---
title: "Changes to Cost basis for the caller’s active wallet: holdings valued at read time, realized disposals, unmatched disposals, and skipped legs"
method: GET
path: "/users/{id}/cost-basis"
---

# Changes to Cost basis for the caller’s active wallet: holdings valued at read time, realized disposals, unmatched disposals, and skipped legs

`GET /users/{id}/cost-basis`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 3 revisions.

- **2026-09-13** `af4c974abc44`: 6 breaking, 3 info

## Changes

- **2026-09-13** `af4c974abc44`: 6 breaking, 3 info
  - the response property `disposals/items/chainId` became nullable for the status `200`
  - the response property `holdings/items/chainId` became nullable for the status `200`
  - the response property `unmatchedDisposals/items/chainId` became nullable for the status `200`
  - the `disposals/items/chainId` response's property type changed from `number` to `object` for status `200`
  - the `holdings/items/chainId` response's property type changed from `number` to `object` for status `200`
  - the `unmatchedDisposals/items/chainId` response's property type changed from `number` to `object` for status `200`
  - added the required property `disposals/items/chainKey` to the response with the `200` status
  - added the required property `holdings/items/chainKey` to the response with the `200` status
  - added the required property `unmatchedDisposals/items/chainKey` to the response with the `200` status

---

[Operation](https://skmtc.dev/dre/apis/dre-api/docs/users/:id/cost-basis/get.md) - [API](https://skmtc.dev/dre/apis/dre-api.md) - [Page](https://skmtc.dev/dre/apis/dre-api/changes/users/:id/cost-basis/get)