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ClickStack
What it is
ClickStack is an open-source observability stack for OpenTelemetry that brings logs, metrics, traces, session replays, and errors into one system. Its HyperDX interface provides Lucene-style search, SQL access, dashboards, alerts, event deltas, and event patterns. ClickStack uses ClickHouse storage for high-cardinality telemetry, with the site describing sub-second queries even on petabytes of data. Native OpenTelemetry support includes a bundled collector, while non-OTel wide event data can be used when a timestamp is present. Deployment can be self-hosted, hybrid, or cloud-based. Managed ClickStack runs on ClickHouse Cloud with managed operations, scaling, upgrades, backups, reliability, authentication, and user management. The managed service advertises indefinite retention for high-cardinality telemetry and storage pricing below one cent per GB. The ClickStack MCP server connects workflows with tools such as Claude Code, Codex, Cursor, Slack, Linear, Jira, runbooks, and custom agents. Open-source components use Apache 2.0 or MIT licenses.
For and against
For
- Unified logs, metrics, traces, and errors
- Native OpenTelemetry collector
- Lucene search and SQL access
- Self-hosted, hybrid, or cloud deployment
- Managed operations on ClickHouse Cloud
Against
- Managed features depend on ClickHouse Cloud
- High-cardinality retention and pricing apply to managed service
- Requires timestamp for non-OTel wide events
The verdict
ClickStack combines broad observability signals with search, dashboards, and flexible deployment. Choose between open-source deployment and managed operations based on how much infrastructure your team wants to run.
Who it suits
It suits teams collecting OpenTelemetry data across logs, metrics, traces, and related signals. Self-hosted, hybrid, cloud, and managed choices support different deployment preferences.
Plans and prices
ClickStack Open Source
Self-hosted; run ClickHouse, HyperDX UI and OpenTelemetry Collector yourself
Read 15 Oct 2026 · github.com
Basic
Up to 1 TB storage · 8–12 GiB memory · daily backups retained 1 day · 1 availability zone
Read 15 Oct 2026 · clickhouse.com
Scale
Unlimited storage · configurable memory · compute-compute separation · daily backups retained 1 day
Read 15 Oct 2026 · clickhouse.com
Enterprise
SAML SSO · private regions · manual scaling · 30-minute Sev1 response
Read 15 Oct 2026 · clickhouse.com
Managed ClickStack trial
Trial ends when credits are used or 30 days pass, whichever comes first
Read 12 Oct 2026 · clickhouse.com
On the record
- Agent integrations
- The ClickStack MCP server can connect observability workflows to Claude Code, Codex, Cursor, Slack, Linear, Jira, runbooks, internal platforms, or custom agents.clickhouse.com · read 12 Oct 2026
- API
- ClickStack has REST APIs for Managed and OSS deployments; managed APIs support dashboard and alert CRUD, while OSS adds chart time-series and webhook endpoints.clickhouse.com · read 15 Oct 2026
- Cloud API extensibility
- Managed ClickStack resources are exposed through ClickHouse Cloud OpenAPI with downloadable schemas suitable for SDK generation and Postman.clickhouse.com · read 15 Oct 2026
- Cloud preview status
- ClickStack Cloud is in private preview and its pricing had not been finalized on the announcement page.clickhouse.com · read 15 Oct 2026
- Collection
- ClickStack natively supports OpenTelemetry and includes a bundled OpenTelemetry Collector.clickhouse.com · read 12 Oct 2026
- Company legal name
- Crunchbase identifies the maker as ClickHouse, Inc., a privately held for-profit company headquartered in Palo Alto, California.crunchbase.com · read 15 Oct 2026
- Company profile
- LinkedIn lists ClickHouse as founded in 2021 with 501–1,000 employees and headquarters in Palo Alto, California.linkedin.com · read 15 Oct 2026
- Custom schemas
- ClickStack can use non-OTel wide event data when it includes a timestamp field.clickhouse.com · read 12 Oct 2026
- Dashboards and alerts
- ClickStack includes dashboards, alerts, event-delta analysis, event-pattern detection and service maps.clickhouse.com · read 15 Oct 2026
- Deployment options
- bothclickhouse.com · read 24 Sep 2026
- Deployment choices
- The repository documents all-in-one Docker, Docker Compose, Helm and ClickHouse Cloud deployment, with independently scalable components.github.com · read 15 Oct 2026
- Documentation depth
- The documentation navigation covers architecture, deployment, ingestion, configuration, TTLs, search, dashboards, SQL visualization, alerts, service maps, session replay, RBAC, API reference and an MCP server.clickhouse.com · read 15 Oct 2026
- Embedded edition limitation
- The ClickStack UI embedded in ClickHouse 26.2 is for local exploration and omits persistent state, alerting, dashboard persistence and event-pattern functionality.clickhouse.com · read 15 Oct 2026
- Funding news
- ClickHouse announced a $350 million Series C financing round on May 29, 2025.clickhouse.com · read 15 Oct 2026
- HyperDX acquisition
- ClickHouse announced its acquisition of HyperDX on March 13, 2025 and said the open-source project and self-hosting support would continue.clickhouse.com · read 15 Oct 2026
- Independent assessment
- Thoughtworks Technology Radar places ClickStack in its “Worth exploring” ring and describes it as an OpenTelemetry-compatible open-source platform for unified observability.thoughtworks.com · read 15 Oct 2026
- Instrumentation and sources
- The product page lists Node.js, Go, Java, JavaScript, Next.js, Python, Ruby, Cloudflare, Kubernetes, OpenTelemetry, AWS, and Fluentd among its instrumentation or data source options.clickhouse.com · read 12 Oct 2026
- Integrations
- Documented partners include Bindplane, bitdrift, Odigos and Telflo for collector management, mobile telemetry, eBPF tracing and routing control.clickhouse.com · read 15 Oct 2026
