---
title: "Initialize poste_email_toolathlon sandbox with data"
method: POST
path: "/local-sandbox/poste_email_toolathlon/{sandbox_id}/initialize"
tags: ["local-sandbox"]
---

# Initialize poste_email_toolathlon sandbox with data

`POST /local-sandbox/poste_email_toolathlon/{sandbox_id}/initialize`

Initialize the sandbox with poste_email_toolathlon-specific data following the defined schema.

## Path parameters

- `sandbox_id` string, required — The unique sandbox identifier

## Query parameters

- `init_default_data` boolean — If true, use default test data for initialization

## Request body

- PosteEmailDataInput — Complete Poste Email sandbox data structure. Data is organized per-user, keyed by email address. Each user entry contains their list of email messages across all folders. Example: { "users": { "jsmith@mcp.com": { "emails": [...] } } }
  - `users` object — Per-user email data, keyed by email address

## Response `200`

Successful Response

- InitializeSandboxResponse — Response model for sandbox initialization
  - `sandbox_id` string, required — Sandbox identifier
  - `status` 'idle' | 'occupied' | 'error', required — Status of a sandbox instance - matches database enum
  - `message` string, required — Initialization result message

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/klavis-ai/apis/klavis-ai-https-www-klavis-ai.md) · [All operations](https://skmtc.net/klavis-ai/apis/klavis-ai-https-www-klavis-ai/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/klavis-ai/klavis-ai-https-www-klavis-ai/revisions/1f05ced7280f/schema)