capnwasm playground

A world where everyone speaks Cap'n Proto. Every Cloudflare API endpoint is a dot on the orange globe at its real PoP. Click any dot — the page encodes the endpoint identity as Cap'n Proto wire bytes via capnp.slim.wasm, decodes the response from a Cloudflare Worker, and pops a bubble at the dot's lat/lng.

Loading Cloudflare endpoints…

Every dot is a real endpoint from cloudflare-openapi.json. Mouse over a row or spot to preview it; click the chat bubble to open an OpenAPI-style request dialog with Cloudflare SDK examples across languages. Run encodes the request through capnp.slim.wasm, sends it to the Worker, and returns a mock response.

OpenAPI request

Endpoint

Example payload

Choose a language tab, edit the payload, then run.

Mock response