---
title: "Transfer Between Shards"
method: POST
path: "/v1/balance/exchange/shard-transfer"
tags: ["balance"]
---

# Transfer Between Shards

`POST /v1/balance/exchange/shard-transfer`

## Request

- Base URL: `https://api.rivermarkets.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.rivermarkets.com/v1/balance/exchange/shard-transfer`
- Auth: none declared

Move funds between Kalshi exchange shards within the subaccount's own account.

## Request body

- ShardTransferRequest
  - `subaccount_id` string, uuid, required: Non-custodial subaccount whose funds move between shards
  - `source_exchange_shard` integer, required: Shard to move funds from
  - `destination_exchange_shard` integer, required: Shard to move funds to
  - `amount` union, required: Transfer amount in USD
    - number
    - string

## Response `200`

Successful Response

- ShardTransferResponse
  - `transfer_id` string, required

## Other responses

- `422`: Validation Error

## Changes

- **2026-08-21** `c90d562d4ad1`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/rivermarkets/apis/river-finance-api/changes/v1/balance/exchange/shard-transfer/post.md)

---

[API](https://skmtc.dev/rivermarkets/apis/river-finance-api.md) - [All operations](https://skmtc.dev/rivermarkets/apis/river-finance-api/llms.txt) - [OpenAPI document](https://skmtc.dev/rivermarkets/apis/river-finance-api/revisions/3732aea08430?raw)