---
title: "list_extraction_schema_versions"
method: GET
path: "/v1/extraction-schemas/{schema_id}/versions"
tags: ["extraction-schemas"]
---

# list_extraction_schema_versions

`GET /v1/extraction-schemas/{schema_id}/versions`

## Request

- Base URL: `https://ndi-api.nace.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://ndi-api.nace.ai/v1/extraction-schemas/{schema_id}/versions`
- Auth: API key in header `X-API-Key`
- TypeScript: <https://skmtc.dev/nace/apis/ndi-service/docs/v1/extraction-schemas/:schema_id/versions/get.ts> (a function with typed inputs; its response is checked against the schema)

Page the immutable version history of one visible schema family.

## Path parameters

- `schema_id` string, required: Stable schema family id (``sch_...``).

## Query parameters

- `cursor` string, nullable: Opaque cursor from a previous page's `next_cursor`. Omit for the first page.
- `limit` integer: Rows per page.

## Response `200`

Successful Response

- PageExtractionSchema
  - `items` ExtractionSchema[], required: This page's rows, in the list's order.
    - `schema_id` string, required
    - `name` string, required
    - `description` string, nullable
    - `version` integer, required
    - `owner` 'platform' | 'tenant', required
    - `created_at` string, date-time, required
    - `updated_at` string, date-time, required
    - `schema` object, required
  - `next_cursor` string, nullable: Opaque; null means the last page.
  - `total_count` integer, required: Exact, and filtered by the caller's access predicate.

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `402`: Payment Required
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `410`: Gone
- `413`: Request Entity Too Large
- `422`: Unprocessable Entity
- `424`: Failed Dependency
- `429`: Too Many Requests
- `500`: Internal Server Error
- `501`: Not Implemented
- `503`: Service Unavailable
- `504`: Gateway Timeout

---

[API](https://skmtc.dev/nace/apis/ndi-service.md) - [All operations](https://skmtc.dev/nace/apis/ndi-service/llms.txt) - [OpenAPI document](https://skmtc.dev/nace/apis/ndi-service/revisions/d9d1f8ec2207?raw)