---
title: "Changes to Update a model router config"
method: PUT
path: "/v1/model-router/configs/{config_id}"
---

# Changes to Update a model router config

`PUT /v1/model-router/configs/{config_id}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 3 revisions.

- **2026-08-12** `5a5597ebb2d6` — 2 breaking, 10 warning, 10 info

## Changes

- **2026-08-12** `5a5597ebb2d6` — 2 breaking, 10 warning, 10 info
  - the `model_chain/anyOf[subschema #1]/` request property's minItems was increased to `1`
  - the `name/anyOf[subschema #1]/` request property's minLength was increased from `0` to `1`
  - the `name/anyOf[subschema #1]/` request property's maxLength was set to `255`
  - the `model_chain/anyOf[subschema #1]/items/config/request_timeout_ms/anyOf[subschema #1]/` request property's max was set to `20000.00`
  - the `model_chain/anyOf[subschema #1]/items/config/temperature/anyOf[subschema #1]/` request property's max was set to `2.00`
  - the `model_chain/anyOf[subschema #1]/items/config/top_p/anyOf[subschema #1]/` request property's max was set to `1.00`
  - the `model_chain/anyOf[subschema #1]/items/config/max_tokens/anyOf[subschema #1]/` request property's min was set to `1.00`
  - the `model_chain/anyOf[subschema #1]/items/config/request_timeout_ms/anyOf[subschema #1]/` request property's min was set to `1000.00`
  - the `model_chain/anyOf[subschema #1]/items/config/temperature/anyOf[subschema #1]/` request property's min was set to `0.00`
  - the `model_chain/anyOf[subschema #1]/items/config/top_p/anyOf[subschema #1]/` request property's min was set to `0.00`
  - added the new `max` enum value to the `model_chain/items/config/reasoning_effort/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `minimal` enum value to the `model_chain/items/config/reasoning_effort/anyOf[subschema #1]/` response property for the response status `200`
  - added the new optional request property `smart_routing_enabled`
  - added the new `max` enum value to the request property `model_chain/anyOf[subschema #1]/items/config/reasoning_effort/anyOf[subschema #1]/`
  - added the new `minimal` enum value to the request property `model_chain/anyOf[subschema #1]/items/config/reasoning_effort/anyOf[subschema #1]/`
  - added the optional property `retry_after` to the response with the `400` status
  - added the optional property `retry_after` to the response with the `401` status
  - added the optional property `retry_after` to the response with the `404` status
  - added the optional property `retryable` to the response with the `400` status
  - added the optional property `retryable` to the response with the `401` status
  - added the optional property `retryable` to the response with the `404` status
  - added the required property `smart_routing_enabled` to the response with the `200` status

---

[Operation](https://skmtc.dev/oneloop-hq/apis/feather-api/docs/v1/model-router/configs/:config_id/put.md) · [API](https://skmtc.dev/oneloop-hq/apis/feather-api.md) · [Page](https://skmtc.dev/oneloop-hq/apis/feather-api/changes/v1/model-router/configs/:config_id/put)