| What it does | One API for every wearable. Read and write.
| API for sending handwritten letters through AI agents and assistants
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| Stage | Not given
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| Founded | Not given
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| Based in | CH
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| Pricing model | Free trial
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| Pricing | Hacker: $32.50/month billed annually ($390/year) or $39/month month to month, up to 100 connected users. Startup: $82.50/month billed annually ($990/year) or $99/month month to month, up to 500 connected users. Scale: $207.50/month billed annually ($2,490/year) or $249/month month to month, 1,500 co
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| Key features | - Support for 10 wearable providers: Garmin, COROS, Polar, Wahoo, Zepp, Hammerhead, Fitbit, Suunto, WHOOP and Apple Watch
- Read activity data including sport, start time, device and activity id
- Access to FIT files with laps and timestamped samples including heart rate, power, speed and GPS
- Wellness data including sleep stages, HRV, resting heart rate and VO2max from Garmin and COROS
- Push structured workouts with warmups, repeats and intervals to Garmin, Wahoo or COROS
- Cryptographic signing with Ed25519 keys that never leave the developer's machine
- Encrypted webhook deliveries and signed requests with no API key storage
- Hosted consent screen for user device connection
- Webhook retry and resend management with detailed logging
- Activity backfill API to retrieve all previously granted workout data
| - Agent policy configuration with send limits and approval settings
- Relationship management with contact details restricted from API
- Moment tracking for birthdays and anniversaries
- Letter quote and pricing with customizable upgrades
- Real-time send tracking with multiple status states
- Address request generation with privacy protection
- Webhook event system with signature verification
- OAuth support for custom connectors like Claude
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| What makes it different | - Single integration replaces 20+ individual wearable provider integrations
- No API keys to store or manage, using cryptographic signing instead
- Hosted user consent flow eliminates OAuth callback handling
- All providers and endpoints included on every plan with no per-call pricing
- Normalized data format across providers for consistent handling
| - Same API primitives used in the app itself
- Hands-on compliance with frequency limits and approval workflows
- Model Context Protocol integration for AI assistants
- Hosted MCP server with no installation required
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 20 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 30 | 0 |
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| Referring domains (Majestic) | 35 | 0 |
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Stridee Platform
Maison Cartouche