Databento Metadata API
Discovery and cost-estimation endpoints for the historical catalog. List publishers, datasets, schemas, and fields; look up per-dataset date ranges and data-quality conditions; and pre-compute the record count, billable size, and dollar cost of a query before you run it. Essential for planning research and controlling spend on financial and reference data.
Databento Metadata API is one of 24 APIs that Databento publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Metadata, Reference Data, Market Data, Datasets, and Financial Data. The published artifact set on APIs.io includes API documentation, an API reference, and an OpenAPI specification.
This API exposes 23 operations across 20 paths, and defines 6 schemas. It is described by OpenAPI 3.2.0, at version 1.0.
Requests are made against a single base URL, https://hist.databento.com/v0.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 3
Databento Metadata API declares
3 security schemes
for authenticating requests.
It accepts HTTP basic authentication (apiKeyBasicAuth).
It supports OAuth 2.0 (OAuth2PasswordBearerWithCookie) using the password flow.
It accepts HTTP basic authentication (HTTPBasic).
apiKeyBasicAuth— HTTP Basic authentication. Supply your Databento API key (prefixed with db-) as the username and leave the password empty.
Paths & Operations 23
Across 20 paths, the API surfaces 23 operations — 20 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.
Catalog discovery, dataset ranges and conditions, and cost estimation.
Schemas 6
The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are Body_post_get_cost_v0_metadata_get_cost_post (9 properties), Body_post_get_record_count_v0_metadata_get_record_count_post (8 properties), Body_post_get_billable_size_v0_metadata_get_billable_size_post (8 properties), ValidationError (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
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Other APIs Databento publishes across the network.
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