Execute code (streaming)

POST

/execute/async

• Sandbox

Run code and stream stdout/stderr via Server-Sent Events. Unlike /execute, this spawns a fresh subprocess per request. Each SSE message is a JSON StreamEvent.

Authorizations

• BearerAuth

Request Body ^required

object

code

required

Source code to execute.

string

Example

print('hello')

context_id

Link execution to an existing context.

string

language

Language runtime to use.

string

default: python

Allowed values: python py python3 typescript ts javascript js bun node

timeout_ms

Execution timeout in milliseconds.

integer

default: 30000

Responses

200

SSE stream of execution events.

object

type

required

Event type: 0 = stdout, 1 = stderr, 2 = exit, 3 = error.

integer

Allowed values: 0 1 2 3

data

Line of output text.

string

code

Process exit code (only present on exit events).

integer

400

Bad request – validation error.

object

message

required

Summary message.

string

Example

Invalid request

errors

required

Array<object>

object

field

required

JSON field name that failed validation.

string

error

required

Human-readable validation failure.

string

500

Internal error.

object

message

required

Human-readable error message.

string