Local Core HTTP bridge

kestrel web exposes Local Core's Execution Protocol through an authenticated loopback HTTP endpoint. It is a bridge for trusted local server applications, not a second runtime.

Start the bridge

Bash

kestrel web

The command ensures Local Core is ready and prints:

KESTREL_RUNNER_SERVICE_URL
KESTREL_RUNNER_SERVICE_TOKEN

Connect a local application

Bash

kestrel web
export KESTREL_RUNNER_SERVICE_URL='http://127.0.0.1:43102'
export KESTREL_RUNNER_SERVICE_TOKEN='...'
pnpm dev

The SDK uses its remote HTTP transport for this loopback URL, but execution and state remain in Local Core.

Check health and authentication

Bash

curl -sS "$KESTREL_RUNNER_SERVICE_URL/health"

If you provided a custom host, port, or token, confirm the printed exports match the values used by the local application server.

When to use this guide

Use this page when you need:

the local bridge command
the printed environment variables
a local health check

Use Connect to a runner service to compare this local bridge with a remote runner-service deployment.

Start the bridge

Connect a local application

Check health and authentication

When to use this guide

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