Every hosted MCP request requires an API key.
Get a key
Create a key
On the API Keys page, create a key. Keys start with sk_live_.
Store it as an environment variable
Treat the key like a password — keep it out of git and client-side code. MCP authentication
Connect to https://mcp.vespper.com/mcp with your key in the Authorization header:
How you set this depends on your stack — see the Quickstart for Cursor, Codex CLI, Gemini CLI, Copilot CLI, Claude Desktop, SDK, and raw MCP client examples.
Security
Never commit API keys to git or expose them in client-side code. Keys authenticate as the account owner and count toward usage credits.
