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Vellium & Co Testing Lab

by velliumandco.com · remote · no sign-in to list tools · v1.0.0 · published by com.velliumandco

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

Changes · 5
CompareRegistry entry

9 tools: 5 change things and 4 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http lab https://velliumandco.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

9 tools

Changes things 5Claude Code: ask
  • batchCheck up to 25 sellers and 25 websites in one call (cheapest for many checks).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Check up to 25 sellers and 25 websites in one call (cheapest for many checks).
  • changesWhat changed since a day — keep a local copy in sync.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    What changed since a day — keep a local copy in sync.
  • check_sellerOur 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 pro…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    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).
  • check_websiteCan AI agents use this shopping or travel website?No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Can AI agents use this shopping or travel website? Plain-agent access, each AI agent at the door, robots rules, llms.txt, history.
  • sellers_on_domainEvery paid seller we check on one host.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Every paid seller we check on one host.
Only reads 4Claude Code: allow
  • find_routeWhere 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).No findings

    Why it is in this group

    • The name "find_route" says "find": a word for reading.
    Description, as the server wrote it
    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.
  • list_categoriesEvery category of paid service agents buy, with sellers, buyers and how we check it; names in your language with lang.No findings

    Why it is in this group

    • The name "list_categories" says "list": a word for reading.
    Description, as the server wrote it
    Every category of paid service agents buy, with sellers, buyers and how we check it; names in your language with lang.
  • list_websitesRated websites, filtered by market (e.g.No findings

    Why it is in this group

    • The name "list_websites" says "list": a word for reading.
    Description, as the server wrote it
    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).
  • search_sellersFind paid x402 data services AI agents can buy, inside one category, ranked.No findings

    Why it is in this group

    • The name "search_sellers" says "search": a word for reading.
    Description, as the server wrote it
    Find paid x402 data services AI agents can buy, inside one category, ranked. Use before paying any seller.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http lab https://velliumandco.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__lab__search_sellers",
      "mcp__lab__list_categories",
      "mcp__lab__find_route",
      "mcp__lab__list_websites"
    ],
    "ask": [
      "mcp__lab__check_seller",
      "mcp__lab__sellers_on_domain",
      "mcp__lab__check_website",
      "mcp__lab__batch",
      "mcp__lab__changes"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as lab. Review it before you use it.