# 30 min meeting Individual with Sylvester Renner

> For one specific decision, question, or piece of friction, you need to think through clearly — not your whole organization, just the one thing in front of you right now. This works well for: a governance question you can't get a straight answer on, a quick gut-check before a major decision, a fit conversation about a partnership or speaking engagement, or framing a problem you haven't fully named yet. Grounded in 20 years building Develop Africa from a $23,918 startup budget to $3.3M in IRS-verified deployment — real institutional experience applied to your specific situation, not generic advice. A brief form is sent after booking so we can start directly on the issue rather than spending the first 10 minutes on context. If your situation involves multiple interconnected decisions or a longer-term challenge, the 60-minute session will serve you better. Confidential.

- Host: Sylvester Renner
- Duration: 30 min
- Location: Cal Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Payment: required, and collected on the booking page.
- Booking page: https://cal.com/sylrenner/30min
- Event type id: 6140893

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6140893&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

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 6140893,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "title": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (What is this meeting about?)
- Optional fields: `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.