What is OpenZeppelin Relayer and Monitor?
Open-source relayer and monitor tooling for transaction submission, alerts, and operational automation.
Product notes
OpenZeppelin Relayer and Monitor
Open-source relayer and monitor tooling for transaction submission, alerts, and operational automation.
Reviewed July 3, 2026. Crypto.club does not provide investment, tax, legal, custody, or security incident-response advice.
Quick checks
Fast checks before deeper diligence
Category fitDeveloper Platforms, Security Tools, Developer Ops
Network / rail signalEVM networks, Solana, Stellar
Commercial modelOpen-source tooling; operating costs depend on hosting, maintenance, alerting, and support model.
Review freshnessJuly 3, 2026
Fit
Best for
Teams migrating away from Defender or evaluating self-hosted relayer and monitoring workflows.
Decision notes
- Do not treat the old Defender SaaS as a new-vendor option; OpenZeppelin documents the Defender shutdown path.
- Evaluate hosting, key custody, alert routing, signer policy, and maintenance ownership before relying on the tools.
- Run migrated relayers and monitors in parallel before retiring an existing production workflow.
Supported networks / rails
Coverage notes
EVM networksSolanaStellarRelayer and monitor deployments
Verification habit
Confirm before use
Before relying on OpenZeppelin Relayer and Monitor, confirm the current official docs, pricing, account eligibility, supported networks, API limits, custody model, and support process. Product pages on Crypto.club are buyer notes for comparison, not live service-status pages or assurance reports.
Buying record
What to save before choosing OpenZeppelin Relayer and Monitor
A useful review leaves a short trail: the current docs, the pricing shape, the integration risk, and the alternative you ruled out. That record matters more than a vendor landing page.
Source links4 official or product-owned pages to reopen before a renewal, migration, or sales call.
Commercial fitPricing: Open-source tooling; operating costs depend on hosting, maintenance, alerting, and support model; free tier: Yes, open-source tooling is documented; teams own hosting and operations.
Implementation riskCheck API support, network coverage, custody model, and the support path against your own workload.
AlternativesCompare at least one product in the same category before treating OpenZeppelin Relayer and Monitor as the only fit.
FAQ
Common product questions
Who is OpenZeppelin Relayer and Monitor best for?
Teams migrating away from Defender or evaluating self-hosted relayer and monitoring workflows.
Does OpenZeppelin Relayer and Monitor custody user funds?
Self-hosted operational tooling; transaction authority depends on configured signers, relayers, and internal controls.
Sources