# MCP Server Probe

> MCP Server Probe is a paid API for AI agents from gogeta2-u35175.vm.elestio.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Performs a real MCP Streamable HTTP handshake (initialize + tools/list) against a remote MCP endpoint to check reachability, protocol version, available tools, schemas, latency, and OAuth metadata.

## Facts

- Endpoint: GET https://gogeta2-u35175.vm.elestio.app/agents/v1/agent/mcp-probe?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mcp-server-probe-0209ea67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VJOKXGzv-rCxinz5HniMH

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mcp-server-probe-0209ea67
```

Example prompt: Can you probe the MCP server at https://mcp.deepwiki.com/mcp and tell me if it's reachable, what protocol version it uses, and which tools it exposes?

## When to prefer this

Use this endpoint when you need to non-destructively discover what an MCP server offers — its tools, schemas, protocol version, and auth config — before committing to a full connection or tool invocation. Prefer this over a generic HTTP probe when you specifically need MCP protocol-level introspection (initialize + tools/list handshake) rather than just HTTP reachability.

## Known failure modes

- Target URL is unreachable or times out — returns connection error with latency
- Remote server does not speak MCP protocol — returns handshake failure or parse error
- OAuth metadata endpoint absent — returns null for OAuth fields
- Invalid or malformed URL provided — returns input validation error
- Remote server requires auth even for initialize — returns 401/403 with auth details if extractable

## How this service works

Real MCP Streamable HTTP handshake (initialize + tools/list, no tool call): reachability, protocol version, tools, schemas, latency, OAuth metadata.

## Output

Returns reachability status, MCP protocol version negotiated during handshake, full list of tools with their names and input schemas, round-trip latency measurement, and any OAuth/authorization server metadata discovered from the endpoint — all without invoking any tool call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Remote MCP endpoint, e.g. https://mcp.deepwiki.com/mcp"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mcp-server-probe-0209ea67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gogeta2-u35175.vm.elestio.app](https://www.zero.xyz/host/gogeta2-u35175.vm.elestio.app/llms.txt)