Bound builder runs and require a2a-pack 0.1.76

agent.py

@@ -39,6 +39,7 @@ class BuilderConfig(BaseModel):
 
 _URL_RE = re.compile(r"https?://[a-zA-Z0-9._-]+\.[a-zA-Z]{2,}[\w/?#%&=.-]*")
 DEEPAGENTS_RECURSION_LIMIT = 500
+BUILDER_WALL_TIMEOUT_SECONDS = 25 * 60
 
 
 class AgentBuilder(A2AAgent[BuilderConfig, NoAuth]):
@@ -165,8 +166,7 @@ class AgentBuilder(A2AAgent[BuilderConfig, NoAuth]):
                 await asyncio.sleep(20)
                 await ctx.emit_progress(f"agent-builder still working on {name!r}")
 
-        heartbeat_task = asyncio.create_task(_heartbeat())
+        async def _run_build_graph() -> None:
-        try:
             async for event in graph.astream_events(
                 {"messages": [{"role": "user", "content": user_msg}]},
                 version="v2",
@@ -193,8 +193,43 @@ class AgentBuilder(A2AAgent[BuilderConfig, NoAuth]):
                     out = data.get("output")
                     if isinstance(out, dict):
                         final_state = out
+
+        heartbeat_task = asyncio.create_task(_heartbeat())
+        try:
+            await asyncio.wait_for(
+                _run_build_graph(),
+                timeout=BUILDER_WALL_TIMEOUT_SECONDS,
+            )
+        except TimeoutError:
+            return {
+                "ok": False,
+                "status": "failed",
+                "stop_reason": "builder_timeout",
+                "name": name,
+                "workspace_dir": f"agents/{name}/",
+                "error": (
+                    "agent-builder exceeded its wall-clock budget before "
+                    "reaching a terminal result"
+                ),
+            }
+        except asyncio.CancelledError:
+            return {
+                "ok": False,
+                "status": "canceled",
+                "stop_reason": "builder_canceled",
+                "name": name,
+                "workspace_dir": f"agents/{name}/",
+                "error": "agent-builder was canceled before it reached a terminal result",
+            }
         except Exception as exc:  # noqa: BLE001
-            return {"error": _build_failure_error(exc)}
+            return {
+                "ok": False,
+                "status": "failed",
+                "stop_reason": "builder_failed",
+                "name": name,
+                "workspace_dir": f"agents/{name}/",
+                "error": _build_failure_error(exc),
+            }
         finally:
             heartbeat_task.cancel()
             with suppress(asyncio.CancelledError):
@@ -298,4 +333,4 @@ def _build_failure_error(exc: BaseException) -> str:
             "or a smaller build scope"
         )
     return f"build graph failed: {type(exc).__name__}: {exc}"
-# rebuild against a2a-pack 0.1.75 for source-grant-aware agent updates
+# rebuild against a2a-pack 0.1.76 for source-grant-aware agent updates

agent_builder/tools.py

@@ -31,7 +31,7 @@ if TYPE_CHECKING:
     from .config import Settings
 
 
-A2A_PACK_MIN_VERSION = "0.1.75"
+A2A_PACK_MIN_VERSION = "0.1.76"
 
 
 @dataclass(frozen=True)

requirements.txt

@@ -1,4 +1,4 @@
-a2a-pack>=0.1.75
+a2a-pack>=0.1.76
 httpx>=0.27
 boto3>=1.34
 deepagents>=0.5.0