News: Calendar.live Integrates Contact API v2 for Real-Time Sync and Privacy Controls

Breaking: contact sync just got private and real-time.

On 2026-01-07 Calendar.live began rolling out integration with the new Contact API v2, bringing real-time contact sync, privacy-first sharing, and edge-filtering so users can control the exposure of participant metadata. This integration responds to rising demands for immediate, accurate attendee information while keeping data minimised.

What Contact API v2 changes for scheduling

Contact API v2 introduces a few important primitives that affect calendar workflows:

• Real-time sync so attendee updates propagate instantly across devices.
• Privacy controls that permit attribute-level exposure (e.g., show name but hide phone).
• Scoped access tokens enabling per-integration permissions.

Why Calendar.live adopted v2 now

We prioritised v2 because it aligns with our product values: give users control, reduce shared surface area, and improve reliability of invitations. Integrating v2 means:

• Faster RSVP reconciliation.
• Lower friction when staging public or anonymous events.
• Better audit trails for enterprise compliance.

How this affects teams and event planners

Teams will notice improvements the moment they accept invites:

1. Instant participant updates across apps and devices.
2. Granular privacy controls for hybrid and public events.
3. Reduced duplicate contact merges during heavy recruiting or event seasons.

Implementation notes for integrators

If you build on top of Calendar.live, here are critical integration guidelines:

• Limit read scopes to fields required by your workflow.
• Respect rate limits by batching lookups during bulk invites.
• Enable audit logs; compliance teams will ask for an accessible change history.

Interoperability & supporting ecosystem

As realtime contact sync becomes standard, teams must consider adjacent infrastructure and tooling. Our recommended readings and resources for teams planning migrations include:

• Official announcement and technical details: Contact API v2 release.
• Managed databases considerations for realtime workloads: Managed Databases in 2026.
• AI-driven mentor matching — a real-world use case for scoped contact data: TheMentors.store AI matching launch.
• Best practices for public Wi‑Fi and device hygiene when syncing contacts in public spaces: Free Wi‑Fi spots in UK cities.
• Designing for offline resilience and archival export patterns: Build a local web archive with ArchiveBox.

Case-in-point: events at scale

Large event organisers told us that attendee database drift was their top pain point. With v2, event check‑in and last-minute changes reconcile nearly instantly across devices; hosts can push a moderated contact share that reveals only necessary details to volunteers and staff.

“Real-time contact sync changed our event logistics overnight. We replaced multiple manual reconciliation steps with a single automated flow.” — Operations lead, a multi-city festival

Privacy and compliance — what we did

We baked privacy into the integration. Highlights:

• Attribute-level consent screens before any share.
• Revocable tokens for temporary staff access.
• Exportable audit history for legal and compliance teams.

How to enable v2 in your account

1. Open Settings → Integrations → Contacts.
2. Review requested scopes and toggle attribute exposure per workspace.
3. Run a dry-run sync (we provide a sandbox) and validate audit logs.

Looking forward

Contact API v2 is part of a broader move toward real-time, privacy-first coordination across apps. Expect more tooling to emerge that uses scoped contact data for ephemeral, verifiable interactions. If you are building event experiences, integrating v2 now reduces friction and future-proofs your workflows.

For teams considering operational changes, we also recommend reviewing managed database choices for realtime workloads and other adjacent systems discussed above to ensure your stack scales smoothly with the new sync patterns.