How do I install the Fly skill?

Run npx skillmds@latest add melvynx/fly in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Which AI agents work with Fly?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

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melvynx (@melvynx) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Fly by melvynx — Agent Skill

Name: Fly
Author: melvynx

File contents

fly

Setup

macOS:

brew install flyctl

Linux:

curl -L https://fly.io/install.sh | sh

Verify installation:

fly --version

Always use --json flag when calling commands programmatically (where supported).

Authentication

fly auth login

Check auth status:

fly auth whoami

Resources

Apps

Command	Description
`fly launch`	Create and configure a new app
`fly apps list`	List all apps
`fly apps create <name>`	Create a new app
`fly apps destroy <name>`	Destroy an app
`fly status`	Show app status
`fly info`	Show app details

Deploy

Command	Description
`fly deploy`	Deploy the app
`fly deploy --image <image>`	Deploy a specific Docker image
`fly deploy --strategy rolling`	Deploy with rolling strategy
`fly releases`	List recent releases

Logs

Command	Description
`fly logs`	Stream app logs
`fly logs --app <name>`	Stream logs for a specific app

Scaling

Command	Description
`fly scale count 2`	Scale to 2 instances
`fly scale vm shared-cpu-1x`	Set VM size
`fly scale vm shared-cpu-1x --memory 512`	Set VM size with memory
`fly scale show`	Show current scale settings
`fly regions list`	List available regions
`fly regions add <region>`	Add a region

Secrets

Command	Description
`fly secrets list`	List all secrets
`fly secrets set KEY=value`	Set a secret
`fly secrets set KEY1=val1 KEY2=val2`	Set multiple secrets
`fly secrets unset KEY`	Remove a secret

Volumes

Command	Description
`fly volumes list`	List all volumes
`fly volumes create <name> --size 1`	Create a volume (size in GB)
`fly volumes create <name> --size 1 --region <region>`	Create volume in specific region
`fly volumes destroy <id>`	Destroy a volume
`fly volumes extend <id> --size 5`	Extend volume size

Certificates

Command	Description
`fly certs list`	List all certificates
`fly certs create <domain>`	Add a certificate for a domain
`fly certs show <domain>`	Show certificate details
`fly certs delete <domain>`	Remove a certificate

Machines

Command	Description
`fly machine list`	List all machines
`fly machine start <id>`	Start a machine
`fly machine stop <id>`	Stop a machine
`fly machine destroy <id>`	Destroy a machine
`fly machine status <id>`	Show machine status

SSH and Proxy

Command	Description
`fly ssh console`	Open SSH console to the app
`fly ssh console --command "ls -la"`	Run a command via SSH
`fly proxy 5432`	Proxy a port to local machine
`fly proxy 5432:5432`	Proxy with explicit local:remote ports

Global Flags

Flag	Description
`--json`	Output result as JSON
`--app <name>`	Specify app name
`--config <path>`	Path to fly.toml config file
`--region <region>`	Specify region
`--verbose`	Enable verbose output

---name: flydescription: Deploy and manage Fly.io apps via CLI - apps, machines, volumes, secrets, certificates. Use when user mentions 'fly', 'flyctl', 'fly.io', or wants to deploy on Fly.io.---# fly## SetupmacOS:```bashbrew install flyctl```Linux:```bashcurl -L https://fly.io/install.sh | sh```Verify installation:```bashfly --version```Always use `--json` flag when calling commands programmatically (where supported).## Authentication```bashfly auth login```Check auth status:```bashfly auth whoami```## Resources### Apps| Command | Description ||---------|-------------|| `fly launch` | Create and configure a new app || `fly apps list` | List all apps || `fly apps create <name>` | Create a new app || `fly apps destroy <name>` | Destroy an app || `fly status` | Show app status || `fly info` | Show app details |### Deploy| Command | Description ||---------|-------------|| `fly deploy` | Deploy the app || `fly deploy --image <image>` | Deploy a specific Docker image || `fly deploy --strategy rolling` | Deploy with rolling strategy || `fly releases` | List recent releases |### Logs| Command | Description ||---------|-------------|| `fly logs` | Stream app logs || `fly logs --app <name>` | Stream logs for a specific app |### Scaling| Command | Description ||---------|-------------|| `fly scale count 2` | Scale to 2 instances || `fly scale vm shared-cpu-1x` | Set VM size || `fly scale vm shared-cpu-1x --memory 512` | Set VM size with memory || `fly scale show` | Show current scale settings || `fly regions list` | List available regions || `fly regions add <region>` | Add a region |### Secrets| Command | Description ||---------|-------------|| `fly secrets list` | List all secrets || `fly secrets set KEY=value` | Set a secret || `fly secrets set KEY1=val1 KEY2=val2` | Set multiple secrets || `fly secrets unset KEY` | Remove a secret |### Volumes| Command | Description ||---------|-------------|| `fly volumes list` | List all volumes || `fly volumes create <name> --size 1` | Create a volume (size in GB) || `fly volumes create <name> --size 1 --region <region>` | Create volume in specific region || `fly volumes destroy <id>` | Destroy a volume || `fly volumes extend <id> --size 5` | Extend volume size |### Certificates| Command | Description ||---------|-------------|| `fly certs list` | List all certificates || `fly certs create <domain>` | Add a certificate for a domain || `fly certs show <domain>` | Show certificate details || `fly certs delete <domain>` | Remove a certificate |### Machines| Command | Description ||---------|-------------|| `fly machine list` | List all machines || `fly machine start <id>` | Start a machine || `fly machine stop <id>` | Stop a machine || `fly machine destroy <id>` | Destroy a machine || `fly machine status <id>` | Show machine status |### SSH and Proxy| Command | Description ||---------|-------------|| `fly ssh console` | Open SSH console to the app || `fly ssh console --command "ls -la"` | Run a command via SSH || `fly proxy 5432` | Proxy a port to local machine || `fly proxy 5432:5432` | Proxy with explicit local:remote ports |## Global Flags| Flag | Description ||------|-------------|| `--json` | Output result as JSON || `--app <name>` | Specify app name || `--config <path>` | Path to fly.toml config file || `--region <region>` | Specify region || `--verbose` | Enable verbose output |

Frequently asked questions

Fly