booking.addons

List the paid extras sold alongside a booking, with their prices

Read-onlyRead budget

REST

Shipping

POST /api/v1/booking/addons

MCP tool

Live

booking.addons

Exposed on: REST API · Shop MCP server · Claude connector · Dash (in-app copilot) · Zapier. Part of the Booking domain.

Operating contract

The upsell shelf: every extra the shop sells alongside its services — an interior clean, a headlight restoration, a second key coded — with what it costs and how many extra minutes in the bay it takes.

THIS CANNOT CURRENTLY BE BOOKED THROUGH THE REGISTRY. booking.book submits addons: [], so an extra named here is one a machine can QUOTE and cannot ADD. Say the price if asked; do not promise it is on the appointment, and let the shop add it. That is also why this capability is deliberately absent from the public booking server: an agent that offers an extra it cannot book is worse than one that never mentions extras.

AN ADD-ON IS NOT A SERVICE and does not appear in booking.services. A customer cannot book one on its own; it rides on top of a service.

EVERY EXTRA LENGTHENS THE VISIT. duration_minutes is time added to the appointment, not a separate slot.

price is the flat price; tiers carries the per-vehicle price when the extra is priced by size, and it wins where it has an entry. This is what the storefront publishes: no cost, no margin.

AN EXTRA THE SHOP TOOK OFFLINE IS NOT HERE, and neither is a free one or one priced by the hour — a free extra that lengthens the bay is free labour, and an hourly rate is not a price a booking page can sell. Same gate as the storefront's, so the two lists always agree.

Every sellable extra is returned, so nothing is truncated.

Who may call it

Permission: NoneThe extras shelf on the public storefront at /book/<slug>, which a visitor ticks before they confirm with no login involved. The prices are already published there.
Plan: Every planNo plan gate. Available on every Service VIN plan.
Retries: naturalNaturally idempotent — running it twice leaves the same world as running it once. A retrying integration needs no key.
Rate class: readCounted against the read budget — the widest of the four.

Input

This capability takes no arguments.

Output

Field	Type	Description
items	object[]	—
items[].id	string	—
items[].name	string	—
items[].description	string \| null	—
items[].price	number	—
items[].tiers	object	—
items[].duration_minutes	number	—
items[].discount_label	string \| null	—
currency	string	—
bookable_through_registry	boolean	—
total	number	—

Examples

Built from this capability's own schema — required fields and the ones carrying a default, and nothing invented. Paste one and it validates.

curl

export SERVICEVIN_API_KEY=svk_live_…

curl -X POST https://www.servicevin.com/api/v1/booking/addons \
  -H "Authorization: Bearer $SERVICEVIN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

TypeScript (fetch)

const res = await fetch("https://www.servicevin.com/api/v1/booking/addons", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.SERVICEVIN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({}),
});

// Success and failure are both envelopes. Switch on error.code, never
// on error.message — the codes are stable, the messages are for people.
const payload = await res.json();
if (!res.ok) throw new Error(payload.error.code);
const data = payload.data;

Python (requests)

import os, requests

res = requests.post(
    "https://www.servicevin.com/api/v1/booking/addons",
    headers={"Authorization": f"Bearer {os.environ['SERVICEVIN_API_KEY']}"},
    json={},
    timeout=30,
)
payload = res.json()
if not res.ok:
    raise RuntimeError(payload["error"]["code"])
data = payload["data"]

MCP tools/call — https://www.servicevin.com/api/mcp

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "booking.addons",
    "arguments": {}
  }
}

Refusals

The four gates run in this order on every surface, and the order is not arbitrary — see Authentication.

Status	Code	When
404	`not_found`	The id is unknown, or the feature is not enabled for this account. Deliberately the same answer for both.
422	`validation_error`	An argument was wrong. The message names the field.
429	`rate_limited`	Too many read calls. Back off and retry.
500	`internal_error`	Something failed on our side. Nothing was changed.

Operating contract#

Who may call it#

Input#

Output#

Examples#