# universalcartmerchantgate-mcp

A hosted MCP server that checks whether a store is ready for Universal Cart, sorts out checkout blockers and exports the readiness log.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI
- Author: clauxel
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/clauxel/universal-cart-merchant-gate-mcp
- Updated: 2026-05-20
- HTML: https://affpapa.org/en/nevibecode/mcp/universalcartmerchantgate-mcp

## What it does

The endpoint is `https://universalcartmerchantgate.clauxel.com/mcp`, served over streamable HTTP. Five tools ship with it: `check_universal_cart_readiness` for store readiness, `classify_checkout_blocker` for sorting a checkout failure into a class, `explain_offer_gap` for gaps between offer and expectation, `issue_agentic_commerce_receipt` for a structured receipt, and `export_readiness_log` for the log. Tool output is structured, so it drops into a report or passes along an agent chain without cleanup.

Production calls need a bearer token. The public server card sits at `https://universalcartmerchantgate.clauxel.com/server-card.json`, and the registry name is `com.clauxel.universalcartmerchantgate/universalcartmerchantgate-mcp`. Get that token first. Without it your production requests simply fail, and you would be wiring the server into a config for nothing.

The repository holds documentation only — no production source, no payment configuration, no customer records. Commerce teams, merchant operations, marketplace owners and agentic checkout reviewers are the intended users.

## Requirements
- Remote server: `https://universalcartmerchantgate.clauxel.com/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http universalcartmerchantgate-mcp https://universalcartmerchantgate.clauxel.com/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add universalcartmerchantgate-mcp --url https://universalcartmerchantgate.clauxel.com/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "universalcartmerchantgate-mcp": {
            "url": "https://universalcartmerchantgate.clauxel.com/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "universalcartmerchantgate-mcp": {
            "type": "http",
            "url": "https://universalcartmerchantgate.clauxel.com/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http universalcartmerchantgate-mcp https://universalcartmerchantgate.clauxel.com/mcp
```

## When to use it
- check whether a store is ready for Universal Cart
- pin down what blocks a checkout
- explain a gap between an offer and what the buyer expects
- issue a structured receipt for an agentic purchase
- export the readiness log

## Example prompts
- Check this store's Universal Cart readiness and tell me what is missing
- Classify why checkout is failing and name the blocker type
- Export the readiness log for the past week

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