---
id: late-sdk
version: "1.4.507"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# late-sdk — The official Python library for the Zernio API

License: permissive · Maintenance: active · Downloads: 107.3K/mo

## What it is and what it does

This is an official Python SDK for publishing and managing social media content across 16 major platforms through a single unified API. Instead of integrating separately with each platform, you write one call and it routes your post to whichever accounts you specify, with optional platform-specific content customization. The SDK handles authentication, scheduling, media upload, and analytics retrieval.

It wraps httpx for HTTP requests and uses pydantic for request/response validation. The library supports both synchronous and asynchronous workflows, bulk operations from CSV, and detailed error handling with specific exception types. Backward compatibility is maintained—old imports from the 'late' package still work alongside the new namespace.

Use it for:

- Publish a single post to multiple platforms simultaneously with one API call.
- Schedule posts across multiple platforms for a specific date and time.
- Upload media once and distribute to multiple platforms with platform-specific metadata.
- Retrieve analytics and engagement metrics across all connected accounts.
- Bulk import and schedule posts from CSV across social media accounts.
- Customize post content per platform with different text and media per destination.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Official Python SDK for publishing social media posts across 16 platforms with a single API call, supporting Instagram, TikTok, YouTube, LinkedIn, X/Twitter, Facebook, Pinterest, Threads, Bluesky, Reddit, Snapchat, Telegram, WhatsApp, and Google Business Profile.

Yes. The SDK is actively maintained, has no known vulnerabilities, low install friction, and a permissive Apache-2.0 license. Install it if you need to publish to multiple social platforms from Python code. The unified API simplifies multi-platform workflows compared to managing separate integrations. Verify that platform coverage and pricing match your use case before committing.

## Install

pip install late-sdk
uv add late-sdk
poetry add late-sdk

## Installing late-sdk

Before you install: Low friction install with only two runtime dependencies (httpx, pydantic). Active maintenance with latest release on 2026-08-14. Supports Python 3.10 through 3.13.

License in practice: Apache-2.0 permissive license allows commercial use, modification, and distribution with minimal restrictions—suitable for most projects.

Quickstart:

pip install late-sdk

from late import Late

client = Late()  # reads LATE_API_KEY from environment
post = client.posts.create(
    content="Hello world",
    platforms=[{"platform": "twitter", "accountId": "acc_xxx"}],
    publish_now=True
)

Requires an API key (set via LATE_API_KEY or ZERNIO_API_KEY environment variable or passed explicitly) and connected social media accounts.

Verify before relying:

- Rate limiting behavior and quotas for the API backend.
- Whether media upload file size limits vary by platform.
- Async performance characteristics under concurrent requests.
- Specific platform coverage and any regional restrictions.

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 107.3K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

social media posting sdk, multi-platform post scheduling, cross-platform social publishing, social media automation, unified social api, batch social posting, social media management api, social-media-api, multi-platform, async-support

[View on SkillFed](https://skillfed.io/packages/late-sdk) · [View on PyPI](https://pypi.org/project/late-sdk/)