This release is a pre-release and may not be stable for production use.
sondera-harness-adk
Sondera Harness governance plugin for Google ADK 2.x agents. Wraps every ADK callback point (user message, model, tool, run lifecycle) with policy adjudication against the Sondera Platform.
The package's public surface is deliberately narrow: only
SonderaHarnessPlugin is exported from the top-level package.
Installation
uv add sondera-harness-adk
Quick Start
from google.adk import Agent
from google.adk.runners import Runner
from sondera_harness_adk import SonderaHarnessPlugin
from sondera_harness_adk.harness import SonderaRemoteHarness
# Endpoint/token resolve from SONDERA_HARNESS_ENDPOINT / SONDERA_API_TOKEN
# (or ~/.sondera/env) when not passed explicitly.
harness = SonderaRemoteHarness()
plugin = SonderaHarnessPlugin(harness=harness)
agent = Agent(name="my-agent", model="gemini-2.5-flash", ...)
runner = Runner(agent=agent, app_name="my-app", plugins=[plugin])
SonderaHarnessPlugin accepts any sondera_harness_adk.abc.Harness
implementation, so custom harnesses (e.g. a local policy engine) can be
substituted for SonderaRemoteHarness.
License
MIT — see LICENSE.
1 maintainer
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