Prototype · Preview: every server in the official registry, synced every 30 minutes. Sign in with Google to write reviews.Prototype · updated every 30 min
PopNx MCPMCP servers for people who use AI · explained in plain words

LiveVariant

by livevariantversion 0.1.5i★ 2 (Stars for the whole repo)iComputer or cloud
Registry nameio.github.livevariant/livevariant

How to install

What it does

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

  • Connects Computer or cloud
  • Account or key Cloud: No key needed · Local: Needs LIVEVARIANT_API_TOKEN
  • Category Other

Install

Pick the AI app you use, then copy the settings.

Passed 5/5 checks · What you ask goes through the maker’s server (livevariant.com) · ✓ Commands checked Nov 14, 2026

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it

  1. Open Claude’s Connectors page

    CustomizeConnectors

    CustomizeConnectors1Add2https://…3Add4
  2. Click “Add” → “Custom” → “Web” and fill in these 2 fields

    Copy each value into the field with the same name in Claude, then click Continue

    Name · NameLiveVariant
    Remote MCP server URL · Addresshttps://livevariant.com/mcp

    Click Continue past the sign-in settings Claude detected · under Authentication choose what the maker says (Sign in now, Sign in when needed or No sign in), then click Add

  3. Turn it on in a chat

    +ConnectorsLiveVariant

  4. Try it

    Use LiveVariant and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using LiveVariant or shows a LiveVariant tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with ChatGPT, depending on your plan

Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only

  1. Open ChatGPT’s add-MCP page on the web

    Plugins+Add custom MCP server

    ChatGPTPlugins1+2https://…3Create4
  2. Fill in the name and address

    Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin

    Name · NameLiveVariant
    Connection · Addresshttps://livevariant.com/mcp
  3. Pick LiveVariant in a chat

    Start a new chat and pick LiveVariant from your plugins before typing

  4. Try it

    Use LiveVariant and tell me what you can do for me, then show me one thing

    ✓ If ChatGPT says it is using LiveVariant or shows a LiveVariant tool in the answer, you are connected

Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Claude Code · about 2 min

No key, nothing to install

  1. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  2. Paste this command and press Enter

    claude mcp add --transport http --scope user livevariant https://livevariant.com/mcp
  3. Type /mcp in Claude Code

    You should see LiveVariant listed as connected

  4. Try it

    Use LiveVariant and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using LiveVariant or shows a LiveVariant tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 2 min

No key, nothing to install

  1. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  2. Open the AI chat in Cursor in Agent mode

  3. Try it

    Use LiveVariant and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using LiveVariant or shows a LiveVariant tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 2 min

No key, nothing to install

  1. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  2. Open the AI chat in VS Code in Agent mode

  3. Try it

    Use LiveVariant and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using LiveVariant or shows a LiveVariant tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://livevariant.com/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use LiveVariant💬 Discussion →
For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http --scope user livevariant https://livevariant.com/mcp

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "livevariant": {
      "url": "https://livevariant.com/mcp"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "livevariant": {
      "type": "http",
      "url": "https://livevariant.com/mcp"
    }
  }
}

Installed on your computer

Claude Code

claude mcp add --scope user livevariant --env LIVEVARIANT_API_TOKEN=your-value -- npx -y @livevariant/mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "livevariant": {
      "command": "npx",
      "args": [
        "-y",
        "@livevariant/mcp"
      ],
      "env": {
        "LIVEVARIANT_API_TOKEN": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "livevariant": {
      "command": "npx",
      "args": [
        "-y",
        "@livevariant/mcp"
      ],
      "env": {
        "LIVEVARIANT_API_TOKEN": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "livevariant": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@livevariant/mcp"
      ],
      "env": {
        "LIVEVARIANT_API_TOKEN": "your-value"
      }
    }
  }
}

Values you fill in

  • LIVEVARIANT_SERVER_URL env
    Base URL of a self-hosted LiveVariant deployment. Omit to use the hosted service at https://livevariant.com.
  • LIVEVARIANT_API_TOKEN secret required env
    API token for a self-hosted deployment that sets LV_API_TOKEN. Not needed for the hosted service.
  • LIVEVARIANT_ASSET_UPLOAD_TOKEN secret env
    Asset upload token for a deployment with hosted images enabled. Optional.

