Fly.io

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At a glance

• Availability: Experimental (how to enable).
• Authentication: API key.
• Connection: The key comes from FLY_API_TOKEN.
• Provider documentation: Authentication reference.

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Credentials

Set these per environment. See Connect an integration.

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Setup

1. Sign up for Fly.io: Go to https://fly.io and create an account (the pay-as-you-go plan with a small test app is sufficient; new accounts include trial credit).
2. Create an access token: Run ‘fly tokens create org -o <org-slug>’ with flyctl, or create a token in the dashboard under Account > Access Tokens (https://fly.io/dashboard/personal/tokens). Org tokens are preferred over personal auth tokens.
3. Set the environment variable: Add the token to your .env as FLY_API_TOKEN=…
4. Verify access: Run List Apps with your org slug (use ‘personal’ for the default personal organization), then List Machines on one of the apps.

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Provider notes

• The public Machines API endpoint is https://api.machines.dev; tokens are sent as ‘Authorization: Bearer <token>’
• org_slug is required when listing apps
• Tokens created with ‘fly tokens create’ may include a ‘FlyV1 ’ prefix in CLI output - store only the token value; the API accepts it after Bearer either way

Provider API reference.

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Tools

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Verify the connection

Call a read tool such as fly-io__list_apps with arguments for your account. Confirm that the result comes from the intended account or workspace before enabling write tools.