⚡️ Slim

Simple command to get clean HTTPS local domains for your projects

myapp.test        → localhost:3000
myapp.test/api    → localhost:8080
dashboard.test    → localhost:5173
app.loc           → localhost:4000

Install

curl -sL https://slim.sh/install.sh | sh

or build from source

git clone https://github.com/kamranahmedse/slim.git
cd slim
make build
make install

Requires Go 1.25 or later.

Quick Start

Create a custom HTTPs Domain for local development using slim start

slim start myapp --port 3000
# https://myapp.test → localhost:3000

To share your local project on a public URL

slim share --port 3000
# https://cheeky-panda.slim.show

Local Usage

Start or stop a local service using slim start or slim stop

slim start myapp --port 3000
slim start api --port 8080
slim stop myapp                  # stop one domain
slim stop                        # stop all domains

If you don't specify the TLD, you get a .test domain. Specify a full domain to use any TLD:

slim start app.loc --port 3000   # https://app.loc → localhost:3000
slim start my.demo --port 4000   # https://my.demo → localhost:4000

Note: Avoid .local — it's reserved for mDNS and can cause slow DNS resolution on macOS/Linux.

Route different URL paths to different upstream ports on a single domain:

slim start myapp --port 3000 --route /api=8080 --route /ws=9000

Define all services for a project in a .slim.yaml file at the project root:

services:
  - domain: myapp
    port: 3000
    routes:
      - path: /api
        port: 8080
  - domain: dashboard
    port: 5173
  - domain: app.loc
    port: 4000
log_mode: minimal  # full | minimal | off
cors: true         # enable CORS headers on proxied responses

slim up                              # start all services
slim up --config /path/to/.slim.yaml # specify a config path
slim down                            # stop all project services

Internet Sharing

Expose a local server to the internet with a public slim.show URL. Requires slim login first.

slim share --port 3000                              # random subdomain
slim share --port 3000 --subdomain demo             # https://demo.slim.show
slim share --port 3000 --password secret            # password protected
slim share --port 3000 --ttl 30m                    # auto-expires after 30 minutes
slim share --port 3000 --domain myapp.example.com   # custom domain

Logs and Diagnostics

slim list                # inspect running domains
slim list --json

slim logs                # view access logs
slim logs --follow myapp # tail logs for a domain
slim logs --flush        # clear log file

slim doctor              # run diagnostic checks

$ slim doctor
  ✓  CA certificate        valid, expires 2035-02-28
  ✓  CA trust              trusted by OS
  ✓  Port forwarding       active (80→10080, 443→10443)
  ✓  Hosts: myapp.test    present in /etc/hosts
  !  Daemon                not running
  ✓  Cert: myapp.test     valid, expires 2027-06-03

Updating

Run slim update to update to latest version.

Uninstall

Remove everything: CA, certs, hosts entries, port-forward rules, config

slim uninstall

License

PolyForm Shield 1.0.0 © Kamran Ahmed