Rone Arena Python SDK

rone-arena is the community Python SDK for the Rone Arena API — an unofficial, community-maintained data API for the game Mobile Legends: Bang Bang.

• Default base: https://arena-hv.fastapicloud.dev/api (high-volume host)
• Standard base: https://arena.rone.dev/api
• API docs: https://arena.rone.dev/api/docs
• Client groups: academy, heroes, user, addon

Install

pip install rone-arena

Quick Start

from rone_arena import RoneArena

client = RoneArena()

heroes = client.heroes.heroes(size=5, index=1, order="desc", lang="en")
academy_roles = client.academy.roles(lang="en")
win_rate = client.addon.win_rate_calculator(match_now=100, wr_now=50, wr_future=60)

print(heroes)
print(academy_roles)
print(win_rate)

Every SDK method returns API JSON as a Python dictionary.

Migrating from OpenMLBB

This package supersedes OpenMLBB, which was renamed so the project's own branding no longer uses a trademark it does not own. The method surface is unchanged — only the install, the import, the client class, and the hero namespace differ.

Old	New
pip install OpenMLBB	pip install rone-arena
from OpenMLBB import OpenMLBB	from rone_arena import RoneArena
OpenMLBB()	RoneArena()
OpenMLBBError	RoneArenaError
MlbbClient	HeroesClient
client.mlbb.heroes(...)	client.heroes.heroes(...)

The default base URL also moved from openmlbb.fastapicloud.dev to the renamed high-volume host arena-hv.fastapicloud.dev.

Versioning restarted at 1.0.0 with the rebrand, so it now tracks the Rone Arena API rather than continuing the MLBB-era 4.x line. rone-arena 4.2.0 was a one-off first upload under the new name and has been yanked; pin rone-arena>=1.0.0.

Endpoint Coverage

The SDK follows the same route coverage as the API routers:

• academy: version, heroes, roles, equipment, spells, emblems, ranks, recommendations, ratings
• heroes: hero list, rank, positions, details, stats, combos, trends, relations, counters, compatibility
• user: auth, profile, stats, privacy, season, matches, hero matches, friends
• addon: win-rate calculator, IP lookup

See the interactive API docs at https://arena.rone.dev/api/docs for endpoint-by-endpoint details.

Common Examples

from rone_arena import RoneArena

client = RoneArena()

# academy
academy_version = client.academy.meta_version(size=20, index=1, order="desc", lang="en")

# heroes
hero_list = client.heroes.heroes(size=10, index=1, order="desc", lang="en")

# addon
wr_calc = client.addon.win_rate_calculator(match_now=100, wr_now=50, wr_future=60)

print(academy_version)
print(hero_list)
print(wr_calc)

Handling downtime (HTTP 503)

The API returns 503 while it is in maintenance mode or shedding load, and names a host to try instead. The SDK raises ServiceUnavailableError for that case, with the suggested host already parsed out:

from rone_arena import RoneArena, RoneArenaError, ServiceUnavailableError

client = RoneArena()

try:
    heroes = client.heroes.heroes(size=5)
except ServiceUnavailableError as exc:
    print(exc)                       # includes the alternative endpoint
    print(exc.status_code)           # 503
    if exc.alternative_endpoint:     # fail over to the host the API suggested
        client = RoneArena(base_url=f"{exc.alternative_endpoint}/api")
        heroes = client.heroes.heroes(size=5)
except RoneArenaError as exc:
    print("request failed:", exc)

ServiceUnavailableError subclasses RoneArenaError, so existing except RoneArenaError blocks keep catching it. Order the handlers as above if you want to treat downtime specially. alternative_endpoint is None when the response body does not name one.

Pointing at a different host

The SDK defaults to the high-volume host. To use the standard host instead:

client = RoneArena(base_url="https://arena.rone.dev/api", timeout=30)

User-Agent

The default User-Agent is:

RoneAI-RoneArena-Python-SDK

You can override it by passing user_agent= to RoneArena(...).

Disclaimer

This is an unofficial, community-maintained project. It is not affiliated with, endorsed by, sponsored by, or associated with Shanghai Moonton Technology Co., Ltd. "Mobile Legends: Bang Bang", "MLBB", and all related names, marks, logos, and in-game assets are trademarks of their respective owners. Data is sourced from publicly accessible endpoints and provided for informational, educational, and analytical purposes only.

License

BSD 3-Clause License.