GET/v1/ontology/fields/{field_name}Tier · Free

Get Field

Full definition for a single field by its API name.

Useful when you receive an unfamiliar field in a response and want to know what it represents, how it maps across accounting standards, and whether nulls are expected for some filers.

Path parameters · 1

Variables interpolated into the URL path.

field_namestringrequired

Request headers · 1

Authentication.

Authorizationstringrequired

Production API key. Pass it as Bearer ax_live_…

Returns · 200

The standard { data, meta } envelope.

Envelope

dataobject

A single result object.

metaMeta

Pagination and request metadata, including request_id, data_as_of, and ontology_version.

ontology_version 2.1.0replay meta.as_of · ?as_of=<token>

Errors

Standard HTTP status codes plus a typed error.code in the { error: { code, message } } envelope.

Every endpoint returns the same typed error envelope ({ error: { code, message } }). For the full list of codes, see the Errors reference.