Zimun Zimun: Appointment Scheduling & Booking Service

Zimun: Appointment Scheduling & Booking Service: Booking API Usage Examples

API

These examples show full flows in Python, Node.js, Go, and Rust. Copy them, swap in your IDs, and you have a working integration.

1) Get an access token

Use OAuth2 Client Credentials to request a short‑lived token before calling any API.

Python 
import os
import requests

token_resp = requests.post(
    "https://api.zimun.online/oauth/token",
    auth=(os.getenv("ZIMUN_CLIENT_ID"), os.getenv("ZIMUN_CLIENT_SECRET")),
    data={"grant_type": "client_credentials"},
)
token = token_resp.json()["access_token"]
headers = {"Authorization": f"Bearer {token}"}
Node.js 
import axios from "axios";

const tokenResp = await axios.post(
  "https://api.zimun.online/oauth/token",
  new URLSearchParams({ grant_type: "client_credentials" }),
  {
    auth: {
      username: process.env.ZIMUN_CLIENT_ID,
      password: process.env.ZIMUN_CLIENT_SECRET,
    },
  }
);
const token = tokenResp.data.access_token;
const headers = { Authorization: `Bearer ${token}` };
Go 
client := &http.Client{}
req, _ := http.NewRequest("POST", "https://api.zimun.online/oauth/token", strings.NewReader("grant_type=client_credentials"))
req.SetBasicAuth(os.Getenv("ZIMUN_CLIENT_ID"), os.Getenv("ZIMUN_CLIENT_SECRET"))
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, _ := client.Do(req)
defer resp.Body.Close()
Rust 
let client = reqwest::Client::new();
let resp = client
  .post("https://api.zimun.online/oauth/token")
  .basic_auth(std::env::var("ZIMUN_CLIENT_ID")?, Some(std::env::var("ZIMUN_CLIENT_SECRET")?))
  .form(&[("grant_type", "client_credentials")])
  .send()
  .await?;
let json: serde_json::Value = resp.json().await?;
let token = json["access_token"].as_str().unwrap();

2) List services

Fetch organization services first, then use a selected service_id in availability and booking calls.

Python 
services = requests.get(
    "https://api.zimun.online/api/v1/services?page_size=50",
    headers=headers,
).json()

first_service_id = services["items"][0]["id"] if services.get("items") else None
Node.js 
const services = await axios.get(
  "https://api.zimun.online/api/v1/services?page_size=50",
  { headers }
);

const firstServiceId = services.data.items?.[0]?.id || null;
Go 
servicesReq, _ := http.NewRequest("GET", "https://api.zimun.online/api/v1/services?page_size=50", nil)
servicesReq.Header.Set("Authorization", "Bearer "+token)
servicesResp, _ := client.Do(servicesReq)
defer servicesResp.Body.Close()
Rust 
let services = client
  .get("https://api.zimun.online/api/v1/services?page_size=50")
  .bearer_auth(token)
  .send()
  .await?;

let body: serde_json::Value = services.json().await?;

3) Get availability

Read open slots for a selected service on a specific date.

Python 
single_day = requests.get(
    "https://api.zimun.online/api/v1/availability?service_id=s_123&date=2026-02-20",
    headers=headers,
).json()
Node.js 
const singleDay = await axios.get(
  "https://api.zimun.online/api/v1/availability?service_id=s_123&date=2026-02-20",
  { headers }
);
Go 
availReq, _ := http.NewRequest("GET", "https://api.zimun.online/api/v1/availability?service_id=s_123&date=2026-02-20", nil)
availReq.Header.Set("Authorization", "Bearer "+token)
availResp, _ := client.Do(availReq)
defer availResp.Body.Close()
Rust 
let availability = client
  .get("https://api.zimun.online/api/v1/availability?service_id=s_123&date=2026-02-20")
  .bearer_auth(token)
  .send()
  .await?;

4) Hold → Confirm

This is the booking commit flow after you already selected a valid service and time.

