Playground
Validate configurations, simulate requests, and visualize how Zentinel routes traffic
Choose a template to get started, or write your own configuration below
Configuration
Request
No agents detected in configuration
Add agents and filters blocks to your config to simulate agent decisions
Request & Response Flow
Request Flow
Click "Simulate Request" to see the routing flow
Response Flow
Response flow will appear here
Detailed Trace
Simulation results will appear here
Real Engine, Real Results
This isn't a simulation — it's the actual Zentinel routing engine compiled to WebAssembly and running directly in your browser. The same Rust code that powers production proxies is executing here: config parsing, route matching, load balancer selection, and policy evaluation.
Because Zentinel is written in Rust, we can compile the core engine to WASM with zero compromises — giving you an accurate, interactive preview of exactly how your configuration will behave.
Take the same engine home. Run configs locally with any WASI-compatible runtime.
Run with Wasmtime:
# Install wasmtime
curl https://wasmtime.dev/install.sh -sSf | bash
# Validate a config file
wasmtime zentinel_playground.wasm validate config.kdl
# Simulate a request
wasmtime zentinel_playground.wasm simulate config.kdl \
--method GET --path /api/users --host example.com