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Run Sydium from your terminal: publish, schedule, cancel, list accounts, and pull analytics without opening the app. Handy for cron jobs, CI, and quick one-offs. (It calls the REST API under the hood.)

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Install

npm install -g @sydium/cli
The binary is sydium. Verify it: 
sydium --help

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Authenticate

The CLI uses an API key. Grab one from your Sydium account settings, then: 
sydium auth:login --key sk_live_...
This saves your key locally. Check it any time: 
sydium auth:status

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Quick start

# what's connected
sydium accounts:list

# publish now to two platforms
sydium posts:create --platforms x,linkedin --caption "Shipping > talking."

# schedule for later
sydium posts:create --platforms linkedin --caption "Recap thread" --schedule-at 2026-07-01T09:00:00Z

# pull last month's analytics
sydium analytics:get --from 2026-06-01 --to 2026-06-30

All commands

The full command and flag reference.