realtime
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, supports current Python versions, and provides low-friction installation. It's the official Supabase Realtime client for Python and is suitable for any project needing real-time messaging, presence tracking, or database change notifications from a Supabase backend.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires a running Supabase Realtime server (local or cloud) and a valid JWT API key with 'exp' and 'role' claims.
- Low install friction with a pure-Python wheel and only three runtime dependencies (pydantic, typing-extensions, websockets).
- Actively maintained with recent commits and supports modern Python versions from 3.9 through 3.14.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions, making it suitable for most projects without licensing concerns.
last release 2026-06-04 (71 days) · last repo commit 2026-08-14 · 107,967 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 42,670,971 downloads/mo, #655 on PyPI
Alternatives
Verify before relying
pip install realtime
from realtime import AsyncRealtimeClient
client = AsyncRealtimeClient("ws://localhost:4000/websocket", "API_KEY")
channel = client.channel("test-channel")
await channel.subscribe(lambda status, err: print(status))- Whether the package handles automatic reconnection and error recovery for dropped WebSocket connections.
- Performance characteristics and latency guarantees for broadcast messages across different network conditions.
- Memory footprint and scalability limits when tracking large numbers of concurrent Presence updates.
What it is and what it does
Realtime is a Python client for Supabase's real-time messaging and state synchronization service. It connects to a Supabase Realtime server over WebSocket and provides three main features: Broadcast for sending ephemeral messages between clients with minimal latency, Presence for tracking and synchronizing shared state across clients using CRDTs, and Postgres CDC for listening to database changes and pushing them to connected clients. The client is async-first, built on pydantic for data validation and websockets for transport.
Typical usage involves creating an AsyncRealtimeClient with a WebSocket URL and API key, instantiating channels for specific topics or database operations, subscribing to events with callbacks, and managing channel lifecycle. It's designed for collaborative applications that need real-time synchronization—multiplayer features, live user tracking, or reactive database updates—without polling.
Use it for
- Share cursor positions and real-time user activity in collaborative editing or whiteboarding applications.
- Track which users are currently viewing or editing specific resources using Presence state.
- Receive and react to database changes in real-time without polling, such as new messages or updated records.
- Build multiplayer game or application features that require low-latency ephemeral message passing.
- Synchronize application state across multiple connected clients with CRDT-based Presence tracking.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, supports current Python versions, and provides low-friction installation. It's the official Supabase Realtime client for Python and is suitable for any project needing real-time messaging, presence tracking, or database change notifications from a Supabase backend.
Install
realtime on PyPI
Before you install
Low install friction with a pure-Python wheel and only three runtime dependencies (pydantic, typing-extensions, websockets). Actively maintained with recent commits and supports modern Python versions from 3.9 through 3.14.
Requires a running Supabase Realtime server (local or cloud) and a valid JWT API key with 'exp' and 'role' claims.
License in practice
MIT license permits commercial and private use with minimal restrictions, making it suitable for most projects without licensing concerns.
Quickstart
pip install realtime
from realtime import AsyncRealtimeClient
client = AsyncRealtimeClient("ws://localhost:4000/websocket", "API_KEY")
channel = client.channel("test-channel")
await channel.subscribe(lambda status, err: print(status))Verify before relying
- Whether the package handles automatic reconnection and error recovery for dropped WebSocket connections.
- Performance characteristics and latency guarantees for broadcast messages across different network conditions.
- Memory footprint and scalability limits when tracking large numbers of concurrent Presence updates.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 3 packagespydantictyping-extensionswebsockets |
| Maintenance | Actively maintained 71 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 42,670,971 / month, #655 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Programming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9 |
Evidence: realtime-2.31.0-py3-none-any.whl
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See also broadcaster · ably · storage3 · supabase-functions · supabase-auth · supabase · pubnub · pypresence · pusher · cent