bsm-api-client

Introduction

bsm-api-client is an asynchronous Python client library for interacting with the Bedrock Server Manager API. It provides a convenient way to manage Minecraft Bedrock Dedicated Servers through the manager's HTTP API.

Features

• Fully asynchronous with generated OpenAPI operations, Pydantic contracts, persistent HTTPX REST transport, and aiohttp WebSockets.
• Context manager support for session management.
• Handles authentication (JWT) automatically, including token refresh attempts.
• Generates the typed REST surface from BSM 4.x FastAPI OpenAPI at release time.
• Discovers new core and plugin FastAPI endpoints at runtime without waiting for a client release.
• Provides typed domain services for BSM workflows:
  • Manager Information & Global Actions
  • Server Listing, Status & Configuration
  • Server Actions (Start, Stop, Command, Update, etc.)
  • Content Management (Backups, Worlds, Addons)
• Custom exceptions for specific API errors, providing context like status codes and API messages.
• Supports connecting via HTTP or HTTPS.

Installation

Install the library using pip:

pip install bsm-api-client

Quick Start

Here's a basic example of how to initialize the client and fetch server information:

For a complete list of endpoints and examples, see API_DOCS.md

import asyncio

from bsm_api_client import APIError, BedrockServerManagerApi


async def main():
    try:
        async with BedrockServerManagerApi(
            base_url="http://127.0.0.1:11325",
            username="username",
            password="password",
        ) as client:
            info = await client.application.async_get_info()
            print(info.info)

            fleet = await client.servers.async_get_servers()
            for server in fleet.servers or []:
                print(server.name, server.status, server.version)
    except APIError as error:
        print(f"API request failed: {error}")


if __name__ == "__main__":
    asyncio.run(main())

Generated and dynamic API

BSM 4.x is the source of truth for the REST contract. Generated code is committed, reviewed, and shipped in both wheels and source archives; installation does not run code generation. Endpoint request and response models are the same public Pydantic contracts exposed by bsm_api_client.models.

Use the generated operation-ID interface for ordinary REST operations:

result = await client.rest.start_server(server_name="MyServer")
detailed = await client.rest.start_server_detailed(server_name="MyServer")
print(detailed.status_code, detailed.headers, detailed.parsed)

Services organize SDK workflows under client.servers, client.application, client.tasks, client.players, client.plugins, client.users, client.account, and client.content. Root-level domain methods have been removed; use the corresponding service or the generated operation-ID interface. Runtime plugin contracts are available through client.discovery. Plugin operation groups previously exposed as client.plugins are now client.discovery.plugins (also available as client.plugin_operations).

REST uses a persistent HTTPX client with shared authentication, token refresh, timeouts, and error translation. Pass http_client=httpx.AsyncClient(...) to use caller-owned transport settings; closing the SDK leaves that client open. The session= argument supplies only the WebSocket aiohttp session. The SDK creates an internal WebSocket session lazily and closes only sessions it owns.

For endpoints added after the installed client was released (including plugin FastAPI routers), discover and invoke them at runtime:

operations = await client.discovery.discover()
for operation_id, operation in operations.items():
    print(operation_id, operation.method, operation.path)

result = await client.discovery.call(
    "some_operation_id",
    path_params={"server_name": "MyServer"},
)

Call await client.discovery.refresh() after plugins are reloaded to detect a changed schema. WebSocket routes remain handled by WebSocketClient, because OpenAPI describes HTTP operations rather than WebSocket routes.

Inspect client.capabilities.has("start_server"), client.capabilities.plugins, and client.capabilities.runtime_only after discovery. client.api_diff() compares against the schema shipped in the client, including referenced model changes. ApiOperation supplies the same metadata to the CLI and Python callers.

Generated calls use the facade's shared authentication/retry/error transport:

response = await client.async_call_generated(
    "start_server", parameters={"server_name": "MyServer"}, detailed=True
)
print(response.parsed)  # Generated typed response

See generation and contract conventions for development and plugins.

File operations and runtime discovery

Multipart operations support repeated files and fields. File tuples contain the filename, bytes or readable stream, and content type. Streams start at their current position; use your own file context manager.

await client.async_call_operation(
    "plugin_upload", form_data={"enabled": True},
    files={"files": [("first.mcpack", first_stream, "application/zip"),
                     ("second.mcpack", second_stream, "application/zip")]},
)

async with client.async_stream_operation("plugin_download") as response:
    with open("download.zip", "wb") as output:
        async for chunk in response.aiter_bytes(65536):
            output.write(chunk)

Streaming supports discovered GET operations and releases the connection on exit, including partial reads and cancellation. Regular operation calls buffer responses. JSON, text and binary content are interpreted by the advertised response media type; malformed JSON raises APIError. Set authenticated=False for public operations. Streaming defaults to the operation's advertised security requirements.

from bsm_api_client import compatibility_report
report = compatibility_report(previous_schema, client.schema)

See contract conventions for retry policy, validation, supported serialization and compatibility-report limitations.

Migrating to the service API

Root-level domain methods have been removed. Use client.servers, client.application, client.content, client.tasks, client.players, client.plugins, client.account, or client.users, or call operation-ID methods through client.rest. For example, replace client.async_start_server(name) with client.servers.async_start_server(name). Task status and ban methods return Pydantic models; client.tasks.async_get_task_status(id) returns TaskSnapshot. Use .model_dump(mode="json") when a dictionary is needed.

Pass remember_me=True when creating the SDK to request the backend-configured longer token lifetime on login and reauthentication. The default is False. This option does not extend an existing JWT supplied through jwt_token.