feat(agent): introduce generalized reverse proxy bidirectional streaming evaluation - #575
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saurabh-net wants to merge 3 commits into
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feat(agent): introduce generalized reverse proxy bidirectional streaming evaluation#575saurabh-net wants to merge 3 commits into
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Implements generalized reverse proxy bidirectional streaming architecture for autonomous multi-turn agent evaluation in Evalbench. Key Changes: - evalproto/eval_agent.proto: Defined typed AgentStreamMessage envelopes for turn requests/responses, in-flight remote scoring, remote workspace archival, and session summary delivery. - evalproto/eval_service.proto: Added rpc AgentInteract streaming endpoint. - evalbench/eval_service.py: Implemented AgentInteract servicer bridging streaming clients with in-memory AGENT_PROXY_QUEUES. - evalbench/generators/models/agentic_reverse_proxy.py: Added AgenticReverseProxyGenerator implementing AgentCliGenerator. - evalbench/scorers/remote_scorer.py: Added RemoteScorerProxy and transparent `remote: true` delegation in score.py. - evalbench/reporting/remote_artifact_reporter.py: Added RemoteArtifactReporter and transparent `reporting.gcs.remote: true` delegation. - evalbench/test/agentic_reverse_proxy_test.py: Added comprehensive unit tests.
saurabh-net
requested review from
IsmailMehdi,
helloeve and
prernakakkar-google
as code owners
August 18, 2026 22:30
saurabh-net
marked this pull request as draft
August 18, 2026 22:30
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Summary
This PR introduces generalized reverse proxy bidirectional streaming evaluation into Evalbench, enabling multi-turn autonomous agents running in remote/sandboxed environments to connect via an outbound gRPC stream (
rpc AgentInteract).Key Features
evalproto/eval_agent.proto):TurnRequest/TurnResponse: Carries prompts, multi-turn tool call trajectories (tool_name,parameters_json,output,duration_ms), token statistics, and status codes.ScoringRequest/ScoringResponse: Generic container for named in-flight remote scorers.ArtifactRequest/ArtifactResponse: Generic container for remote workspace archival to GCS.SessionSummaryMessage: Delivers final job score rollups to the connected client upon run completion.evalproto/eval_service.proto&eval_service.py):rpc AgentInteract(stream AgentStreamMessage) returns (stream AgentStreamMessage).AGENT_PROXY_QUEUESand correlation inboxes.AgenticReverseProxyGenerator(evalbench/generators/models/agentic_reverse_proxy.py):AgentCliGeneratorto execute multi-turn agent conversations over the reverse stream.evalbench/scorers/score.py):remote: trueis automatically routed viaRemoteScorerProxyacross the reverse queue.evalbench/reporting/__init__.py):remote: truedelegates workspace archival to the client overArtifactRequest.evalbench/test/agentic_reverse_proxy_test.py):Testing
python -m unittest evalbench/test/agentic_reverse_proxy_test.pypasses (3/3 tests).