---
title: "Refresh Connection Schema"
method: POST
path: "/api/connections/{id}/schemas/refresh"
tags: ["Schemas"]
---

# Refresh Connection Schema

`POST /api/connections/{id}/schemas/refresh`

Refreshes a connection's cached schemas.

Call this when the upstream source has added, removed, or changed tables,
objects, or fields and you need Polytomic to re-inspect the connection before
creating or updating sync configuration.

This endpoint does not return the refreshed schemas directly. Follow the
`Location` header or poll [`GET /api/connections/{id}/schemas/status`](../../../../../api-reference/schemas/get-status)
until the refresh completes, then fetch the schemas you need.

> 📘 Schema refresh is asynchronous
>
> This endpoint kicks off a background refresh of the connection's cached
> schemas and returns a `Location` header pointing at
> [`GET /api/connections/{id}/schemas/status`](../../../../../api-reference/schemas/get-status).
> Poll that endpoint until `cache_status` transitions from `refreshing` to
> `fresh` (or until `last_refresh_finished` advances past
> `last_refresh_started`) to observe completion.
>
> Only connections whose current health status is healthy may be refreshed.

## Path parameters

- `id` string, uuid, required — Unique identifier of the connection whose schema cache should be refreshed.

## Headers

- `X-Polytomic-Version` string

## Response `202`

Accepted

## Other responses

- `400` — Bad Request
- `404` — Not Found
- `500` — Internal Server Error

---

[API](https://skmtc.net/polytomic/apis/polytomic-api.md) · [All operations](https://skmtc.net/polytomic/apis/polytomic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/polytomic/polytomic-api/versions/b509e00e80aa/schema)