z4j-flask 1.0.1

z4j Flask framework adapter (Apache 2.0) - Phase 1.1

z4j-flask

License: Apache 2.0 Status: v1.0.0 - first public release.

Flask framework adapter for z4j. Flask-extension shape - one Z4J(app) call and the agent boots on the first request.

Install

pip install z4j-flask z4j-celery z4j-celerybeat

Pick the engine adapter(s) that match your stack:

pip install z4j-flask z4j-rq z4j-rqscheduler
pip install z4j-flask z4j-dramatiq z4j-apscheduler

Configure

Register the extension the standard Flask way:

from flask import Flask
from z4j_flask import Z4J

app = Flask(__name__)
app.config.update(
    Z4J_BRAIN_URL="https://z4j.internal",
    Z4J_TOKEN="z4j_agent_...",        # minted in the brain dashboard
    Z4J_PROJECT_ID="my-project",
)

z4j = Z4J(app)

Or use the application-factory pattern:

z4j = Z4J()

def create_app():
    app = Flask(__name__)
    app.config.from_envvar("FLASK_CONFIG")
    z4j.init_app(app)
    return app

On the first request, the agent connects to the brain and z4j's dashboard populates with every Celery / Dramatiq task your workers discover.

What it does

Piece	Purpose
Z4J(app)	Flask extension; hooks into the app lifecycle
Config from app.config	Reads Z4J_* keys - idiomatic Flask configuration
Lazy boot	Agent starts on first request, not at import time (so flask --help stays fast)
Teardown integration	Flushes the event buffer on SIGTERM / graceful shutdown

Reliability

z4j-flask follows the project-wide safety rule: z4j never breaks your Flask app. Agent failures are caught at the boundary, logged, and swallowed.

Documentation

• Quickstart (Flask)
• Install guide
• Architecture

License

Apache 2.0 - see LICENSE. Your Flask application is never AGPL-tainted by importing z4j_flask.

Links

• Homepage: https://z4j.com
• Documentation: https://z4j.dev
• Issues: https://github.com/z4jdev/z4j-flask/issues
• Changelog: CHANGELOG.md
• Security: [e-mail] (see SECURITY.md)