---
title: "Get a schema version"
method: GET
path: "/v1/extraction-schemas/{id}/versions/{version}"
tags: ["Documents"]
---

# Get a schema version

`GET /v1/extraction-schemas/{id}/versions/{version}`

## Request

- Base URL: `https://console.nace.ai`
- URL: `https://console.nace.ai/v1/extraction-schemas/{id}/versions/{version}`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/nace/apis/drex-api/docs/v1/extraction-schemas/:id/versions/:version/get.ts> (a function with typed inputs; its response is checked against the schema)

One version of one of the account's schemas. A version never changes. Free, and works at any balance.

## Path parameters

- `id` string, required
- `version` integer, required

## Response `200`

The version.

- ExtractionSchema
  - `schema_id` string, required: Stable id of the schema across its versions (`sch_...`).
  - `name` string, required
  - `description` string, nullable
  - `version` integer, required
  - `owner` 'account' | 'platform', required: `account` for a schema this account saved.
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required
  - `schema` object: The version's JSON Schema. Always present on a single schema, a version and a list of versions; `GET /v1/extraction-schemas` leaves it out.

## Other responses

- `401`: Missing or invalid API key (`authentication_error`, code `invalid_api_key`).
- `404`: No schema (or version) with this id for this account (`not_found_error`, code `schema_not_found`). Another account's schema id answers the same.
- `429`: Over the account's requests per minute for document routes, or the document service is throttling this account (`rate_limit_error`).
- `500`: Something failed on Drex's side (`internal_error`).
- `502`: The document service refused Drex's own request (`upstream_error`, code `ndi_refused_drex`). Retry later.
- `503`: The document service is unavailable (`service_unavailable`).

---

[API](https://skmtc.dev/nace/apis/drex-api.md) - [All operations](https://skmtc.dev/nace/apis/drex-api/llms.txt) - [OpenAPI document](https://skmtc.dev/nace/apis/drex-api/revisions/a0e62d925a61?raw)