Clear Street Calendar API
Access clocks and financial calendars for market sessions and events.
Clear Street Calendar API is one of 23 APIs that Clear Street publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Calendar. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, and a changelog.
This API exposes 2 operations across 2 paths, and defines 13 schemas. It is described by OpenAPI 3.2.0, at version 2025-10-31.
Requests are made against 3 base URLs: https://api.clearstreet.com, https://api-dev.clearstreet.com, http://localhost:5001.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Clear Street Calendar API declares
1 security scheme
for authenticating requests.
It accepts HTTP bearer tokens (JWT) (BearerAuth).
By default, every request must be authenticated.
Paths & Operations 2
Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.
Access clocks and financial calendars for market sessions and events.
Schemas 13
The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are MarketHoursDetail (8 properties), ResponseMetadata (6 properties), SessionSchedule (4 properties), TradingSessions (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Clear Street 12
Other APIs Clear Street publishes across the network.
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