Observability, rebuilt for Agents.
A full-fidelity observability data lake built for machine-scale investigation, running entirely in your own cloud.
Both SaaS and in-your-cloud deployments supported.
Founded by ex-Netflix engineers
Backed by CRV
Humans needed dashboards. Agents need telemetry.
Your agents do the investigating. Why should a vendor store your telemetry?
Turn your cloud into an observability backend.
Install the plugin from Claude, Cursor, Codex, or Gemini. Store your telemetry in your own object storage. Cardinal turns it into an observability backend for AI agents and engineers.
cardinal — claude codeLet your agents investigate without compromise.
Traditional observability platforms sample your traces, cap cardinality, age out logs, and throttle queries. These limits keep the vendor’s costs down at human query volumes. Agents investigate at machine scale and hit every one. Cardinal has none of them. Your agents can keep going until the evidence, not the platform, becomes the limit.
- Queries completed
- 3
- Dimensions explored
- 2
- History compared
- 14d cap
- Rate-limited
- 1
- Elapsed
- 00:19
Cardinal- Queries completed
- 3,442
- Dimensions explored
- 36
- History compared
- 3 months
- Rate-limited
- 0
- Elapsed
- 00:04
Your telemetry is infinite. Your context window isn’t.
Every production question is a needle-in-a-haystack problem: billions of events, one answer. No LLM can hold the haystack.
Cardinal semantically compresses it. Your agent reasons over the shape of production and pulls raw evidence only where the needle is.
184 GB. 42 log lines. Same answer.
compression
Compile agentic investigations into mechanical runbooks.
Every agent investigation captures hard-earned operational knowledge. Cardinal compiles successful agent investigations into lightweight runbooks that watch your infrastructure forever — or become building blocks for every future agent.
Discovery is expensive. Execution shouldn't be. Once a runbook is compiled, every subsequent run costs a fraction of the original — predictable, bounded, no runaway loops.
Every answered question becomes reusable software. Future agents inherit every investigation your team has already run.
Transparent pricing. No sales call required.
Same product either way. Pick where Cardinal runs, see the price on the page.
Start free.
10 GB/day, forever. Every feature. No credit card.
Your bill stays predictable.
The bill is the same whether you run one query or a million. Retention and cardinality don't move it either.
Your cloud or ours.
Choose the deployment model, not a different product.
Buy expertise, not more telemetry.
Higher tiers add faster response, architecture guidance, and enterprise support.
- Free: Start free. — 10 GB/day, forever. Every feature. No credit card.
- Fixed price: Your bill stays predictable. — The bill is the same whether you run one query or a million. Retention and cardinality don't move it either.
- Deployment: Your cloud or ours. — Choose the deployment model, not a different product.
- Support: Buy expertise, not more telemetry. — Higher tiers add faster response, architecture guidance, and enterprise support.
Give your agents the evidence they deserve.
Stop building agents on infrastructure designed for dashboards. Give them complete evidence, machine-scale investigations and infrastructure you control.
Independently audited annually. Your data never leaves your cloud.