# Matthew Plant – Cal.com booking page

> I'm Matt — iDev.Systems is my solo practice. I apply software-engineering rigor — specification-driven development, TypeScript, SDF, CI/CD, and AI — across ERP implementation, customization, integration, and modernization. Whether the solution lives in configuration, code, or a mix, the discipline is consistent: specs first, version-controlled change, tested deploys, reviewable history. The result is ERP work that holds up under audit, scales without rework, and stays understandable as it evolves. Book a call to talk through a specific challenge.

Booking page: https://cal.com/idev-systems

## Event types

- [Ad-hoc Consultation](https://cal.com/idev-systems/ad-hoc): 15, 30, 45, 60 min, requires the host’s confirmation, event type id 5725776. Short-burst questions outside an active engagement. Details: https://cal.com/idev-systems/ad-hoc.md
- [Discovery Call - New Clients](https://cal.com/idev-systems/discovery): 45 min, requires the host’s confirmation, event type id 5725494. Introductions, problem framing and fit check. Details: https://cal.com/idev-systems/discovery.md
- [Working Session - Existing Clients](https://cal.com/idev-systems/working): 60 min, requires the host’s confirmation, event type id 5723615. Existing client deep-dives. Agenda set in advance. Details: https://cal.com/idev-systems/working.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