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Documentation Index

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Monitors EVM blocks for anomalies including unusual transaction counts, oversized blocks, abnormal event volumes, gas usage spikes, and liveness issues.

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Functionality

  • Transactions Count (min/max): Conditions for min and max transaction count in a block
  • Transactions Gas (min/max): Conditions for min and max gas used in a transaction. Use GasMonitor for more gas related monitors
  • Events Count (min/max): Conditions for min and max events count in a block
  • Block size: Conditions for block size (min/max)
  • Gas: Large and small Gas usage in block
  • Block Frequency: Expected Block frequency (max/min) (msec). This information is extracted from block timestamps
  • Liveness: Liveness check for block generation. Alert is triggered if no blocks are generated within the condition (e.g. > 25000 means block is expected within 25 sec)
  • Block Latency: Track block latency. It is updated every 10 min

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Configuration

DetectorBlockAnomaly Configuration
  • Transactions min (tx_min, default: <1): Minimal transaction count in a block. See condition syntax.
  • Transactions max (tx_max, default: >2000): Maximal transaction count in a block. See condition syntax.
  • Events min (event_min, default: <1): Minimal Events count in a block. See condition syntax.
  • Events max (event_max, default: >3000): Maximal Events count in a block. See condition syntax.
  • Block size min (block_min, default: <100): Minimal block size. See condition syntax.
  • Block size max (block_max, default: >10000000): Maximal block size. See condition syntax.
  • Gas min (gas_min, default: <22000): Minimal gas used in a block. See condition syntax.
  • Gas max (gas_max, default: >29999000): Max gas used in a block. See condition syntax.
  • Gas min (Tx) (tx_gas_min, default: <20000): Minimal gas used in a Transaction. See condition syntax.
  • Gas max (Tx) (tx_gas_max, default: >10000000): Max gas used in a Transaction. See condition syntax.
  • Cron (cron, default: 1 sec): Periodic check interval for anomalies. See cron configuration.
  • Track Latency (lat_enabled, default: false): Enable tracking of block latency (updated every 10 min).
  • Block Freq (min) (block_freq_min, default: <1000): Min expected block creation interval in milliseconds. See condition syntax.
  • Block Freq (max) (block_freq_max, default: >12500): Max expected block creation interval in milliseconds. See condition syntax.
  • Liveness interval (liveness, default: > 25000): Alert if no block is generated within this threshold (ms). See condition syntax.
  • Severity (severity, default: Auto): Alert severity level. See severity configuration.
Supported networks: evm.