lego Open-Source ACME Client and DNS-01 Automation

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

INCLUDED FREE ALLOWANCE

MIT-licensed local Go ACME client and library for issuing, renewing and revoking TLS certificates, with DNS-01, HTTP-01 and TLS-ALPN-01 validation and 200+ DNS-provider integrations; no software license fee or vendor usage quota.

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

This is local certificate automation, not a free managed DNS, CDN, hosting or paid certificate authority plan. Requires control of domains and DNS/HTTP validation; domain registration, DNS provider APIs, paid CAs, infrastructure and operational costs may apply. ACME issuer rate limits and provider-specific policies apply.

View official documentation

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