---
title: "UpdateClient defines a rpc handler method for MsgUpdateClient."
method: POST
path: "/ibc.core.client.v1.Msg/UpdateClient"
tags: ["Msg"]
---

# UpdateClient defines a rpc handler method for MsgUpdateClient.

`POST /ibc.core.client.v1.Msg/UpdateClient`

## Request body

- IbcCoreClientV1MsgUpdateClient — MsgUpdateClient defines an sdk.Msg to update a IBC client state using the given client message.
  - `client_id` string
  - `client_message` GoogleProtobufAny
    - `@type` string
  - `signer` string

## Response `200`

A successful response.

- IbcCoreClientV1MsgUpdateClientResponse — MsgUpdateClientResponse defines the Msg/UpdateClient response type.

## Other responses

- `default` — An unexpected error response.

## Changes

- **2025-03-27** `4f349536c8f3` — 1 info
  - endpoint added
- **2025-02-24** `2ab9d24288c2` — 1 breaking
  - api path removed without deprecation
- **2024-08-14** `21c607e4fa20` — 1 info
  - api operation id `IbcCoreClientV1Msg_UpdateClient` removed and replaced with `FeeMsg_UpdateClient`
- **2024-02-23** `54713b4a9d25` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/pokt-network/apis/http-api-console/changes/ibc.core.client.v1.Msg/UpdateClient/post.md)

---

[API](https://skmtc.dev/pokt-network/apis/http-api-console.md) · [All operations](https://skmtc.dev/pokt-network/apis/http-api-console/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/pokt-network/http-api-console/revisions/4f349536c8f3/schema)