OpenZeppelin Defender
OpenZeppelin Defender (hosted ops platform) reached its planned final shutdown on July 1, 2026; sign-ups closed 2025-06-30. Migrate to the open-source OpenZeppelin Monitor and Relayer.
About
OpenZeppelin Defender was a hosted operations platform for smart contract administration, monitoring, and incident response, with automated transaction execution, multisig support, and alerting. OpenZeppelin closed sign-ups on 2025-06-30 and set the final shutdown for July 1, 2026; the defender-sdk repository is archived. Its replacements are the open-source OpenZeppelin Monitor and Relayer (Rust; EVM, Solana, and Stellar).
Categories
Monitoring Threat Detection
Chains
ethereum polygon arbitrum optimism base bnb-chain avalanche fantom
Quick Info
- Pricing
- freemium
- Open Source
- No
- Last validated
- Oct 2026