Does Checkly gate pull requests?

Checkly can integrate with CI, but its core product is scheduled synthetic monitoring — not scenario-aware merge gates tied to your app's critical paths. Guard selects affected scenarios per PR and blocks merges via GitHub required checks.

Molar Guard — PR gating & production synthetics

Molar Guard vs Checkly

Q: Is Molar Guard a Checkly alternative?

For teams that need more than uptime checks: yes. Checkly excels at Playwright-native production synthetics. Molar Guard adds PR gating with affected-scenario selection, Clones-backed safe synthetics that never touch real customers, and Mender fix PRs when checks fail.

Short answer: Checkly is a strong Playwright-native synthetic monitoring platform. Molar Guard adds PR gating with affected-scenario selection, safe production synthetics backed by Clones (no real charges or emails), and Mender fix PRs — monitoring plus merge gate in one surface.

01 — SummaryMonitor vs guard

Checkly teams run browser checks on schedules, get alerts, and integrate with CI. That catches many production regressions — but it does not stop bad code from merging, and checkout/signup checks often skip real third-party behavior to avoid customer impact.

Guard spans three moments: before merge (affected E2E scenarios as a required GitHub check), after deploy (production synthetics against cloned Stripe/email), and on failure (forensic Trace + optional Mender fix PR). Same scenario graph as Cartographer and Clones — not a separate script library.

02 — TableSide-by-side

	Molar Guard	Checkly
Primary job	PR gate + prod monitor + auto-fix	Production synthetic monitoring
PR gating	Affected-scenario required check	CI integration, not core wedge
Test scripts	Agent-authored scenarios + Playwright export	Hand-written Playwright checks
Checkout / billing in prod	Clones — zero real customer impact	Often mocked or skipped
Failure response	Trace replay + Mender fix PR	Alert + dashboard
Scenario selection	Graph-aware (7 not 47 tests)	Run configured check suite
Suite integration	Cartographer, Clones, Trace	Standalone monitoring
Best for	AI-native teams shipping fast with guardrails	Dedicated synthetics + uptime

03 — FitWhen teams pick Guard

Choose Guard when merge queue goes green but production breaks, full E2E suites make CI too slow to gate, or you need billing flows exercised in production checks without touching real customers. Keep Checkly if you only need external uptime monitoring and already have separate PR quality gates.

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