---
title: "Attach to an execution via WebSocket"
method: GET
path: "/v1/boxes/{boxId}/executions/{execId}/attach"
tags: ["boxlite"]
---

# Attach to an execution via WebSocket

`GET /v1/boxes/{boxId}/executions/{execId}/attach`

## Path parameters

- `boxId` string, required
- `execId` string, required

## Other responses

- `101` — Switching Protocols
- `404` — execution not found
- `409` — already attached

## Changes

> 9 revisions in range; 1 could not be searched.

- **2026-06-09** `6c7a14acacbf` — 1 info
  - endpoint added
- **2026-05-02** `6565d7237d5f` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/boxlite-ai/apis/boxlite-runner-api/changes/v1/boxes/:boxId/executions/:execId/attach/get.md)

---

[API](https://skmtc.dev/boxlite-ai/apis/boxlite-runner-api.md) · [All operations](https://skmtc.dev/boxlite-ai/apis/boxlite-runner-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/boxlite-ai/boxlite-runner-api/revisions/ddf7875fb7ed/schema)