# David Gross – Cal.com booking page

> I am an extroverted mathematician, faculty spouse, elementary school parent, and cat dad. For 15 years after studying Math and Literature at Harvey Mudd College, I developed and operated renewable energy simulation tools as a technical leader and trusted communicator at eSolar and Heliogen. My consultancy, 1728 Solutions, addresses interpersonal challenges head-on and removes organizational friction to improve team effectiveness and health.

Booking page: https://cal.com/1728david

## Event types

- [🔎 Free Discovery Call](https://cal.com/1728david/discovery): 45 min, confirmed instantly, event type id 5414820. Let's use a 3D-5Y analysis to discover your project or decision together. Details: https://cal.com/1728david/discovery.md
- [🔧 Free Decision Tune-Up](https://cal.com/1728david/tuneup): 45 min, confirmed instantly, event type id 5203010. Let's use a 3D-5Y analysis to discover your project or decision together. Details: https://cal.com/1728david/tuneup.md
- [⛓️‍💥🌀❤️‍🩹🫂 Humanitarian Crisis Affliction Support](https://cal.com/1728david/support): 45 min, confirmed instantly, event type id 5414827. A love offering of grief acknowledgment, decision-making support, and legal/technical document review. The world continues to spin as humans create humanitarian crises across its surface. We will not be free until we are all free. To support our collective liberation, I offer free mental health and executive function assistance to those impacted by ongoing humanitarian crises. If you're comfortable, please share in your booking how you are impacted, and what help you're hoping for on this call. 🙏 Thank you for asking for help. Details: https://cal.com/1728david/support.md
- [🔥❤️‍🩹🫂 SoCal Fire Affliction Support](https://cal.com/1728david/socal-fire): 45 min, confirmed instantly, event type id 5414862. A love offering of grief acknowledgment, decision-making support, and legal/technical document review. The January 2025 SoCal Wildfires have had an enormous impact on the Angelenos & Alta/Pasadenans in my life. Growing up all along the 210, the fires deeply impacted me despite my distance. To support our community, I offer free mental health and executive function assistance to those impacted by the fires. If you're comfortable, please share in the message below how you are impacted by the fires, and what help you're hoping for on this call. 🙏 Thank you for asking for help. Details: https://cal.com/1728david/socal-fire.md

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.com/docs/api-reference/v2/introduction