Curl MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description only states it executes curl with custom arguments, lacking details on permissions, error handling, output format, or side effects (e.g., whether it makes network calls, has rate limits, or requires authentication). This is inadequate for a tool that likely performs external operations.

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 extremely concise with a single sentence that directly states the tool's function. It is front-loaded and wastes no words, making it easy to parse quickly.

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 the complexity of executing curl commands (which can involve network operations, various arguments, and potential side effects), the description is incomplete. With no annotations, no output schema, and minimal behavioral details, it fails to provide sufficient context for safe and effective use, especially compared to more specific sibling tools.

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 schema description coverage is 100%, with the single parameter 'args' documented as 'Array of curl arguments (excluding 'curl' itself)'. The description adds minimal value beyond this, only implying that arguments are custom and for advanced usage, without explaining syntax or examples. Baseline 3 is appropriate since the schema does the heavy lifting.

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 'Execute curl with custom arguments (advanced usage)' states the action (execute curl) and resource (custom arguments), but is vague about what 'advanced usage' entails. It doesn't clearly distinguish this tool from its siblings like curl_get or curl_post, which likely handle specific HTTP methods, while this one appears to be a generic wrapper.

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 no guidance on when to use this tool versus alternatives. It mentions 'advanced usage' but doesn't specify what makes it advanced or when it's preferred over the sibling tools (curl_get, curl_post, etc.). There are no explicit when/when-not instructions or named alternatives.

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