NestDaddy

LiveVariant

io.github.livevariant/livevariant · v0.1.5

Build, inspect and read adaptive A/B tests. Config travels in the URL; no account or API key needed.

Connect Remote server

Terminal
claude mcp add --transport http livevariant https://livevariant.com/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "livevariant": {
      "url": "https://livevariant.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "livevariant": {
      "type": "http",
      "url": "https://livevariant.com/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://livevariant.com/mcp

Tools 9 found in our last check

  • build_test

    Creates a LiveVariant test and returns every URL needed to run it, plus a freshly generated stats secret. Pass `variants` to test one element, or `slots` to test several at once (hero image AND call-to-action, say). With slots the test optimizes the COMBINATION: one model learns…

  • inspect_test

    Decodes a test and describes it: slots, variants, context, and whether it can be served by redirect. Also lints it for the mistakes that only show up once a campaign is out, such as an email test whose context comes from geo (which a mail proxy answers about itself). Use this be…

  • generate_priors

    Takes YOUR estimate of how each variant will perform and converts it into the prior the model starts from, so a test does not spend its first visitors rediscovering what you already suspect. You supply the guess; this does the arithmetic and the capping. That capping is the poin…

  • get_stats

    Fetches a test's results and works out what they mean. Alongside the raw counts it returns the probability that each combination is genuinely best and the expected cost of stopping now and keeping the leader. Use those rather than comparing conversion rates by eye: a variant ahe…

  • get_test_status

    Reports what the deployment's registry knows about a test: whether it is claimed into an account (and by which organization), and whether each redirect destination is a verified domain. Unverified destinations work, but visitors see a 'Redirecting you to…' continue screen first.…

  • list_tests

    Lists tests registered to the signed-in account, newest first, with cursor pagination and an optional case-insensitive name filter. Only exists on deployments with accounts, and only answers for an identified caller: unlike every other tool, WHOSE tests these are cannot be expre…

  • register_test

    Registers a test you built earlier to the organization a publishable key belongs to, so it shows under My tests and its stats are readable from the dashboard without the secret. Use this only when the user provides both the test's stats secret and a publishable key for an organi…

  • upload_image

    Uploads an image to the deployment's asset store and returns its URL, for use as a variant's `image` (email tests) or `url`. The returned URL is deliberately not fetchable on its own: assets are only served with a short-lived signature that the serve endpoints mint per request,…

  • variant_brief

    Returns the constraints to write or generate test variants against, for email or web, plus the rules that decide whether a test can be read at all once it runs. The one that matters most: one idea per slot. To vary two elements, give the test two slots and let it learn the combi…

Details

Endpointhttps://livevariant.com/mcp (Streamable HTTP)
Package@livevariant/[email protected] (NPM, stdio)
First published27 Aug 2026
Last updated27 Aug 2026
Registry nameio.github.livevariant/livevariant

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