MCP server

Endpoint: https://kilowatt.sh/mcp · Transport: streamable HTTP (JSON responses, no SSE) · Auth: none · Protocol versions: 2025-06-18, 2025-03-26, 2024-11-05

Add it

claude mcp add --transport http kilowatt https://kilowatt.sh/mcp

Other clients: add a remote HTTP MCP server with that URL.

Tools

Tool	Arguments	Returns
`create_checkout`	`plan` (`pro`/`lite`), `email`, `ref`	`checkout_url` (Stripe Checkout, 30 min) for your human to open and pay
`join_waitlist`	`email` (required), `use_case`, `plan` (`pro`/`lite`/`undecided`), `ref`	Position, founding flag, message, counts
`waitlist_status`	none	Founding spots reserved and left, whether checkout is open
`get_plans`	none	Plans and fair-use limits
`get_models`	none	Model lineup

Calls made through MCP are recorded as agent signups. Only submit an email you are authorized to use. Never complete a payment without your human's explicit approval; create_checkout only returns a link.

Raw JSON-RPC

curl -s https://kilowatt.sh/mcp -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"waitlist_status","arguments":{}}}'

GET https://kilowatt.sh/mcp returns a JSON description of the server.

Agents: /docs/mcp.md is this page in markdown, or request it with Accept: text/markdown.