acme.sh Open-Source Shell ACME Certificate Automation

Explore this developer service’s ongoing no-cost allowance, restrictions and official documentation before deploying.

INCLUDED FREE ALLOWANCE

GPL-3.0 licensed local Unix shell ACME client to issue, renew and install TLS certificates with webroot, standalone and DNS validation; supports DNS provider API integrations and automatic scheduled renewal without a software license fee.

View official documentation

Plan details

What do these plan and deployment labels mean?

Plan: Ongoing free allowance
Deployment model: Local / embedded
Credit card: Not required
Commercial use: Allowed
Added to directory (UTC): 2026-11-03
Last checked: 2026-11-01

Important restrictions

Not free domain registration, managed DNS, hosting or a guarantee of free certificates from every CA. Own server and domain validation required; DNS API/provider fees, ACME CA restrictions and infrastructure costs may apply. Manual DNS mode cannot renew unattended; GPL-3.0 conditions apply to redistribution.

View official documentation

Independent community listing, not affiliated with the provider. Always check the latest billing policy and quotas before enabling paid usage.