Registry / http-networking / flipt-client

flipt-client

library1.4.1pypypi✓ verified 89d ago

Python client for Flipt feature flag evaluation. Version 1.4.1 supports synchronous and asynchronous evaluation via REST and gRPC. Active development with monthly releases.

http-networking devops

pip install flipt-client

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · FLIPT-CLIENT

flipt-client

http-networkingpythonv1.4.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

FliptEvaluationClient

✓ from flipt_client import FliptEvaluationClient

Main client class for synchronous evaluation.

FliptEvaluationClientAsync

✓ from flipt_client import FliptEvaluationClientAsync

Async client for non-blocking evaluation.

Create a client and evaluate a boolean/variant flag.

import os from flipt_client import FliptEvaluationClient client = FliptEvaluationClient( namespace="default", url="http://localhost:8080", authentication_token=os.environ.get('FLIPT_AUTH_TOKEN', '') ) flag_key = "my-flag" entity_id = "user123" context = {"plan": "enterprise"} response = client.evaluate_variant(flag_key, entity_id, context) print(response.match) print(response.variant_key)

Debug

Known issues

breakingThe constructor argument 'auth_token' was renamed to 'authentication_token' in v1.3.0.

fix

Use 'authentication_token' instead of 'auth_token'.

affects: <1.3.0

gotchaIf the Flipt server is unreachable, the client may raise a connection error; ensure the gRPC or HTTP port is correct.

fix

Verify the 'url' includes the correct port (e.g., http://localhost:8080 for REST, localhost:9000 for gRPC).

affects: all

deprecatedThe synchronous client uses requests under the hood; consider switching to async for high-throughput scenarios.

fix

Use FliptEvaluationClientAsync for non-blocking calls.

affects: all

Errors

Common errors & fixes

flipt_client.exceptions.FliptClientError: Failed to connect to remote host

Flipt server not running or wrong URL/port.

fix

Start the Flipt server and double-check the 'url' parameter (e.g., http://localhost:8080).

flipt_client.exceptions.FliptClientError: Invalid authentication token

The 'authentication_token' is missing or incorrect.

fix

Set FLIPT_AUTH_TOKEN environment variable or pass a valid token to the client.

Upgrade

Version history

1.4.1latest on PyPI · released Dec 8, 2025

Audit

Dependencies

No dependency data recorded yet.

Agent activity

6 hits · last 30 days

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Resources

githubhttps://github.com/flipt-io/flipt-client-sdks ↗

packagehttps://pypi.org/project/flipt-client/ ↗

homepagehttps://flipt.io ↗