Authentication
Launch Fast supports browser-based OAuth for Claude Connectors and API key authentication for developer MCP clients.
At A Glance
Claude Connectors
Use OAuth. Sign in to Launch Fast in the browser and approve the connector.
Developer clients
Use an API key from Launch Fast Settings → Authentication.
Both authentication methods use the same remote MCP endpoint:
https://launchfastlegacyx.com/api/mcp/serverOAuth
OAuth is used by claude.ai and Claude Desktop through Claude Connectors. You sign in to Launch Fast in the browser and approve the connector. Claude receives a connector authorization, not your Launch Fast password.
Use OAuth when your MCP client supports remote connectors or opens a browser sign-in flow.
API Keys
API key authentication is for Claude Code, Cursor, Windsurf, or another config-based MCP client.
Generate MCP API keys in Launch Fast from Settings → Authentication, then send the key in this header:
X-LaunchFast-API-Key: YOUR_API_KEYDo not share API keys in chat, screenshots, support tickets, public repos, or config examples. If a key is exposed, revoke it in Launch Fast settings and create a replacement key.
Access Requirements
| Requirement | Details |
|---|---|
| Launch Fast plan | MCP requires a paid Launch Fast plan with MCP enabled. Current MCP-enabled entitlement plans are Growth and Scale. |
| Starter plan | Starter does not include MCP access. |
| Amazon Account Tools | Require connected Amazon Seller Central/SP-API data inside Launch Fast. |
| Amazon Ads Tools | Require a connected Amazon Ads account and synced reporting data. |
OAuth or API key authentication lets Claude connect to Launch Fast MCP. Sales, inventory, finance, Brand Analytics, and Amazon Ads tools still require the relevant Amazon connection inside Launch Fast.
Technical Review Details
Most sellers do not need the details below. They are included for connector review, allowlisting, and technical debugging.
Security Notes
- Use HTTPS only.
- Do not share API keys.
- Revoke old keys if a device is lost.
- Launch Fast only returns data available to the authenticated Launch Fast user.
- The MCP server does not receive your Launch Fast password through Claude OAuth.