@sentientui/mcp

MCP server for SentientUI — gives AI agents in Claude Code, Cursor, and Copilot direct access to your experiment data and management actions.

Quick start

Prefer no key? You can skip local install entirely and connect your assistant to the hosted endpoint by URL with an OAuth sign-in — this is the only way to use SentientUI from web/app assistants (claude.ai, ChatGPT):

https://api.sentient-ui.com/mcp

Claude Code: claude mcp add --transport http sentientui https://api.sentient-ui.com/mcp. For stdio-only clients: npx mcp-remote https://api.sentient-ui.com/mcp. The rest of this README covers the local, key-based install below.

1. Get a server key

Dashboard → Project → Settings → API key → Server key → Generate (requires Starter or Growth plan).

2. Add to your AI assistant

Claude Code — one command:

claude mcp add sentientui -e SENTIENTUI_API_KEY=sk_your_key_here -- npx -y @sentientui/mcp

Or check a project-scoped .mcp.json into your repo:

{
  "mcpServers": {
    "sentientui": {
      "command": "npx",
      "args": ["-y", "@sentientui/mcp"],
      "env": {
        "SENTIENTUI_API_KEY": "sk_your_key_here"
      }
    }
  }
}

Cursor — ~/.cursor/mcp.json:

{
  "mcpServers": {
    "sentientui": {
      "command": "npx",
      "args": ["-y", "@sentientui/mcp"],
      "env": {
        "SENTIENTUI_API_KEY": "sk_your_key_here"
      }
    }
  }
}

VS Code + Copilot — .vscode/mcp.json:

{
  "servers": {
    "sentientui": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@sentientui/mcp"],
      "env": {
        "SENTIENTUI_API_KEY": "sk_your_key_here"
      }
    }
  }
}

3. Restart your IDE. The server connects at startup.

Related MCP server: Pakunoda-MCP

Demo mode

No account? Run without an API key:

npx @sentientui/mcp

A sandboxed demo token is provisioned automatically — 10 calls/month, read-only (write tools require an account with an sk_ key), no sign-up required. The token is cached in ~/.config/sentientui/mcp-anon.json.

Tools

Generated versions. An <Adaptive id="…"> that wraps your original as children (no variants) registers as a personalizable region once it is mounted and deployed. Its versions per visitor type are written in SentientUI — inspect and fill them with get_cell_matrix, get_cell_detail, and generate_cell — with no code change or redeploy.

Code-native vs no-code variants. Variants you declare in your app (<Adaptive variants={{…}}>) register automatically the first time the SDK requests an assignment after you deploy — they go live immediately and need no create_variant call. Use create_variant only for no-code variants whose content is stored in SentientUI and rendered without a code change; these start as drafts you activate from the dashboard.

Optimizing a component? Call get_variant_brief first. It returns each variant's rate with its sample and the server's evidence verdict, the audience, measured findings, and an evidence-state assessment — then your AI assistant writes a new on-brand variant directly into your code (which auto-registers on deploy). While nothing is decided, the brief falls back to best-practice priors for your project's context type so the assistant still makes a sensible change.

Example prompts

• "What projects do I have?"

• "Show me the CVR trends for the hero banner this week"

• "Are any variants paused by the guardrail right now?"

• "What do the AI insights say about what changed this week?"

• "Refresh insights for project X"

• "Optimize my hero CTA — pull the brief and add a new variant in the code"

• "Create a new variant called 'short-copy' for the pricing CTA"

Configuration

Auth model

The server key you provide is passed as a Bearer token on every call to the SentientUI management API. It is scoped to your account — all projects you own are accessible. Keys are never logged or stored by the MCP package; they exist only in the process environment.

Server keys start with sk_ (not pk_). Public keys (pk_) are for the React SDK only and will be rejected by the management API.

AI agent context

AGENTS.md (included in this package) gives your AI assistant deeper context about SentientUI concepts, tool ordering, and common pitfalls. Wire it up once and it applies to every conversation.

Requirements

• Node.js 18+

• A SentientUI account (or use demo mode)