[ShivamSharma43]

Problem

to_compat_task_status_update_event set final=True only for terminal states (completed, canceled, failed, rejected). When an agent stops at input-required or auth-required, a v0.3 message/stream still closes after that status update, but the update arrives with final: false. The v0.3 field means "this is the final event in the stream for this interaction", so v0.3 clients never get a final: true event for an interrupted turn.

Here is a v0.3 JSON-RPC message/stream against a 1.0 DefaultRequestHandler with enable_v0_3_compat=True. The agent emits working and then the given state, then returns. Output on main:

TASK_STATE_INPUT_REQUIRED -> stream closed after 3 events
    task submitted final= None
    status-update working final= False
    status-update input-required final= False
TASK_STATE_AUTH_REQUIRED -> stream closed after 3 events
    ...
    status-update auth-required final= False
TASK_STATE_COMPLETED -> stream closed after 3 events
    ...
    status-update completed final= True

a2a-go's v0.3 compat layer sets Final for input-required as well (a2acompat/a2av0/conversions.go, FromV1TaskStatusUpdateEvent).

Fix

Compute final from the core state using TERMINAL_TASK_STATES | INTERRUPTED_TASK_STATES. These are the same states DefaultRequestHandlerV2 stops tailing a stream on. With the fix, the run above reports final= True for input-required and auth-required.

Tests

test_task_status_update_event_conversion_terminal_states now expects final=True for input-required and auth-required. Submitted, working and unspecified still expect final=False. The updated test fails on main and passes with the fix. scripts/lint.sh is clean. I ran uv run pytest on Windows: 2532 passed. The only failures came from the local environment: os.killpg in the cross-version harness, cp1252 console encoding in the samples smoke test, and one xdist-only flake that passes when run alone.

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🧪 Code Coverage (vs main)

⬇️ Download Full Report

	Base	PR	Delta
src/a2a/server/cluster/database_event_stream.py	92.73%	93.64%	🟢 +0.91%
Total	93.48%	93.49%	🟢 +0.01%

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