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flyctl — manage Fly.io applications, Machines, and networking from the terminal

OSS scale score 231.2OSS health 93Update pace 71 commits/30d
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Stars
1,704
Primary language
Go
License
Apache-2.0
Repository last updated
Sep 19, 2026

Overview

flyctl is the official command-line interface for Fly.io applications, Machines, deployments, secrets, networking, and related resources. After authentication, it can inspect account and app state and drive deployment workflows around `fly.toml`.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Inspect account, applications, and status from the CLI

After login, commands can list applications and inspect status and configuration for a selected app.

Sources: [2]

Expand into deployments, Machines, secrets, and networking

The CLI covers application lifecycle operations plus Fly Machines, secrets, and network-related resource management.

Sources: [1][3]

For scripting Fly.io deployment workflows locally and in CI

It fits teams that want infrastructure operations represented as project configuration and repeatable commands rather than only web-console steps.

Sources: [2]

Make the target app explicit before mutating production resources

Commands may infer an application from the current fly.toml. Multi-environment workflows should explicitly select the intended app before deployment or resource changes.

Sources: [2]

Official sources

  1. [1]superfly/flyctl repository(2026-09-21)
  2. [2]flyctl README(2026-09-21)
  3. [3]Fly.io documentation(2026-09-21)
  4. [4]flyctl v0.4.104 release(2026-09-21)
  5. [5]flyctl Apache-2.0 license(2026-09-21)
Supplemental curator note

The latest GitHub release is 0.4.104. The README notes that `flyctl` and `fly` command names coexist during a transition. Many commands infer the target application from `fly.toml` in the current directory, so multi-app workflows should make the target explicit.

Try it in 3 steps

  1. 1

    Install flyctl

    Use the package-manager path documented in the README; Homebrew works on macOS, Linux, and WSL.

    brew install flyctl
  2. 2

    Authenticate with Fly.io

    Complete browser authentication so the CLI can access the account.

    fly auth login
  3. 3

    Inspect apps and status

    Start with read-only inspection and explicitly select the application before making production changes.

    fly apps list && fly status -a <app-name>
Check the official README

Growth

Growth trends · Last 30 days

1,704 Stars

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Development activity

Last 90 days · weekly

Commits (last 30 days)
71
Open PRs
50

Development activity is still being collected.

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GitHub Topics

  • flyio-tools
Stars
1,704
Forks
311
Watchers
23
Open issues
170
Contributors
223
Primary language
Go
License
Apache-2.0
Repository last updated
Sep 19, 2026
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