# MCP Server Inspector

> MCP Server Inspector is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Connects to a remote MCP server as a client and returns its name, version, instructions, capabilities, and full tool list with descriptions and parameters — without invoking any tool.

## Facts

- Endpoint: POST https://api.vextorium.com/mcp-inspeccionar-pago?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mcp-server-inspector-158e5291
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tLoFa-Z3kywxIpBUR6cNp

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-inspector-158e5291 -d '<json body>'
```

Example prompt: Before I connect to the MCP server at https://mcp.deepwiki.com/mcp, can you inspect it and tell me its name, version, what capabilities it supports, and list all the tools it exposes along with their descriptions and parameters?

## When to prefer this

Choose this endpoint when you need to discover and audit what a remote MCP server offers before committing to calling its tools — especially useful for unknown or untrusted servers. It is ideal for agent orchestration pipelines that need to dynamically route to the right tool, for security audits of third-party MCP servers, or for building catalogs of available MCP capabilities. Prefer this over manually calling the MCP server's initialize handshake when you want a clean, structured JSON summary without side effects.

## Known failure modes

- MCP server URL is unreachable or returns non-200 — accesible will be false with no tool data
- Target server does not implement the MCP Streamable HTTP protocol — may return empty or malformed response
- Invalid URL format in request body causes schema validation error
- Server is accessible but exposes zero tools — returns empty herramientas array
- Network timeout if the remote MCP server is slow to respond

## How this service works

Connect to a remote MCP server (Streamable HTTP) as a client and return its name, version, instructions, capabilities and tool list with descriptions and parameters, without calling any tool. Know what an MCP server offers before trusting it.

## Output

Returns a JSON object with: the server URL, a server object (name, version), an accessibility boolean, the MCP protocol version string, a list of capability names, server instructions text, the total number of tools, and an array of tool objects each containing a name, description, parameter list, and required parameters array.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "url": {
       "type": [
        "string",
        "null"
       ]
      },
      "servidor": {
       "type": [
        "object",
        "null"
       ],
       "properties": {
        "name": {
         "type": [
          "string",
          "null"
         ]
        },
        "version": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      },
      "accesible": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "protocolo": {
       "type": [
        "string",
        "null"
       ]
      },
      "capacidades": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "string"
        ]
       }
      },
      "herramientas": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "object"
        ],
        "properties": {
         "nombre": {
          "type": [
           "null",
           "string"
          ]
         },
         "parametros": {
          "type": [
           "array",
           "null"
          ],
          "items": {
           "type": [
            "null",
            "string"
           ]
          }
         },
         "descripcion": {
          "type": [
           "null",
           "string"
          ]
         },
         "obligatorios": {
          "type": [
           "array",
           "null"
          ],
          "items": {
           "type": [
            "null",
            "string"
           ]
          }
 
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://mcp.deepwiki.com/mcp",
  "servidor": {
   "name": "DeepWiki",
   "version": "2.14.3"
  },
  "accesible": true,
  "protocolo": "2025-06-18",
  "capacidades": [
   "experimental",
   "prompts"
  ],
  "herramientas": [
   {
    "nombre": "ask_wiki_question",
    "parametros": [
     "question",
     "repoName"
    ],
    "descripcion": "Ask any question about a GitHub repository's codebase and get an AI-powered answer\ngrounded in its DeepWiki.",
    "obligatorios": [
     "repoName",
     "question"
    ]
   },
   {
    "nombre": "read_wiki_contents",
    "parametros": [
     "repoName"
    ],
    "descripcion": "View documentation about a GitHub repository.",
    "obligatorios": [
     "repoName"
    ]
   }
  ],
  "instrucciones": "DeepWiki MCP provides AI-powered documentation for GitHub repositories.\n\nAvailable tools:\n- read_wiki_structure: Get a list of documentation topics for a repository\n- read_wiki_contents: View full documentation about a repository\n- ask_wiki_question: Ask any question about a repository's codebase an…",
  "herramientas_total": 3
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mcp-server-inspector-158e5291/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)