# Arjun Sundararajan – Cal.com booking page

> Catalyst for Founder Growth from idea to scalable startups. Connections. Introductions. Networking Events. Content. Spotlight. Events.

Booking page: https://cal.com/zeroto1

## Event types

- [Intro Call](https://cal.com/zeroto1/intro): 30 min, confirmed instantly, event type id 6764750. Quick, high-level introductory chat to learn about what you are building and see potential ecosystem connections or introduction opportunities. Details: https://cal.com/zeroto1/intro.md
- [Startup Jam Session](https://cal.com/zeroto1/jam): 30 min, confirmed instantly, event type id 6818838. Bring your ideas, questions and roadblocks and use this session as a collaborative sounding board with someone in your corner. Product, GTM, Hiring, Founder Stress - whatever is top of mind. Details: https://cal.com/zeroto1/jam.md
- [Pitch Feedback & Fundraising Chat](https://cal.com/zeroto1/fundraising): 30 min, confirmed instantly, event type id 6898645. Short talk to discuss your pitch, investor readiness, investor connections. Bring your deck and your questions. Not a formal pitch session but you're welcome to pitch, get feedback and talk through potential investor connections. Details: https://cal.com/zeroto1/fundraising.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