I built a zero-dependency CLI to pause deploys when L2 gas spikes

Описание и применение

CLI‑инструмент l2gas блокирует деплой, если цена газа на L2 превышает порог, предотвращая лишние расходы.

CI pipelines deployed to Base mainnet during a gas spike, incurring high fees ($200) that went unnoticed until billing.

Deployments are now gated by real‑time gas prices, preventing accidental high‑fee deployments during L2 gas spikes.

Run npx @psicossz/l2gas to fetch real‑time gas prices for selected chains
Configure a GitHub Actions step with --threshold to exit with code 1 if any chain exceeds the limit
Use the exit code to conditionally skip the deploy step
Optionally use the reusable workflow for cleaner setup
Integrate l2gas as a library in scripts for programmatic access
Use --json for scripting and --watch for continuous monitoring

Teams without a gas gate in CI deployed contracts and paid hundreds in unnecessary fees.

The --threshold flag exits with code 1 if any chain exceeds the Gwei limit, which natively blocks a CI step.

All 7 chains queried in parallel in under 2 seconds, directly from public RPC endpoints — no API key, no rate limits, no third‑party service.