---
title: "List drift for a stack"
method: GET
path: "/stacks/{stack}/changes-since-last-reconcile"
tags: ["stacks"]
---

# List drift for a stack

`GET /stacks/{stack}/changes-since-last-reconcile`

Retrieves resource modifications (drift) detected since the last reconcile for a given stack.

## Path parameters

- `stack` string, required

## Response `200`

OK: Drift report for the stack.

- ModelModifiedStack
  - `ModifiedResources` ModelResourceModification[]
    - `Label` string
    - `OldProperties` integer[] — properties at last reconcile — update ops only
    - `Operation` string
    - `PatchDocument` integer[] — JSON-patch diff between OldProperties and Properties — update ops only
    - `Properties` integer[] — current (cloud) properties — update ops only
    - `Stack` string
    - `Type` string

## Other responses

- `500` — Internal Server Error.

## Changes

- **2026-03-19** `f875f82677ef` — 1 info
  - endpoint added
- **2025-10-21** `fb06d951574c` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/platform-engineering-labs/apis/formae-rest-api/changes/stacks/:stack/changes-since-last-reconcile/get.md)

---

[API](https://skmtc.dev/platform-engineering-labs/apis/formae-rest-api.md) · [All operations](https://skmtc.dev/platform-engineering-labs/apis/formae-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/platform-engineering-labs/formae-rest-api/revisions/17a8f5fd7318/schema)