---
title: "Changes to Get Hydra service metadata"
method: GET
path: "/hydra/v1/model/info"
---

# Changes to Get Hydra service metadata

`GET /hydra/v1/model/info`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 21 revisions.

- **2026-10-19** `c9aabd44d077`: 1 breaking, 1 warning, 2 info
- **2026-10-19** `17add6e42e9c`: 4 breaking, 5 warning, 8 info
- **2026-04-08** `a46514573a08`: 7 breaking, 4 warning, 1 info
- **2026-03-12** `7aede80020da`: 1 breaking

## Changes

- **2026-10-19** `c9aabd44d077`: 1 breaking, 1 warning, 2 info
  - the `error` response's property type changed from `string` to `object` for status `401`
  - removed the optional property `message` from the response with the `401` status
  - added the required property `error/code` to the response with the `401` status
  - added the required property `error/message` to the response with the `401` status
- **2026-10-19** `17add6e42e9c`: 4 breaking, 5 warning, 8 info
  - removed the required property `accuracy` from the response with the `200` status
  - removed the required property `aucRoc` from the response with the `200` status
  - removed the required property `type` from the response with the `200` status
  - removed the required property `version` from the response with the `200` status
  - removed the optional property `featureImportance` from the response with the `200` status
  - removed the optional property `features` from the response with the `200` status
  - removed the optional property `isProduction` from the response with the `200` status
  - removed the optional property `lastTraining` from the response with the `200` status
  - removed the optional property `trainingSamples` from the response with the `200` status
  - added the optional property `architecture` to the response with the `200` status
  - added the optional property `authentication` to the response with the `200` status
  - added the optional property `licensing` to the response with the `200` status
  - added the optional property `rateLimit` to the response with the `200` status
  - added the required property `endpoints` to the response with the `200` status
  - added the required property `methodology` to the response with the `200` status
  - added the required property `service` to the response with the `200` status
  - added the required property `timestamp` to the response with the `200` status
- **2026-04-08** `a46514573a08`: 7 breaking, 4 warning, 1 info
  - the response property `dataSources` became optional for the status `200`
  - the response property `featureImportance` became optional for the status `200`
  - the response property `features` became optional for the status `200`
  - the response property `isProduction` became optional for the status `200`
  - the response property `lastTraining` became optional for the status `200`
  - the response property `message` became optional for the status `401`
  - the response property `trainingSamples` became optional for the status `200`
  - removed the optional property `dataSources/ooni` from the response with the `200` status
  - removed the optional property `dataSources/sensors` from the response with the `200` status
  - removed the optional property `dataSources/telemetry` from the response with the `200` status
  - removed the optional property `nextTraining` from the response with the `200` status
  - the endpoint scheme security `ApiKeyAuth` was added to the API
- **2026-03-12** `7aede80020da`: 1 breaking
  - removed the required property `federatedNodes` from the response with the `200` status

---

[Operation](https://skmtc.dev/voidly/apis/voidly-api/docs/hydra/v1/model/info/get.md) - [API](https://skmtc.dev/voidly/apis/voidly-api.md) - [Page](https://skmtc.dev/voidly/apis/voidly-api/changes/hydra/v1/model/info/get)