Mcp Inspect
by Vextorium in Security & trust
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.
https://api.vextorium.com/v1/mcp-inspect- Price
- $0.005
- per call in USDC
- Uptime
- 0.0%
- last 30 days
- Response time
- -
- no timed checks yet
- Last check
- Failed
- 4 h ago, next any minute now
Reliability
Latest check failed 4 h ago: Amount "0.005" is not in atomic token units
Status and outage history · Atom feed · Watch with other listings
How to call it
POST https://api.vextorium.com/v1/mcp-inspect
Each call costs $0.005 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
POST https://api.vextorium.com/v1/mcp-inspect
content-type: application/json
{
"url": "https://mcp.deepwiki.com/mcp"
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
url | string | Yes |
Example response
The provider's example. We can't check it without paying.
Example response, 39 lines
{
"accessible": true,
"capabilities": [
"experimental",
"prompts"
],
"instructions": "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…",
"protocol": "2025-06-18",
"server": {
"name": "DeepWiki",
"version": "2.14.3"
},
"tools": [
{
"description": "Ask any question about a GitHub repository's codebase and get an AI-powered answer\ngrounded in its DeepWiki.",
"name": "ask_wiki_question",
"parameters": [
"question",
"repoName"
],
"required": [
"repoName",
"question"
]
},
{
"description": "View documentation about a GitHub repository.",
"name": "read_wiki_contents",
"parameters": [
"repoName"
],
"required": [
"repoName"
]
}
],
"total_tools": 3,
"url": "https://mcp.deepwiki.com/mcp"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/mcp-inspect' \
-H 'content-type: application/json' \
--data-raw '{"url":"https://mcp.deepwiki.com/mcp"}'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.vextorium.com/v1/mcp-inspect' \
-H 'content-type: application/json' \
--data-raw '{"url":"https://mcp.deepwiki.com/mcp"}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fmcp-inspect&method=POST
const res = await pay("https://api.vextorium.com/v1/mcp-inspect", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"url": "https://mcp.deepwiki.com/mcp"
}),
});
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.post(
"https://api.vextorium.com/v1/mcp-inspect",
json={
"url": "https://mcp.deepwiki.com/mcp",
},
)
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 4 h ago | Amount "0.005" is not in atomic token units | 402 | 148 ms | $0.005 |
| 9 h ago | Amount "0.005" is not in atomic token units | 402 | 95 ms | $0.005 |
| 14 h ago | Amount "0.005" is not in atomic token units | 402 | 89 ms | $0.005 |
| 18 h ago | Amount "0.005" is not in atomic token units | 402 | 145 ms | $0.005 |
| 23 h ago | Amount "0.005" is not in atomic token units | 402 | 125 ms | $0.005 |
Show 10 older checks
| 28 h ago | Amount "0.005" is not in atomic token units | 402 | 90 ms | $0.005 |
| 33 h ago | Amount "0.005" is not in atomic token units | 402 | 96 ms | $0.005 |
| 37 h ago | Amount "0.005" is not in atomic token units | 402 | 89 ms | $0.005 |
| 42 h ago | Amount "0.005" is not in atomic token units | 402 | 224 ms | $0.005 |
| 47 h ago | Amount "0.005" is not in atomic token units | 402 | 227 ms | $0.005 |
| 2 days ago | Amount "0.005" is not in atomic token units | 402 | 226 ms | $0.005 |
| 2 days ago | Amount "0.005" is not in atomic token units | 402 | 90 ms | $0.005 |
| 3 days ago | Amount "0.005" is not in atomic token units | 402 | 76 ms | $0.005 |
| 3 days ago | Amount "0.005" is not in atomic token units | 402 | 86 ms | $0.005 |
| 3 days ago | Amount "0.005" is not in atomic token units | 402 | 118 ms | $0.005 |