CARDO connects your product to the CIRQL identity network — delivering verified phone numbers, email addresses, and mailing addresses in real time, with explicit user consent baked in.
Trusted by teams who can't afford to work with bad data.
Why CARDO
CARDO is the enterprise API layer for CIRQL, the federated identity network where people manage and share their own contact information. When a CIRQL user's details change, every system with permission — including yours — receives the update automatically. No re-verification. No manual refresh. No stale records.
When a user updates their phone, address, or email in CIRQL, the change propagates to your systems instantly. Your database stays accurate without a single re-verification call.
Every data point in CARDO is explicitly granted by the end user. You receive only what they've approved — and access revokes automatically when they remove it. Compliance isn't an add-on; it's the architecture.
CARDO's REST and webhook APIs are built for production workloads. Real-time push events mean no polling. SLA-backed uptime means your pipeline never waits on identity.
CIRQL is a federated network — no single company owns the identity graph. CARDO gives you access without creating a new point of failure or a new privacy liability.
How CARDO works
CARDO is designed for fast integration. Your engineering team can be in production the same day.
Authenticate with your CARDO API key and specify which identity fields your product needs.
End users approve your app's data request directly in CIRQL. You receive only what's been explicitly permitted.
CARDO pushes change events to your webhook endpoint the moment a user updates their info — no polling, no lag.
Developer-first API
CARDO exposes a clean REST API with JSON throughout. Full SDK support for Node, Python, and Go. Webhooks use signed payloads so you can verify every event without additional infrastructure.
Our developer docs cover auth, endpoints, webhook signatures, pagination, rate limits, and error handling.
Built for the enterprise
CARDO was designed from the ground up for teams where data accuracy and regulatory compliance aren't optional.
Consent is explicit, auditable, and user-controlled. You never hold data the user hasn't actively shared.
Access controls, audit logs, and encryption in transit and at rest.
Scope credentials to read-only, webhook, or admin functions across teams.
Signed payloads, retry logic, and delivery receipts so your systems never miss a change event.
TLS on all endpoints. Data encrypted at rest. No central data warehouse.
Every request logged with who accessed what, when, and under which consent reference.
See how CARDO integrates with your stack in under 30 minutes. Our team will walk you through the API, data model, and compliance controls.
No commitment. We'll respond within one business day. By submitting you agree to our privacy policy. We don't sell data. That's the whole point.