feature-flags-python

Evaluate PostHog feature flags in Python applications with posthog APIs.

58|5|Updated Jan 19, 2026
One-click install
npx skills add https://github.com/PostHog/skills --skill feature-flags-python
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: feature-flags-python
Source: https://github.com/PostHog/skills/tree/main/skills/posthog/feature-flags/skills/python
Command: npx skills add https://github.com/PostHog/skills --skill feature-flags-python

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Python applications often struggle to integrate feature flags from PostHog without tight coupling or hardcoding keys. This skill provides a straightforward API to evaluate flags and react to them safely in Python code, including payloads when necessary.

Core Features & Use Cases

  • Evaluate boolean flags with posthog.feature_enabled and retrieve payloads with posthog.get_feature_flag_payload
  • Retrieve multivariate flags with posthog.get_feature_flag and react to specific variants
  • Include feature flag information in events by enabling send_feature_flags in capture calls
  • Supports common back-end frameworks like Django and Flask for server-side flag evaluation in data pipelines and services

Quick Start

Install the PostHog Python library, initialize the client with your project token and host, then evaluate a flag and react accordingly.

Frequently Asked Questions about feature-flags-python

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I evaluate PostHog feature flags in a Python backend service?

To evaluate PostHog feature flags in Python, install the posthog library, initialize the client with your project token and host, then call feature_enabled for boolean flags or get_feature_flag for multivariate variants. This approach works across Django, Flask, and data pipelines.

Can I retrieve custom payloads from PostHog feature flags in Python?

Yes, you can retrieve custom payloads from PostHog feature flags in Python by using the get_feature_flag_payload method after initializing the posthog client. This allows your server-side application to access flag-specific data for guarded feature rollouts and data pipelines.

Does the PostHog Python library support multivariate flag evaluation?

Yes, the PostHog Python library supports multivariate flag evaluation through the get_feature_flag method. This allows Python applications to retrieve and react to specific variants beyond simple boolean checks, enabling complex guarded rollouts in back-end services.

How do I include feature flag data in Posthog analytics events captured from Python?

To include feature flag data in captured PostHog events from Python, enable the send_feature_flags option in your capture calls. This attaches the active flag information to the event, allowing you to analyze flag impact directly within your PostHog analytics.

What's the best way to manage server-side feature rollouts in Python applications?

The best way to manage server-side feature rollouts in Python applications is using PostHog's API to evaluate flags without hardcoding keys. By initializing the client and using methods like feature_enabled, you achieve safe, decoupled flag evaluation across Django, Flask, and data pipelines.

Why use PostHog for feature flag evaluation instead of hardcoding values in Python?

Using PostHog for feature flag evaluation prevents tight coupling and hardcoded keys in Python applications. It provides a straightforward API to safely evaluate boolean and multivariate flags, retrieve payloads, and include flag information in captures for controlled feature rollouts.