Crouton's status is measured by synthetic probes running from our eu-central region every 30 seconds. Each probe issues canonical health-check methods (eth_blockNumber, eth_chainId for EVM; status for Cosmos) against each chain endpoint.

Current status (the green/yellow/red badge) is classified per 1-minute bucket: a minute is green when probe success rate ≥ 95%, p95 latency stays within the chain's SLO threshold, and block lag stays within 3 blocks for EVM chains and 5 blocks for Cosmos chains.

Long-term uptime (30d/90d percentages) is calculated from hourly probe aggregates. Block lag is checked at the 1-minute granularity for current status only — hourly buckets do not include block-lag data. Uptime figures therefore reflect success rate and p95 latency across the reported window.

Latency measurements are end-to-end including TLS termination but excluding DNS resolution. We publish all incidents with at least 5 minutes of measurable impact in our probes, including those affecting only specific methods or chain regions.

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