Python 
# create hold
hold = requests.post(
    "https://api.zimun.online/api/v1/appointments/hold",
    headers=headers,
    json={
        "service_id": "s_123",
        "appointment_time": "2025-12-01T10:00:00Z",
    },
).json()

# 3) confirm
confirm = requests.post(
    "https://api.zimun.online/api/v1/appointments/confirm",
    headers=headers,
    json={
        "hold_id": hold["hold_id"],
        "contact_name": "Dana Lee",
        "contact_email": "dana@example.com",
    },
).json()
Node.js 
const hold = await axios.post(
  "https://api.zimun.online/api/v1/appointments/hold",
  {
    service_id: "s_123",
    appointment_time: "2025-12-01T10:00:00Z",
  },
  { headers }
);

const confirm = await axios.post(
  "https://api.zimun.online/api/v1/appointments/confirm",
  {
    hold_id: hold.data.hold_id,
    contact_name: "Dana Lee",
    contact_email: "dana@example.com",
  },
  { headers }
);
Go 
// hold
holdBody := `{"service_id":"s_123","appointment_time":"2025-12-01T10:00:00Z"}`
holdReq, _ := http.NewRequest("POST", "https://api.zimun.online/api/v1/appointments/hold", strings.NewReader(holdBody))
holdReq.Header.Set("Authorization", "Bearer "+token)
holdReq.Header.Set("Content-Type", "application/json")
holdResp, _ := client.Do(holdReq)
Rust 
let hold = client
  .post("https://api.zimun.online/api/v1/appointments/hold")
  .bearer_auth(token)
  .json(&serde_json::json!({
      "service_id": "s_123",
      "appointment_time": "2025-12-01T10:00:00Z"
  }))
  .send()
  .await?;

5) Reschedule or cancel an appointment

Use /api/v1 endpoints with your bearer token to update an existing appointment by appointment_id.

Python 
rescheduled = requests.post(
    "https://api.zimun.online/api/v1/appointments/reschedule",
    headers=headers,
    json={
        "appointment_id": "a_123",
        "start_time": "2026-02-20T13:00:00Z",
    },
).json()

cancelled = requests.post(
    "https://api.zimun.online/api/v1/appointments/cancel",
    headers=headers,
    json={"appointment_id": "a_123"},
).json()
Node.js 
const rescheduled = await axios.post(
  "https://api.zimun.online/api/v1/appointments/reschedule",
  { appointment_id: "a_123", start_time: "2026-02-20T13:00:00Z" },
  { headers }
);

const cancelled = await axios.post(
  "https://api.zimun.online/api/v1/appointments/cancel",
  { appointment_id: "a_123" },
  { headers }
);
Go 
rescheduleBody := `{"appointment_id":"a_123","start_time":"2026-02-20T13:00:00Z"}`
rescheduleReq, _ := http.NewRequest("POST", "https://api.zimun.online/api/v1/appointments/reschedule", strings.NewReader(rescheduleBody))
rescheduleReq.Header.Set("Authorization", "Bearer "+token)
rescheduleReq.Header.Set("Content-Type", "application/json")
rescheduleResp, _ := client.Do(rescheduleReq)
defer rescheduleResp.Body.Close()

cancelBody := `{"appointment_id":"a_123"}`
cancelReq, _ := http.NewRequest("POST", "https://api.zimun.online/api/v1/appointments/cancel", strings.NewReader(cancelBody))
cancelReq.Header.Set("Authorization", "Bearer "+token)
cancelReq.Header.Set("Content-Type", "application/json")
cancelResp, _ := client.Do(cancelReq)
defer cancelResp.Body.Close()
Rust 
let rescheduled = client
  .post("https://api.zimun.online/api/v1/appointments/reschedule")
  .bearer_auth(token)
  .json(&serde_json::json!({
    "appointment_id": "a_123",
    "start_time": "2026-02-20T13:00:00Z"
  }))
  .send()
  .await?;

let cancelled = client
  .post("https://api.zimun.online/api/v1/appointments/cancel")
  .bearer_auth(token)
  .json(&serde_json::json!({ "appointment_id": "a_123" }))
  .send()
  .await?;