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Vellium & Co Testing Lab

R0· no sign-in

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

v1.0.0 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality88good
Trust83of 100
Uptime, 30 days100%
Latency p50232 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "lab": {
      "type": "http",
      "url": "https://velliumandco.com/mcp"
    }
  }
}
claude mcp add --transport http lab https://velliumandco.com/mcp
[mcp_servers.lab]
url = "https://velliumandco.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lab": {
      "type": "remote",
      "url": "https://velliumandco.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "lab": {
      "type": "http",
      "url": "https://velliumandco.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=lab&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdmVsbGl1bWFuZGNvLmNvbS9tY3AifQ%3D%3D"
}
{
  "servers": {
    "lab": {
      "type": "http",
      "url": "https://velliumandco.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "lab": {
      "httpUrl": "https://velliumandco.com/mcp"
    }
  }
}
extensions:
  "lab":
    enabled: true
    name: "lab"
    type: streamable_http
    uri: "https://velliumandco.com/mcp"
    timeout: 300

Quality 88 / 100good

protocol100 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • pass
    protocol.list_ttltool list is cacheable (ttlMs 3600000)
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: sellers_on_domain (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); check_seller (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_websites (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 1,049 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changes4 tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

9 tools, about 1,049 tokens to load them all · tool set b8876d9cabeb · tools last changed 2026-10-14 · checked 2026-10-20 14:21 UTC

Tool changes

  • find_routechangeddescription, input schema
    before

    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 a fallback), beside the paid sellers we rate for the same job. Ask in plain words, e.g. 'UK company directors', 'Apple revenue', 'EU gas storage'.

    after · 80% of words in common

    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_websiteschangedinput schema
  • find_routeadded

    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 a fallback), beside the paid sellers we rate for the same job. Ask in plain words, e.g. 'UK company directors', 'Apple revenue', 'EU gas storage'.

  • list_websiteschangeddescription, input schema
    before

    Rated websites, filtered by market (e.g. 'United States', 'Japan') or plain-agent outcome (open, blocked, timeout).

    after · 63% of words in common

    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).

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 83 / 100

no-repository
provenance55
liveness100
freshness100
hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-9d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://velliumandco.com/mcp streamable-httpnoneyes100%232 ms2026-07-28, 2025-11-25, 2025-06-18, 2025-03-26, 2024-11-052026-10-20

Tools (9)

batchCheck 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.
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 proof).
check_websiteCan AI agents use this shopping or travel website? Plain-agent access, each AI agent at the door, robots rules, llms.txt, history.
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). 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.
list_websitesRated 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. Use before paying any seller.
sellers_on_domainEvery paid seller we check on one host.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.velliumandco/lab",
  "title": "Vellium & Co Testing Lab",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://velliumandco.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://velliumandco.com/",
  "description": "Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites"
}