tZERO Markets API
Market schedule information including pre-market, regular, and post-market hours.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Issuance & Secondary Markets API
description: APIs to Create Individual broker dealer accounts, Trigger KYC on the investors in the account, Review account information and KYC results, View Primary offering that are available to invest and manage investments in the assets.
servers:
- url: https://gateway-web-api.tzero.com/app
tags:
- name: Markets
description: Market schedule information including pre-market, regular, and post-market hours.
paths:
/markets/v1/schedules:
get:
tags:
- Markets
summary: Get market schedules
description: 'Returns pre-market, market, and post-market hours for the tZERO broker.
The `type` query parameter selects which schedule variant is returned:
- `TRADING` — hours during which trades can be executed.
- `ORDERS` — hours during which orders can be submitted.'
operationId: getMarketSchedules
security:
- x-api-key: []
parameters:
- name: type
in: query
required: true
description: Schedule variant to return.
schema:
type: string
enum:
- TRADING
- ORDERS
default: TRADING
- name: start
in: query
required: false
description: 'Date in `yyyy-MM-dd` or ISO-8601 format before which schedules should not be returned. If not provided a default is used.
'
schema:
type: string
example: '2026-04-13'
- name: stop
in: query
required: false
description: 'Date in `yyyy-MM-dd` or ISO-8601 format after which schedules should not be returned. If not provided a default is used.
'
schema:
type: string
example: '2026-04-20'
- name: zoneid
in: query
required: false
description: 'ISO-8601 zone ID in which returned hours should be messaged (e.g. `America/New_York`, `America/Los_Angeles`, `Europe/Paris`). If not provided a default is used.
'
schema:
type: string
example: America/New_York
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/ScheduleResponse'
examples:
success:
summary: Example response
value:
dto:
- date: '2026-04-13'
zoneId: America/New_York
description: Regular trading day
preMarketHours:
open: '2026-04-13T07:00:00-04:00'
close: '2026-04-13T09:30:00-04:00'
marketHours:
open: '2026-04-13T09:30:00-04:00'
close: '2026-04-13T16:00:00-04:00'
postMarketHours:
open: '2026-04-13T16:00:00-04:00'
close: '2026-04-13T20:00:00-04:00'
errors: null
'400':
description: 'Bad Request — `type` query parameter is missing or not one of the supported values (`SCHEDULE_TYPE_INVALID`).
'
content:
application/json:
schema:
$ref: '#/components/schemas/ScheduleResponse'
examples:
invalidType:
summary: Invalid schedule type
value:
dto: null
errors:
- code: SCHEDULE_TYPE_INVALID
message: 'Unsupported schedule type ''FOO''. Expected one of: TRADING, ORDERS.'
'500':
description: Internal Server Error
/markets/v1/mdt/public-pricehistory/{symbol}:
get:
tags:
- Markets
summary: Get Price History for a Symbol
description: Returns pricehistory for the requested Symbol
security:
- x-api-key: []
bearerAuth: []
parameters:
- name: symbol
in: path
required: true
description: Symbol that will be used to retrieve the price history"
schema:
type: string
example: TZROP
responses:
'200':
description: OK
content:
application/json:
schema:
type: object
properties:
priceHistories:
type: array
items:
$ref: '#/components/schemas/PriceHistory'
operationId: getMarketsV1MdtPublicPricehistoryBySymbol
x-operation-id-source: derived
/markets/v1/mdt/public-snapshots/{symbol}:
get:
tags:
- Markets
summary: Get marketdata snapshot for a symbol
description: Returns Market snapshot for a requested symbol in the path
security:
- x-api-key: []
bearerAuth: []
parameters:
- name: symbol
in: path
required: true
description: Symbol that will be used to retrieve the market snapshot"
schema:
type: string
example: TZROP
responses:
'200':
description: OK
content:
application/json:
schema:
$ref: '#/components/schemas/SymbolData'
examples:
TZROP:
summary: TZROP Snapshot
value:
symbol: TZROP
high: 1
low: 1
open: 1
volume: 30
lastPrice: 1
lastQuantity: 10
prevClosePx: 3.5
bidPrice: 3.92
bidPriceRate: null
bidQuantity: 5000
bidQtyBookTotal: 5167
askPrice: 3.52
askPriceRate: null
askQuantity: 75
askQtyBookTotal: 3105
timestamp: '2026-01-30T14:11:47.969023549-05:00'
operationId: getMarketsV1MdtPublicSnapshotsBySymbol
x-operation-id-source: derived
components:
schemas:
SymbolData:
type: object
description: Represents market data for a symbol.
properties:
symbol:
type: string
high:
type: number
low:
type: number
open:
type: number
volume:
type: integer
lastPrice:
type: number
lastQuantity:
type: number
prevClosePx:
type: number
bidPrice:
type: number
bidPriceRate:
type: number
bidQuantity:
type: number
bidQtyBookTotal:
type: number
askPrice:
type: number
askPriceRate:
type: number
askQuantity:
type: number
askQtyBookTotal:
type: number
timestamp:
type: string
SubSchedule:
type: object
description: A portion of a single day defining open and close times for a trading session.
required:
- open
- close
properties:
open:
type: string
format: date-time
description: ISO-8601 date and time when orders are first accepted and trades can be made (inclusive).
close:
type: string
format: date-time
description: ISO-8601 date and time after which orders are no longer accepted and trades will not be made (exclusive).
ScheduleResponse:
type: object
description: Wrapper response for market schedule queries. Contains either a list of schedules in `dto` or a list of `errors`.
properties:
dto:
type:
- array
- 'null'
items:
$ref: '#/components/schemas/MarketSchedule'
errors:
type:
- array
- 'null'
items:
$ref: '#/components/schemas/ScheduleError'
MarketSchedule:
type: object
description: Pre-market, market, and post-market hours for a single trading day.
required:
- date
- zoneId
properties:
date:
type: string
format: date
description: Date in `yyyy-MM-dd` format that the trading hours apply to.
zoneId:
type: string
description: ISO-8601 zone ID that all open and close times are messaged in (e.g. `America/New_York`).
description:
type:
- string
- 'null'
description: Optional text roughly describing the date as a whole. Format may change without notice.
preMarketHours:
allOf:
- $ref: '#/components/schemas/SubSchedule'
description: Trading activity schedule that occurs before regular market hours. Null if pre-market trading is not available this day.
marketHours:
allOf:
- $ref: '#/components/schemas/SubSchedule'
description: Regular business day trading hours. Null if not allowed this day.
postMarketHours:
allOf:
- $ref: '#/components/schemas/SubSchedule'
description: Trading activity schedule that occurs after regular market hours. Null if post-market trading is not available this day.
ScheduleError:
type: object
description: Error item returned by the schedule endpoints.
properties:
code:
type: string
description: Error code (e.g. `SCHEDULE_TYPE_INVALID`).
message:
type: string
description: Human-readable error message.
PriceHistory:
type: object
description: Represents Price History data for a symbol.
properties:
symbol:
type: string
date:
type: string
open:
type: number
high:
type: number
low:
type: number
close:
type: number
volume:
type: integer
securitySchemes:
x-api-key:
type: apiKey
in: header
name: x-apikey
bearerAuth:
type: http
scheme: bearer
bearerFormat: JWT
refreshToken:
type: refreshToken
in: header
name: refreshToken