MCP Server

Getting Started

Connect Launch Fast to Claude or Codex desktop, then ask questions about your Amazon business in plain language.

Before You Start

You need a Launch Fast account with active paid access that includes MCP. Growth and Scale include it; Starter does not. Older plans can have a different billing name. See plan access and usage.

MCP is the connection that lets your AI assistant call Launch Fast tools. You do not need to know tool names or write code.

For product and market research: you do not need an Amazon Seller Central or Amazon Ads connection. Go to connect your AI app. The authenticator requirement below applies to private Amazon reports.

Prepare For A Sales And Ads Review

Follow these steps in order, even if you already use Launch Fast:

1. In Launch Fast, open Settings → Authentication. Under Authenticator app, choose Set up authenticator if it is not set up. Follow the setup and verification prompts. The tab is named Authentication, not Security.
2. Open Settings → Amazon. If you see Verify and unlock, complete verification. Use Connect Amazon seller to connect Amazon Seller Central, and Connect Amazon Ads to connect your advertising account. These are separate connections: connecting one does not connect the other.
3. Allow the initial data sync to finish. Allow up to 60 minutes as an initial-sync estimate, not a guarantee. Amazon report availability and the amount of history can make it take longer. Check data readiness before treating a report as complete.
4. Add Launch Fast in Claude or Codex desktop. Sign in, choose the permissions for your review, and complete any authenticator verification in the Launch Fast browser page.
5. Start a conversation and ask for a sales or Sponsored Products review. Use the test prompts below.

If you only need sales reports, connect Seller Central. If you only need Sponsored Products reports, connect Amazon Ads. A review combining sales, inventory, and ads needs both.

Check Data Readiness

1. Open Settings → Amazon and unlock it if prompted.
2. Check the relevant account shows Connected. This confirms authorization; it does not confirm all reports have arrived.
3. For Seller Central, check Last sync where shown. For Ads, check the relevant profile's sync status. Starting, Loading history, Scheduled, or Syncing means you should check again. Synced includes a timestamp when one is available.
4. Ask the assistant to check the available dates and sync information for the report you need. Confirm the correct seller account, marketplace, and Ads profile. A sync timestamp alone does not prove your entire requested date range is available.

Reports can arrive at different times. Recent sales, finance, Brand Analytics, and Ads results may still be incomplete. Ads-attributed sales can change after the click date. Try a completed, slightly older period and keep any missing dates visible in the answer.

Connect Your AI App

Use this server URL:

https://launchfastlegacyx.com/api/mcp/server

Claude And Claude Desktop Setup

1. Open Customize → Connectors → Add custom connector.
2. Enter Launch Fast in Name and paste the server URL into Remote MCP server URL. Choose Continue and follow the connection prompts.
3. Sign in to Launch Fast in the browser page that opens.
4. Choose permissions, choose Continue, and complete any authenticator verification on Launch Fast.
5. Return to Claude. Make sure Launch Fast is available and enabled for the conversation you want to use.

Codex Desktop Setup

1. Open Settings → Plugins. Open Add, then choose Add MCP server.
2. Enter Launch Fast in Name. Choose Streamable HTTP and paste the server URL into URL. Choose Add server.
3. Follow the browser sign-in prompt for Launch Fast. If Codex offers a sign-in action after adding the server, use it to finish connecting.
4. Choose permissions, choose Continue, and complete any authenticator verification on Launch Fast.
5. Return to Codex and start a conversation with Launch Fast available.

These desktop paths use browser sign-in. You do not need JSON files, terminal commands, or an API key.

Choose Permissions

The Launch Fast page asks you to choose what your AI app can use. Select only what you need:

The screen also offers separate Brand Analytics permissions. Select those for the corresponding reports. Manage rank tracking allows changes to Launch Fast rank trackers; you do not need it for a sales or ads review.

1. Select the permissions for your request. Keep any required permissions selected together.
2. Choose Continue.
3. If asked, enter the six-digit code from your authenticator on the Launch Fast verification page. Do not paste the code into the AI conversation.
4. Return to the AI app and finish connecting. If a needed permission is unavailable, check the related Amazon connection and reauthorize Launch Fast.

Test The Connection

For sales:

Use Launch Fast to review my Amazon sales for the last 7 complete days. State the exact dates, account, marketplace, and available sync information. Show the available sales and top products. Flag missing or unsynced data; do not report it as zero sales.

For ads:

Use Launch Fast to review my Sponsored Products performance for the last 30 complete days. State the exact dates and Ads profile. Summarize available spend, attributed sales, and campaign performance. Explain reporting delays and missing data; do not treat missing data as zero spend.

For research without Amazon connections:

Use Launch Fast to research the Amazon market for silicone spatulas. Show the returned product data and label revenue estimates as estimates.

Success State

The assistant must actually call Launch Fast and return available data for the requested account and date range. Check the tool activity in your AI app and the result it returned. A plausible answer, specific numbers, or a connected badge alone does not confirm a working report connection.

If the tool returns an error, missing data, or an incomplete period, the assistant should say so. Missing or unsynced data is not zero sales or zero spend. Use Troubleshooting if the check fails.

API Key Setup For Developer Clients

Use this separate alternative only when your client needs an API key or custom HTTP headers. Client configuration formats vary; the example below is for clients that accept mcpServers JSON.

1. Open Launch Fast Settings → Amazon and complete Verify and unlock if prompted.
2. Under MCP API keys, choose Generate new key, name it, and choose Generate key. Copy the key when shown and keep it private.
3. Configure the remote server and send the key in the X-LaunchFast-API-Key header.
4. Reload your client's MCP configuration. Follow any browser verification link returned for Amazon reports.

{
  "mcpServers": {
    "launchfast": {
      "type": "http",
      "url": "https://launchfastlegacyx.com/api/mcp/server",
      "headers": {
        "X-LaunchFast-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Never paste a real key into chat or a public file. See Authentication for the difference between API-key verification and desktop authorization.