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Harmony reaches end of support

Ankr Team
Docs Team

Harmony mainnet reaches end of support on Ankr RPC. The Harmony network stopped producing blocks on 10 September 2026, after the Harmony team sunset its Layer 1 and announced a migration of the ONE token to Ethereum. We retire the rpc.ankr.com/harmony endpoint and remove Harmony from the chain list. No method limits, error codes or rate limits changed on any other network.

Deprecations and end-of-support​

Harmony mainnet, from 5 October 2026​

NetworkEndpoint retired
Harmonymainnet, rpc.ankr.com/harmony

We removed the Harmony API reference pages, and inbound links resolve to the chain list instead of returning a 404.

Worth checking on your side​

If your application still calls rpc.ankr.com/harmony, remove it from your configuration. The network itself has produced no new blocks since 10 September 2026, so there is no chain head left to follow. For the ONE token migration, follow the Harmony team's own announcements.