# Parth Tiwari – Cal.com booking page

> Full-stack & AI engineer. I design and ship production AI products end to end: LLM apps, RAG, diffusion and audio pipelines, and the systems underneath. Pick a slot below and tell me what you're building.

Booking page: https://cal.com/parth-tiwari

## Event types

- [Intro call](https://cal.com/parth-tiwari/15min): 15 min, confirmed instantly, event type id 6654338. A quick call to see if we're a fit. Tell me what you're building and where you're stuck, and I'll tell you honestly whether and how I can help. Video by default; ask for a phone call if you prefer. Details: https://cal.com/parth-tiwari/15min.md
- [Project scoping call](https://cal.com/parth-tiwari/30min): 30 min, confirmed instantly, event type id 6654339. For a specific project you want built or fixed. We'll go through what you need, a rough architecture, timeline and cost, and whether I'm the right person for it. Bring context: a spec, docs, designs, or a repo. Details: https://cal.com/parth-tiwari/30min.md
- [Technical deep-dive](https://cal.com/parth-tiwari/technical-deep-dive): 45 min, confirmed instantly, event type id 6856099. A paid working session on one hard problem: AI pipeline or RAG design, evals and guardrails, GPU cost and latency, or an architecture and code review. Send the details ahead of time so we can go straight into it. Best once we've had an intro call. Details: https://cal.com/parth-tiwari/technical-deep-dive.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