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Universal calendar overlay API
Build a software layer that connects Google, Microsoft, and other calendars to provide unified overlay and conflict detection for scheduling apps. The strongest demand is for accurate availability across all connected calendars with minimal setup friction.
Pourquoi c'est important
You run scheduling across work and personal accounts, sometimes with a shared team calendar layered on top. When your scheduling tool only checks one source well, you end up double-booked or forced to maintain manual exceptions. If you are evaluating software for a team, this becomes a sales blocker because inaccurate availability creates real business loss. You do not just want another booking page; you want a reliable coordination layer that understands every connected calendar and applies conflict rules automatically, without requiring users to think about which provider owns which event.
- · Conçu pour Scheduling SaaS vendors, productivity tool builders, and operations-heavy teams that need accurate availability across multiple calendar providers..
- · Monétisation la plus probable : SaaS subscription.
La douleur · Récit
You run scheduling across work and personal accounts, sometimes with a shared team calendar layered on top. When your scheduling tool only checks one source well, you end up double-booked or forced to maintain manual exceptions. If you are evaluating software for a team, this becomes a sales blocker because inaccurate availability creates real business loss. You do not just want another booking page; you want a reliable coordination layer that understands every connected calendar and applies conflict rules automatically, without requiring users to think about which provider owns which event.
Détail du score
Signal du marché
Mise sur le marché
Founders and product managers at small scheduling or CRM tools that need enterprise-grade calendar conflict checking without building integrations from scratch.
~10K-30K relevant software teams globally
cold outbound
$99/month
10 product demos booked and 3 pilot integrations started within 30 days
Périmètre MVP · 1–2 semaines
- Implement OAuth flows for Google and Microsoft calendars
- Create a normalized event schema for free-busy and title metadata
- Build an endpoint that merges busy times from two providers
- Add per-calendar toggle settings for conflict checking
- Set up audit logging for sync errors and token refresh failures
- Add webhook or polling sync to refresh near-real-time availability
- Implement a simple API key system and developer dashboard
- Create privacy controls for hidden versus visible event fields
- Ship a sample widget showing merged availability in a booking flow
- Onboard 2 pilot users and monitor conflict-detection accuracy
Différenciation
Pourquoi cela pourrait échouer
Auto-contre-argument — le signal de confiance le plus important
- 1Calendar overlay may be seen as a commodity feature, making it hard to command standalone pricing unless sold to other software vendors.
- 2Large calendar and scheduling platforms can replicate the core workflow quickly once demand is obvious.
- 3Integration edge cases across enterprise Microsoft environments may consume support resources and delay a polished launch.
Résumé des preuves
Comment l'IA a synthétisé cet aperçu — pas de citations textuelles
Most of the discussion centers on the need to combine calendars from more than one provider and check conflicts automatically. At least one user explicitly tied the missing feature to not switching from an incumbent product, while another linked it to closing agency customers. That combination of retention and revenue impact suggests meaningful commercial demand.
Plan d'Action
Validez cette opportunité avant d'écrire du code
Prochaine Étape Recommandée
Construire
Signaux de demande forts. Vraie douleur et volonté de payer détectées — commencez à construire un MVP.
Kit de Textes pour Landing Page
Textes prêts à coller, basés sur le langage réel de la communauté Reddit
Titre Principal
Universal calendar overlay API
Sous-titre
Build a software layer that connects Google, Microsoft, and other calendars to provide unified overlay and conflict detection for scheduling apps. The strongest demand is for accurate availability across all connected calendars with minimal setup friction.
Pour Qui
Pour Scheduling SaaS vendors, productivity tool builders, and operations-heavy teams that need accurate availability across multiple calendar providers.
Liste des Fonctionnalités
✓ Unified OAuth connection flow for major calendar providers ✓ Cross-provider conflict detection and merged availability ✓ Default-on overlay rules with per-calendar toggles ✓ Developer API and webhook support
Où Valider
Partagez votre landing page sur r/GitHub · calcom/cal.com — c'est exactement là que ces points de douleur ont été découverts.
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