purpose, so the description covers the essential context. However, it could be slightly more precise about the output format details.

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 description adds substantial meaning beyond the input schema, which has 0% description coverage. It fully describes both parameters: 'command: The command to execute' and 'timeout: Timeout in seconds (default: 3600 = 1 hour)'. This helps the agent understand the format and default value of timeout, which the schema only provides as a type and default.

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 executes a command with real-time streaming output via SSE. It specifies the action ('Execute a command'), the resource ('command'), and the output format. It also provides examples of use cases like nmap, nuclei, and fuzzing, which distinguish it from sibling tools that target specific tasks.

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 explicitly says 'Useful for long-running commands like nmap, nuclei, fuzzing,' which guides when to use this tool. However, it does not mention when not to use it or provide explicit alternatives, leaving some ambiguity for the agent.

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