---
title: "Check connector connection"
method: POST
path: "/pipeline_check"
tags: ["Stateless Sync API"]
---

# Check connector connection

`POST /pipeline_check`

Validates the source/destination config and tests connectivity. Streams NDJSON messages (connection_status, log, trace) tagged with _emitted_by.

## Response `200`

NDJSON stream of check messages

## Other responses

- `400` — Invalid params

## Changes

- **2026-04-20** `98cef0c30f36` — 1 breaking
  - the `header` request parameter `x-pipeline` became required
- **2026-04-20** `1e719ad9a31f` — 1 breaking
  - removed the request body
- **2026-04-20** `8bea86f53f8e` — 1 info
  - added the optional property `oneOf[#/components/schemas/LogMessage]/log/data` to the response with the `200` status
- **2026-04-20** `cef36747fb38` — 3 breaking, 4 warning, 3 info
  - added the new required request property `pipeline/destination/oneOf[subschema #1]/postgres/aws/database`
  - added the new required request property `pipeline/destination/oneOf[subschema #1]/postgres/aws/host`
  - added the new required request property `pipeline/destination/oneOf[subschema #1]/postgres/aws/user`
  - removed the request property `pipeline/destination/oneOf[subschema #1]/postgres/database`
  - …6 more
- **2026-04-19** `846342af247c` — 1 info
  - added the new optional request property `pipeline/source/oneOf[subschema #1]/stripe/account_created`

[Full history](https://skmtc.dev/stripe/apis/stripe-sync-engine/changes/pipeline_check/post.md)

---

[API](https://skmtc.dev/stripe/apis/stripe-sync-engine.md) · [All operations](https://skmtc.dev/stripe/apis/stripe-sync-engine/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/stripe/stripe-sync-engine/revisions/c19b0d0a0631/schema)