---
title: "Check Path Exists"
method: GET
path: "/notebook/check-path"
tags: ["runtime_mutations", "notebook"]
---

# Check Path Exists

`GET /notebook/check-path`

Check if a file path exists.

``session_id`` scopes the check to an isolated run's own prefix (the
``--cloud`` copy-back); absent, it checks the shared workspace.

## Query parameters

- `path` string
- `session_id` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-08-12** `dcf9b4550387` — 1 info
  - added the new optional `query` request parameter `session_id`

[Change history](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/changes/notebook/check-path/get.md)

---

[API](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api.md) · [All operations](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/quadrillion/quadrillion-cloud-api/revisions/f4de1bab5efb/schema)