[CI] (3864784) flask/flask3-social-media

[wizard-ci-bot]

Automated wizard CI run

Source: manual
Trigger ID: 3864784
App: flask/flask3-social-media
App directory: apps/flask/flask3-social-media
Workbench branch: wizard-ci-3864784-flask-flask3-social-media
Wizard branch: main
Examples branch: main
PostHog (MCP) branch: master
Timestamp: 2026-01-21T22:24:45.666Z
Duration: 315.3s

[wizard-ci-bot]

Now I have all the information needed to provide a comprehensive evaluation of this PR.

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PR Evaluation Report

Summary

This PR adds PostHog analytics integration to a Flask 3 social media application. It implements event tracking across authentication flows, social interactions, API endpoints, and error handling using the PostHog Python SDK v7+ context-based API pattern.

Files changed	Lines added	Lines removed
9	+190	-1

Confidence score: 4/5 👍

• Missing reverse proxy configuration: No reverse proxy setup to circumvent ad blockers when sending events to PostHog. Events may be blocked by client-side ad blockers. [MEDIUM]
• PII in event properties: Email addresses are being tagged as person properties via tag('email', user.email) in multiple locations. While this is intentional for user identification, it should be explicitly acknowledged as containing PII. [LOW]
• No pageview tracking: This is a server-side Flask app, so client-side pageview tracking is not applicable, but the integration doesn't capture any server-side equivalent for page/route visits. [LOW]

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File changes

Filename	Score	Description
app/__init__.py	5/5	Clean PostHog initialization in create_app() with API key and host from config, debug mode tied to app debug
app/api/tokens.py	4/5	Captures API token generation event with user identification using correct v7+ context API
app/api/users.py	4/5	Tracks API user creation with proper identification and person properties
app/auth/routes.py	4/5	Comprehensive auth flow tracking: login, logout, signup, password reset request/completion
app/errors/handlers.py	5/5	Exception capture for 500 errors with conditional user identification
app/main/routes.py	4/5	Extensive event tracking for core social features: posts, follows, messages, search, exports
config.py	5/5	Proper config setup with environment variables for API key and host
posthog-setup-report.md	4/5	Helpful documentation of changes and suggested insights
requirements.txt	5/5	PostHog package correctly added to dependencies

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App sanity check: 5/5 ✅

Criteria	Result	Description
App builds and runs	Yes	All imports are valid, no syntax errors, standard Flask patterns maintained
Preserves existing env vars & configs	Yes	Existing config preserved, new PostHog vars added additively
No syntax or type errors	Yes	All Python code is syntactically correct
Correct imports/exports	Yes	PostHog imports use v7+ context API correctly: capture, identify_context, new_context, tag
Minimal, focused changes	Yes	Changes are focused on PostHog integration only, no unnecessary modifications to existing logic

Issues

None identified.

Other completed criteria

• Existing Flask application structure preserved
• All original route handlers and business logic unchanged
• Environment variables properly sourced via os.environ.get()
• PostHog initialization happens within Flask app factory pattern
• Error handling patterns maintained (db.session.rollback() preserved)

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PostHog implementation: 4/5 ✅

Criteria	Result	Description
PostHog SDKs installed	Yes	posthog added to requirements.txt
PostHog client initialized	Yes	Initialized in create_app() with posthog.api_key, posthog.host, posthog.debug
capture()	Yes	14 distinct events captured across auth, main routes, API, and errors
identify()	Yes	identify_context(str(user.id)) used within new_context() blocks throughout
Error tracking	Yes	posthog.capture_exception(error) in 500 error handler with user context
Reverse proxy	No	No reverse proxy configuration to circumvent ad blockers

Issues

• No reverse proxy setup: Events sent directly to us.i.posthog.com may be blocked by ad blockers. Consider adding a reverse proxy configuration (e.g., via nginx or Flask route proxy). [MEDIUM]

Other completed criteria

• API key sourced from environment variable, not hardcoded
• Default host properly configured as https://us.i.posthog.com
• Correct use of PostHog Python SDK v7+ context-based API (new_context(), identify_context(), capture(), tag())
• User identification uses stable database ID as distinct_id
• Person properties (email, username) set via tag() function
• Debug mode tied to Flask app debug setting

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PostHog insights and events: 4/5 ✅

Filename	PostHog events	Description
app/auth/routes.py	user_signed_up, user_logged_in, user_logged_out, password_reset_requested, password_reset_completed	Complete auth funnel tracking with signup method differentiation
app/main/routes.py	post_created, profile_updated, user_followed, user_unfollowed, search_performed, message_sent, posts_exported	Core social engagement events with rich properties (post_id, language, body_length, followed_username, query, results_count)
app/api/users.py	api_user_created	API signup tracking with signup_method='api' property
app/api/tokens.py	api_token_generated	API authentication tracking
app/errors/handlers.py	capturedException	500 error exception capture with user context

Issues

• Missing explore/browse tracking: The /explore route has no event tracking, missing opportunity to measure content discovery engagement. [LOW]
• Missing message read tracking: The /messages route doesn't track when users view their messages, missing a key engagement signal. [LOW]

Other completed criteria

• Events represent real user actions and product flows
• Event properties enable segmentation (signup_method, language, body_length, results_count)
• Social graph events (follow/unfollow) include followed user context for network analysis
• Search events capture query and results count for search quality insights
• Comprehensive funnel opportunities documented in setup report (signup→post, login→post→follow)
• API usage trackable separately from web usage via signup_method property

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Reviewed by wizard workbench PR evaluator