[FEATURE] client evaluation context support

Within other SDKs, we're able to set a context on a client level. Although there is a field within the client, there is no setter for the evaluation context.

We should be able to set a client wide evaluation context, and it should behave as described.

see https://github.com/open-feature/spec/blob/main/specification/assets/gherkin/contextMerging.feature

feat: add set_evaluation_context method to OpenFeatureClient

Hi! 👋

I've implemented this feature in PR #565.

What was added

set_evaluation_context(context) method to the OpenFeatureClient class
Comprehensive tests verifying the setter works and context merging is correct

Implementation details

The client context is now settable and is properly merged during flag evaluation with the correct precedence:

API context → Transaction context → Client context → Invocation context

This matches the behavior described in the OpenFeature spec's context merging feature.

Example usage:

client = api.get_client()
client.set_evaluation_context(EvaluationContext(
    targeting_key="user-123",
    attributes={"email": "user@example.com"}
))

Let me know if any adjustments are needed!

feat: add set_evaluation_context and get_evaluation_context to OpenFe…

I'd like to tackle this — plan to add set_evaluation_context() on the client and merge it with the provider-level context per the spec. PR coming shortly.

feat(client): add get/set_evaluation_context methods

@gruebel

Perhaps this issue needs rescoping. @gruebel mentioned the solution is the missing E2E tests but that's not immediately clear from the description.

test(e2e): add Behave step definitions for context merging

test(e2e): add Behave step definitions for context merging (#593)

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[FEATURE] client evaluation context support #500

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[FEATURE] client evaluation context support #500

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vikasrao23 commented on Feb 21, 2026

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balgaly commented on Apr 14, 2026

danjuv commented on Apr 15, 2026

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