{"slug": "livevariant-io-github-livevariant-livevariant-0-1-3", "title": "LiveVariant (io.github.livevariant/livevariant@0.1.3)", "summary": "LiveVariant, an adaptive A/B testing tool that configures tests via URL without requiring an account or API key, released version 0.1.3 to the official MCP registry on 2026-08-26, distributed as @livevariant/mcp on npm and as a hosted remote over streamable-http. The tool declares three environment variables and has not yet been evaluated by the mcpindex gate, so its verdict remains REVIEW or UNVERIFIED, and agents should treat it as not-yet-cleared until a verdict is recorded.", "body_md": "[← Index](/leaderboard)\n\n# LiveVariant\n\nBuild, inspect and read adaptive A/B tests. Config travels in the URL; no account or API key needed.\n\nThe current version, v0.1.3, was published to the official MCP registry on 2026-08-26. It is distributed as @livevariant/mcp on npm and as a hosted remote over streamable-http, filed under Other by this index, and declares 3 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; [the index's current counts](/stats) put this record in context.\n\n## Using LiveVariant in Claude, Cursor, Gemini CLI, Cline, or Zed?\n\nMCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and **HOLDs the call** when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use **Install this server** for that).\n\nRewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less\n\n```\nuv tool install mcpindex-gate && mcpindex-config-wire\n```\n\n[method](/methodology)\n\nVerdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: [the eval, four-state verdict, honest limits](/methodology).\n\nOwn this server? [Screen its description →](/screen)\n\n## That verdict was true at screening time (snapshot 2026-08-26).\n\nContracts can change after screening, with no version bump. The gate pins LiveVariant’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.\n\n[See your first HOLD in 2 minutes →](/guides/install-the-gate-first-hold)\n\nRelated: [how to trust an MCP server](/guides/how-to-trust-an-mcp-server) · [screen before install](/guides/screen-mcp-server-before-install) · [silent contract drift](/guides/mcp-silent-contract-drift)\n\n`LIVEVARIANT_SERVER_URL`\n\nBase URL of a self-hosted LiveVariant deployment. Omit to use the hosted service at https://livevariant.com.\n\n`LIVEVARIANT_API_TOKEN`\n\nAPI token for a self-hosted deployment that sets LV_API_TOKEN. Not needed for the hosted service.\n\n`LIVEVARIANT_ASSET_UPLOAD_TOKEN`\n\nAsset upload token for a deployment with hosted images enabled. Optional.\n\n[methodology](/methodology)\n\n[AgentRoamai.agentroam/agentroam](/server/ai-agentroam-agentroam)\n\nBuy travel eSIMs, gift cards and mobile top-ups with crypto — user confirms before any order.\n\n[Authoryzeai.authoryze/authoryze](/server/ai-authoryze-authoryze)\n\nGive your AI agent a spending limit: approval controls and single-use virtual cards.\n\n[One Person Company OSio.github.living-hi/one-person-company-os](/server/io-github-living-hi-one-person-company-os)\n\nBuild and update a visual operating cockpit for AI-native solo founders.", "url": "https://wpnews.pro/news/livevariant-io-github-livevariant-livevariant-0-1-3", "canonical_source": "https://mcpindex.ai/server/io-github-livevariant-livevariant", "published_at": "2026-08-26 10:49:41+00:00", "updated_at": "2026-08-26 11:14:41.058895+00:00", "lang": "en", "topics": ["developer-tools"], "entities": ["LiveVariant", "MCP registry", "npm", "mcpindex"], "alternates": {"html": "https://wpnews.pro/news/livevariant-io-github-livevariant-livevariant-0-1-3", "markdown": "https://wpnews.pro/news/livevariant-io-github-livevariant-livevariant-0-1-3.md", "text": "https://wpnews.pro/news/livevariant-io-github-livevariant-livevariant-0-1-3.txt", "jsonld": "https://wpnews.pro/news/livevariant-io-github-livevariant-livevariant-0-1-3.jsonld"}}