---
title: "Country DTW cohort history"
method: GET
path: "/v1/atlas/cohort-migration/{cc}"
tags: ["Atlas model and score"]
---

# Country DTW cohort history

`GET /v1/atlas/cohort-migration/{cc}`

## Request

- Base URL: `https://api.voidly.ai`
- URL: `https://api.voidly.ai/v1/atlas/cohort-migration/{cc}`
- Auth: none declared

Example illustrates the valid unclustered-country response, not a current finding about IR. Source candidate: Worker GET proxy and forecast_api.py handler. Synthetic response fields below do not establish current production state.

## Path parameters

- `cc` string, required

## Response `200`

Synthetic contract example from handler source; values are not a live receipt.

- object
  - `schema` string
  - `country_code` string
  - `in_top_50` boolean
  - `history` unknown[]
    - unknown
  - `current_cohort` string, nullable
  - `previous_cohort` string, nullable
  - `changed_this_snapshot` boolean
  - `note` string
  - `honest_caveats` unknown[]
    - unknown

## Other responses

- `400`: Exact handler error shape.
- `503`: Exact handler error shape.

## Changes

- **2026-10-09** `3205a03feae3`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/voidly/apis/voidly-api/changes/v1/atlas/cohort-migration/:cc/get.md)

---

[API](https://skmtc.dev/voidly/apis/voidly-api.md) - [All operations](https://skmtc.dev/voidly/apis/voidly-api/llms.txt) - [OpenAPI document](https://skmtc.dev/voidly/apis/voidly-api/revisions/c085ac335933?raw)