MCP Gemini API 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. It states the tool executes a prompt via Gemini CLI but lacks critical behavioral details: what happens on timeout, how maxOutputKB truncates output, error handling, rate limits, or authentication needs. For a tool with no annotations and potential execution risks, this is insufficient disclosure.

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, efficient sentence that directly states the tool's purpose with zero wasted words. It's appropriately sized and front-loaded, making it easy to parse quickly. Every word earns its place.

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 no annotations, no output schema, and a tool that executes external commands (implying potential side effects), the description is incomplete. It doesn't cover return values, error conditions, or safety considerations. For a tool with this complexity and lack of structured data, more context is needed to be fully helpful.

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 the schema already documents all three parameters (prompt, maxOutputKB, timeout) with their types and defaults. The description adds no additional parameter semantics beyond what's in the schema (e.g., prompt format examples or timeout implications). Baseline 3 is appropriate as 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 clearly states the action ('Execute') and the resource ('a raw prompt'), specifying it's done 'without file context using Gemini CLI'. This distinguishes it from siblings like analyze_files or analyze_directory that involve file operations. However, it doesn't explicitly contrast with all siblings (e.g., get_config/set_config).

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 minimal guidance: it mentions 'without file context', implying this tool is for text-only prompts. However, it doesn't specify when to use this versus alternatives (e.g., for simple queries vs. complex analyses), nor does it mention prerequisites or exclusions. No explicit when/when-not or alternative tool references are provided.

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