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ping

Test connectivity and verify the Gemini MCP Tool server is operational by sending a message and receiving an echo response.

Instructions

Echo

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
promptNoMessage to echo

Implementation Reference

  • The execute handler for the ping tool, which constructs a message and runs it via executeCommand("echo").
    execute: async (args, onProgress) => {
      const message = args.prompt || args.message || "Pong!";
      return executeCommand("echo", [message as string], onProgress);
    }
  • Zod input schema defining the 'prompt' parameter for the ping tool.
    const pingArgsSchema = z.object({
      prompt: z.string().default('').describe("Message to echo "),
    });
  • Registration of pingTool (and other tools) by pushing to the toolRegistry.
    toolRegistry.push(
      askGeminiTool,
      pingTool,
      helpTool,
      brainstormTool,
      fetchChunkTool,
      timeoutTestTool
    );
Behavior1/5

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. 'Echo' suggests a simple return of input, but it doesn't disclose any behavioral traits such as whether this is a read-only operation, if there are rate limits, authentication requirements, or what format the response takes. The description provides minimal information beyond the basic implication of the word 'echo'.

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

Conciseness3/5

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

The description is extremely concise with just one word, but this represents under-specification rather than effective brevity. While there's no wasted text, the single word doesn't provide enough information to be genuinely helpful. The structure is minimal but lacks the front-loaded clarity needed for tool selection.

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

Completeness2/5

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

Given the simple nature of the tool (1 optional parameter, no output schema, no annotations), the description is incomplete. While the tool isn't complex, 'Echo' alone doesn't provide enough context for an AI agent to understand when and how to use this tool effectively compared to alternatives. The description should do more to explain the tool's role in the context of the available sibling tools.

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?

The input schema has 100% description coverage, with the single parameter 'prompt' clearly documented as 'Message to echo'. Since there are 0 required parameters, the baseline is 4. The description 'Echo' doesn't add meaningful semantic context beyond what the schema already provides, but the schema coverage is comprehensive for this simple tool.

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

Purpose2/5

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

The description 'Echo' is a tautology that essentially restates the tool name 'ping' without providing meaningful clarification. While 'echo' implies returning input, it doesn't specify what resource is being acted upon or distinguish this from sibling tools like 'ask-gemini' or 'brainstorm'. The purpose remains vague rather than specific.

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

Usage Guidelines1/5

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

No guidance is provided about when to use this tool versus alternatives. The description doesn't mention any context, prerequisites, or exclusions. With sibling tools like 'ask-gemini' and 'brainstorm' available, there's no indication of when 'ping' would be the appropriate choice versus those other 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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