Descriptions are as written by the maker.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub starsi
2 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings
Downloads per weeki
216/wk
Licencei
AGPL-3.0
Connection
Computer or cloud
Transport
stdio, streamable-http
Latest versioni
0.1.5
Categoryi
Other
Published to registryi
Aug 27, 2026
Code last changedi
Sep 17, 2026
Maker
livevariant
Packages
npm: @livevariant/mcp
Registry status
Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

Run on your computer in

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

All apps, with pros and cons →

Related guides

What it can do

Tool names and descriptions exactly as the server reported them on Nov 12, 2026. The maker wrote them, not us; we show them as plain text.

  • 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 bef

  • 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 point

  • 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 ahea

  • 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 expres

  • 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 organiz

  • 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, s

  • 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 combin

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 15, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account livevariant, which owns the repo

  • ✓ Pass

    Still maintained

    Code last changed 2 months ago

  • ✓ Pass

    Has a licence

    Uses AGPL-3.0

  • ✓ Pass

    Endpoint responds

    Responded in 421 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 9 tool descriptions and found no hidden instructions to the AI

Published vulnerabilities (OSV.dev)

No entries on OSV.dev for @livevariant/mcp@0.1.5

Checks only this package version, not every dependency · checked Nov 15, 2026

What we check → · JSON

Makers: ask for a re-check or report wrong info

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

Sign in to post

User reviews

No reviews yet

Sign in to write a review

Compared with others in Otheri

  • More stars than 0% of the other 19905 servers in this category
  • Published to the registry more recently than 26% of the other 19905 servers in this category
  • Basic checks equal to or better than 100% of the other 19905 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is LiveVariant safe?

It passed 5 of 5 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: LIVEVARIANT_API_TOKEN

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed 2 months ago, and the latest version (0.1.5) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT on the web (full MCP on Business and above; Pro read-only).

What can I use instead?

In the same category: World Monitor, openstatus, Oh My Posh Validator, Strata, Jitsu

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

World Monitor

Real-time global intelligence on conflict, markets, energy, trade, shipping and cyber. 97 tools.

by koala73Widely used★ 90.7KUpdated yesterday

Runs in the cloud✓ service owner · worldmonitor.app

openstatus

Manage monitors, status pages, incidents and maintenances in your openstatus workspace.

by openstatusHQWidely used★ 9.3KUpdated 2 months ago

Runs in the cloud✓ service owner · openstatus.dev

Oh My Posh Validator

Validate oh-my-posh configurations and segment snippets against the official schema.

by JanDeDobbeleerWidely used★ 23.8K Stars for the whole repoUpdated 26 days ago

Runs in the cloud✓ service owner · ohmyposh.dev

Strata

MCP server for progressive tool usage at any scale (see https://klavis.ai)

by Klavis-AIGrowing★ 5.8KUpdated 14 months ago

Runs in the cloudRepo archived✓ klavis.ai

Jitsu

Manage Jitsu data pipelines: destinations, streams, connections, functions, live events.

by jitsucomWidely used★ 5.1KUpdated 4 months ago

Runs in the cloud✓ service owner · jitsu.com
  • World Monitor — Runs in the cloud, nothing to install · No key needed
  • openstatus — Runs in the cloud, nothing to install · No key needed
  • Oh My Posh Validator — Runs in the cloud, nothing to install · No key needed
  • Strata — Runs in the cloud, nothing to install · No key needed
  • Jitsu — Runs in the cloud, nothing to install · No key needed

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@livevariant/mcp

MCP server for LiveVariant: build, inspect and read adaptive A/B tests from Claude, ChatGPT, Copilot or any MCP client.

npx -y @livevariant/mcp

Set runtime environment variables before starting the MCP server when you point it at a self-hosted deployment:

  • LIVEVARIANT_SERVER_URL: the deployment origin to call.
  • LIVEVARIANT_API_TOKEN: the deployment's LV_API_TOKEN, when /mcp or /api/v1/* is gated.
  • LIVEVARIANT_ASSET_UPLOAD_TOKEN: the deployment's LV_ASSET_UPLOAD_TOKEN, when /assets is gated.

The hosted endpoint at https://livevariant.com/mcp offers the same tools with nothing installed.

Part of livevariant/livevariant; the repository README covers the whole system. AGPL-3.0.