rapidcheck.io

What It Is

RapidCheck is a developer/operations tool that combines uptime monitoring with attack surface management. It not only checks whether websites, APIs, ports, and DNS are available, but also discovers externally exposed assets such as forgotten subdomains, open ports, weak TLS, Shadow IT, and certificate expiration risks. In positioning, it is closer to a combined SRE monitoring and lightweight ASM platform.

Core Capabilities

For availability monitoring, RapidCheck supports HTTP/HTTPS, TCP, Ping/ICMP, DNS, keyword checks, and JSON assertions. Paid plans can run checks at 10-second intervals, while the Enterprise plan can go down to 5 seconds. The platform claims to have 300+ edge nodes across 6 continents, and uses cross-region confirmation to reduce false positives from single-location probes. It also provides real-browser flow checks, which can cover issues that status codes alone cannot detect, such as login and checkout problems. For certificates, domains, and DNS, it can track certificate chains, WHOIS expiration, and DNS drift. Alerts support Slack, PagerDuty, Email, SMS, Webhooks, and API, with on-call scheduling, automatic escalation, and maintenance windows.

Pricing and Deployment

Pricing is fairly straightforward: the Free plan is available permanently with no credit card required, and includes 3 monitors, 5-minute intervals, and 1 status page. Pro costs $29/month and includes 50 monitors, 10-second intervals, 5 branded status pages, and 1 year of data retention. Enterprise is custom-priced, offering unlimited monitors and seats, SSO/SCIM, a 99.9% SLA, audit logs, a dedicated success manager, and private edge regions. The text does not specify payment methods, nor does it clearly state whether self-hosting is supported.

Pros and Cons

The main advantage is its broad feature coverage: uptime monitoring, status pages, certificate/DNS monitoring, and attack surface discovery are integrated into a single interface, which helps reduce tool switching. The Free plan has a low barrier to entry, and the Pro price is attractive for small and midsize teams. The drawbacks are that the company’s location, open-source status, payment methods, and network accessibility from China are not disclosed. The API is mentioned only briefly, without SDK or documentation details. Browser check quotas are also not clearly listed in the pricing table.

Who It’s For and Access from China

RapidCheck is suitable for SaaS teams, SREs, DevOps teams, security teams, and companies with production websites/APIs that need public status pages and external exposure checks. Access from China cannot be determined from the available text, so it is recommended to try the Free plan to test probe nodes, alerting channels, and the payment flow. If access is limited in mainland China, alternatives to compare include UptimeRobot, Better Stack, Pingdom, Datadog Synthetic Monitoring, Grafana Cloud, or local cloud monitoring solutions.