Create Code Context

POST/v1/sandbox/{sandbox_id}/code/context

POST/v1/sandbox/{'{sandbox_id}'}/code/context

Base URL *

Your instance endpoint, shown on the instance page in the dashboard. Each instance has its own host; there is no shared API host.

Authorization (Bearer token)

sandbox_id (path) *

Request Body (JSON)

Description

Creates a persistent REPL (Read-Eval-Print Loop) code context within the specified sandbox. A code context maintains interpreter state — variables, imports, and definitions — across multiple code execution requests, enabling interactive and stateful code evaluation sessions.

Path Parameters

Parameter	Type	Required	Description
`sandbox_id`	`string`	Yes	Sandbox ID or name

Request Body

Property	Type	Required	Description
`language`	`string`	Yes	Programming language for the REPL context. Supported values: `"python"`

Responses

201 Created

Property	Type	Description
`id`	`string`	Unique ID of the created code context
`language`	`string`	Programming language of the REPL context
`sandbox_id`	`string`	ID of the sandbox this context belongs to
`created_at`	`string`	ISO 8601 timestamp when the context was created

default An unexpected error response.

Property	Type	Description
`code`	`integer`
`message`	`string`
`details`	`object[]`

Request

curl -X POST "https://{instance}.{region}.everstack.ai/v1/sandbox/{sandbox_id}/code/context" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"python"}'

const sandboxId = "your-sandbox-id";
const response = await fetch(`https://{instance}.{region}.everstack.ai/v1/sandbox/${sandboxId}/code/context`, {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "language": "python",
  }),
});
const data = await response.json();

import requests

sandbox_id = "your-sandbox-id"
response = requests.post(
    f"https://{instance}.{region}.everstack.ai/v1/sandbox/{sandbox_id}/code/context",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "language": "python",
    },
)
data = response.json()

Response

{
  "id": "string",
  "language": "python",
  "sandbox_id": "string",
  "created_at": "string"
}

{
  "code": 0,
  "message": "string",
  "details": [
    {
      "@type": "string"
    }
  ]
}