---
title: "Changes to Update Key Fn"
method: POST
path: "/key/update"
---

# Changes to Update Key Fn

`POST /key/update`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 42 revisions.

- **2026-09-18** `082b5fabd909` — 17 info

## Changes

- **2026-09-18** `082b5fabd909` — 17 info
  - added the new optional request property `budget_fallbacks`
  - added the new optional request property `default_estimated_output_tokens`
  - added the new optional request property `default_estimated_output_tokens_per_model`
  - added the new optional request property `disable_global_guardrails`
  - added the new optional request property `enable_prompt_caching`
  - added the new optional request property `mcp_rpm_limit`
  - added the new optional request property `object_permission/anyOf[subschema #1: LiteLLM_ObjectPermissionBase]/mcp_tool_search_enabled`
  - added the new optional request property `router_settings/anyOf[subschema #1: UpdateRouterConfig]/enable_tag_filtering`
  - added the new optional request property `router_settings/anyOf[subschema #1: UpdateRouterConfig]/optional_pre_call_checks`
  - added the new optional request property `router_settings/anyOf[subschema #1: UpdateRouterConfig]/retry_policy`
  - added the new optional request property `router_settings/anyOf[subschema #1: UpdateRouterConfig]/tag_routing_prefix`
  - added the new optional request property `tag_rpm_limit`
  - added the new optional request property `throttle_on_budget_exceeded`
  - the request property `key` became optional
  - request property `key` list-of-types was widened by adding types `null` to media type `application/json`
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status

---

[Operation](https://skmtc.dev/flock/apis/litellm-api/docs/key/update/post.md) · [API](https://skmtc.dev/flock/apis/litellm-api.md) · [Page](https://skmtc.dev/flock/apis/litellm-api/changes/key/update/post)