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Vellium & Co Testing Lab MCP Server

by velliumandco Your server? Claim it
answering

Vellium & Co Testing Lab is answering right now. Last checked 14 min ago. It exposes 9 tools.

Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites

Uptime history 5 days of history
5 days agonow
100.0%
Uptime 24h
91 of 91 checks
9
Tools
read from the server
132 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 13 October 2026. No other catalogue keeps this.

13 Oct 2 tools changed the parameters they ask for find_route, list_websites
13 Oct a tool description was rewritten find_route

Nothing serious here today

Today is the operative word: we check Vellium & Co Testing Lab every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add lab --transport http https://velliumandco.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "lab": {
      "url": "https://velliumandco.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.lab]
url = "https://velliumandco.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "lab": {
      "url": "https://velliumandco.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "lab": {
      "url": "https://velliumandco.com/mcp"
    }
  }
}

Available tools 9

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

sellers
search_sellers
Find paid x402 data services AI agents can buy, inside one category, ranked. Use before paying any seller.
sellers_on_domain
Every paid seller we check on one host.
batch
batch
Check up to 25 sellers and 25 websites in one call (cheapest for many checks).
categories
list_categories
Every category of paid service agents buy, with sellers, buyers and how we check it; names in your language with lang.
changes
changes
What changed since a day — keep a local copy in sync.
route
find_route
Where to go for a job, before you spend tokens on trial and error: the best tested free official source with its exact call and how much it returns (and a fallback). Ask in plain words, e.g. 'UK company directors', 'Apple revenue', 'EU gas storage'. detail=full adds the paid sellers we rate and other sources.
seller
check_seller
Our latest independent check of one paid seller, by its address (any spelling) or id: answering, price, buyers, and its paid answers checked against an independent record (with proof).
website
check_website
Can AI agents use this shopping or travel website? Plain-agent access, each AI agent at the door, robots rules, llms.txt, history.
websites
list_websites
Rated websites, filtered by market (e.g. 'United States', 'Japan'), plain-agent outcome (open, blocked, timeout) or price honesty (does the price agents read match what people see).

Endpoints

URLTransportStateLatencyChecked
https://velliumandco.com/mcp streamable-http answering 106 ms 14 min ago

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Vellium & Co Testing Lab — questions

Answers built from our own checks of this server.

What can Vellium & Co Testing Lab do?
It exposes 9 tools, read directly from the server on our last check. Among them: batch, changes, check_seller, check_website, find_route, list_categories and 3 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Vellium & Co Testing Lab working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 132 ms. The bar chart above shows every period we have measured.
How do I connect Vellium & Co Testing Lab?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Vellium & Co Testing Lab need an API key?
No. Vellium & Co Testing Lab completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Vellium & Co Testing Lab?
It answers our handshake in 132 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.