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Sysmos

sysmos.org

From $29/mo Free plan WebLinuxAPI
Visit sysmos.org
Spec score 7.7 #22 of 27 in API Monitoring Tools

What it is

Sysmos combines distributed API health checks, Linux server observability, and a centralized monitoring dashboard. Synthetic endpoint checks run across regions and report status, SSL, latency, and timing details for DNS, TCP, TLS handshake, server processing, and content transfer. Per-phase averages and maximums are available over one-hour, 24-hour, and seven-day periods. A flow builder chains API steps, extracts variables, and applies per-step assertions; flows can run on demand or on a schedule. Its eBPF Linux agent for x86_64 and arm64 collects syscall, network, CPU, and memory data, with the maker stating CPU overhead is under 2%. Alerts can go to Slack, Discord, PagerDuty, email, or HTTP endpoints through webhooks. Workspaces provide admin, developer, and viewer roles, plus API keys for CI/CD and infrastructure-as-code. The Free plan costs nothing and includes 10 monitors, five flows, one region, a 60-second minimum interval, five members, one organization, and seven-day log retention. Team costs $29 a month; Business costs $99 a month.

Spec sheet

Product
Sysmos combines distributed API health checks, kernel-level server observability, and a centralized monitoring dashboard.Read 7 Oct 2026 · sysmos.org
Intended users
Sysmos describes itself as designed for small teams and presents the Free plan for solo developers and personal projects.Read 7 Oct 2026 · sysmos.org
Alert integrations
Built-in alert channels include Slack, Discord, PagerDuty, and email, with generic webhooks for HTTP endpoints.Read 7 Oct 2026 · sysmos.org
API flows
The flow builder chains API steps with variable extraction and per-step assertions, and flows can run on demand or on a schedule.Read 7 Oct 2026 · sysmos.org
API monitoring
It runs synthetic endpoint checks across global regions and reports latency, status, SSL, and timing breakdowns.Read 7 Oct 2026 · sysmos.org
Integration details
The integrations page says Slack uses OAuth and supports multiple workspaces, PagerDuty uses Events API v2, and webhooks support Mustache templating and retries.Read 7 Oct 2026 · sysmos.org
Latency detail
Checks break timing into DNS, TCP, TLS handshake, server processing, and content transfer, with per-phase averages and maxima over 1-hour, 24-hour, and 7-day periods.Read 7 Oct 2026 · sysmos.org
Security and residency
The homepage states that SOC 2 is in progress and that EU and US data residency are available.Read 7 Oct 2026 · sysmos.org
Server agent
Sysmos offers an eBPF Linux agent for x86_64 and arm64 that captures syscall, network, CPU, and memory data; the maker states CPU overhead is under 2%.Read 7 Oct 2026 · sysmos.org
Setup
The maker says users can add an API endpoint, install the Linux agent with one curl command, and route alerts, with setup taking under five minutes.Read 7 Oct 2026 · sysmos.org
Team access
Workspaces support admin, developer, and viewer roles, and API keys for CI/CD and infrastructure-as-code.Read 7 Oct 2026 · sysmos.org

Plans and prices

Free Free 10 API monitors · 5 flows · 1 region · 60s min interval · 5 team members · 1 organization · 7-day log retention Read 7 Oct 2026 · sysmos.org
Team $29 a month 100 monitors · 50 flows · all 12 regions · 30s interval · unlimited members · 5 orgs · 30-day retention · all integrations · server agent included Read 7 Oct 2026 · sysmos.org
Business $99 a month Unlimited monitors and flows · 10s interval · custom regions · SSO · audit logs · SLA · 1-year retention · priority support Read 7 Oct 2026 · sysmos.org

Every Sysmos plan and price →

Strong points and limits

Strong points

  • Checks APIs across multiple regions.
  • Flows support variables and per-step assertions.
  • Linux agent captures syscall and resource data.
  • Alerts include Slack, Discord, PagerDuty, and email.
  • Free plan includes 10 monitors and five flows.

Limits

  • Free plan is limited to one region.
  • Free plan has a 60-second minimum interval.
  • Free plan retains logs for seven days.
  • Team costs $29 a month.

Who it suits

Sysmos presents its Free plan for solo developers and personal projects, and describes the service as designed for small teams. Teams that need more monitors, flows, regions, or retention can compare the listed Team and Business limits.

Verdict

Sysmos combines API checks, multi-step flows, Linux telemetry, and team alert routing. Its plans specify monitor, flow, interval, and retention limits, with Team at $29 a month and Business at $99 a month.

Where Specifiction places it

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