diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index bfaab56f6..0c0c0c357 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
{
- ".": "1.24.0"
+ ".": "1.25.0"
}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index de0a6c03f..ce5304ba8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,23 @@
# Changelog
+## 1.25.0 (2026-07-24)
+
+Full Changelog: [v1.24.0...v1.25.0](https://github.com/runloopai/api-client-python/compare/v1.24.0...v1.25.0)
+
+### Features
+
+* **mux:** wait_for_eviction endpoint for flex eviction notifications ([#10325](https://github.com/runloopai/api-client-python/issues/10325)) ([c06794d](https://github.com/runloopai/api-client-python/commit/c06794d413f37be16ee5955fe31b07b92b8adbc8))
+
+
+### Bug Fixes
+
+* **mux:** field-level merge on network policy egress updates ([#10338](https://github.com/runloopai/api-client-python/issues/10338)) ([cfc97ef](https://github.com/runloopai/api-client-python/commit/cfc97ef55a65e88abb0d76f733cf51dc33823fb0))
+
+
+### Chores
+
+* **stainless:** generate watch_evictions as an SSE stream ([#10404](https://github.com/runloopai/api-client-python/issues/10404)) ([0413e7b](https://github.com/runloopai/api-client-python/commit/0413e7ba4cd10b919a3fc50e67e0238dc95f4b18))
+
## 1.24.0 (2026-07-22)
Full Changelog: [v1.23.3...v1.24.0](https://github.com/runloopai/api-client-python/compare/v1.23.3...v1.24.0)
diff --git a/api.md b/api.md
index fc7f676a3..6becb60c5 100644
--- a/api.md
+++ b/api.md
@@ -245,7 +245,7 @@ Methods:
- client.devboxes.suspend(id) -> DevboxView
- client.devboxes.upload_file(id, \*\*params) -> object
- client.devboxes.wait_for_command(execution_id, \*, devbox_id, \*\*params) -> DevboxAsyncExecutionDetailView
-- client.devboxes.watch_evictions() -> DevboxEvictionEventView
+- client.devboxes.watch_evictions() -> DevboxEvictionEventView
- client.devboxes.write_file_contents(id, \*\*params) -> DevboxExecutionDetailView
diff --git a/pyproject.toml b/pyproject.toml
index 77d099e9e..2fe9fc3e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
[project]
name = "runloop_api_client"
-version = "1.24.0"
+version = "1.25.0"
description = "The official Python library for the runloop API"
dynamic = ["readme"]
license = "MIT"
diff --git a/src/runloop_api_client/_version.py b/src/runloop_api_client/_version.py
index 5e32f9066..54818c6b0 100644
--- a/src/runloop_api_client/_version.py
+++ b/src/runloop_api_client/_version.py
@@ -1,4 +1,4 @@
# File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
__title__ = "runloop_api_client"
-__version__ = "1.24.0" # x-release-please-version
+__version__ = "1.25.0" # x-release-please-version
diff --git a/src/runloop_api_client/resources/devboxes/devboxes.py b/src/runloop_api_client/resources/devboxes/devboxes.py
index 0a3fdade5..19578d24c 100644
--- a/src/runloop_api_client/resources/devboxes/devboxes.py
+++ b/src/runloop_api_client/resources/devboxes/devboxes.py
@@ -1762,7 +1762,7 @@ def watch_evictions(
and delivery is not guaranteed.
"""
return self._get(
- "/v1/devboxes/watch_evictions",
+ "/v1/devboxes/evictions/watch",
options=make_request_options(
extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
),
@@ -3464,7 +3464,7 @@ async def watch_evictions(
and delivery is not guaranteed.
"""
return await self._get(
- "/v1/devboxes/watch_evictions",
+ "/v1/devboxes/evictions/watch",
options=make_request_options(
extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
),
diff --git a/src/runloop_api_client/sdk/async_.py b/src/runloop_api_client/sdk/async_.py
index 6319e02bd..aa2df16ae 100644
--- a/src/runloop_api_client/sdk/async_.py
+++ b/src/runloop_api_client/sdk/async_.py
@@ -46,6 +46,7 @@
from .async_devbox import AsyncDevbox
from .async_scorer import AsyncScorer
from .async_secret import AsyncSecret
+from .async_eviction import shutdown_monitor_for as shutdown_eviction_monitor
from .async_scenario import AsyncScenario
from .async_snapshot import AsyncSnapshot
from .async_benchmark import AsyncBenchmark
@@ -1373,6 +1374,7 @@ def __init__(
async def aclose(self) -> None:
"""Close the underlying HTTP client and release resources."""
+ await shutdown_eviction_monitor(self.api)
await self.api.close()
async def __aenter__(self) -> "AsyncRunloopSDK":
diff --git a/src/runloop_api_client/sdk/async_devbox.py b/src/runloop_api_client/sdk/async_devbox.py
index bed785a7d..796732006 100644
--- a/src/runloop_api_client/sdk/async_devbox.py
+++ b/src/runloop_api_client/sdk/async_devbox.py
@@ -35,6 +35,7 @@
from ._helpers import filter_params
from .._streaming import AsyncStream
from ..lib.polling import PollingConfig
+from .async_eviction import AsyncEvictionCallback, monitor_for as _eviction_monitor_for
from ..types.devboxes import ExecutionUpdateChunk
from .async_execution import AsyncExecution, _AsyncStreamingGroup
from .async_execution_result import AsyncExecutionResult
@@ -216,6 +217,25 @@ async def await_suspended(self, *, polling_config: PollingConfig | None = None)
"""
return await self._client.devboxes.await_suspended(self._id, polling_config=polling_config)
+ async def on_evict(self, callback: AsyncEvictionCallback) -> None:
+ """Register a callback fired once if this devbox gets a pending infrastructure eviction.
+
+ The first ``on_evict`` across any devbox on this client opens a single
+ account-wide notification stream; it closes automatically once every
+ registered devbox has been notified. The callback runs at most once and is
+ invoked as ``callback(devbox, eviction_deadline_ms)`` — the devbox itself and
+ the Unix millisecond deadline by which it will be suspended. Use it to run
+ cleanup before the devbox is suspended. The callback may be sync or async.
+
+ :param callback: Callable invoked with this devbox and its eviction deadline (ms).
+ :type callback: AsyncEvictionCallback
+ """
+ await _eviction_monitor_for(self._client).register(self, callback)
+
+ async def cancel_on_evict(self) -> None:
+ """Withdraw this devbox's eviction interest registered via :meth:`on_evict`."""
+ await _eviction_monitor_for(self._client).unregister(self._id)
+
async def shutdown(
self,
**options: Unpack[LongRequestOptions],
diff --git a/src/runloop_api_client/sdk/async_eviction.py b/src/runloop_api_client/sdk/async_eviction.py
new file mode 100644
index 000000000..dd384a09c
--- /dev/null
+++ b/src/runloop_api_client/sdk/async_eviction.py
@@ -0,0 +1,155 @@
+"""Async client-side eviction notification monitor.
+
+Async counterpart of :mod:`runloop_api_client.sdk.eviction`; see that module for the
+delivery contract. Callbacks may be plain functions or coroutines.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import inspect
+import logging
+from typing import TYPE_CHECKING, Dict, Tuple, Union, Callable, Optional, Awaitable
+from weakref import WeakKeyDictionary
+
+if TYPE_CHECKING:
+ from ..types import DevboxEvictionEventView
+ from .._client import AsyncRunloop
+ from .._streaming import AsyncStream
+ from .async_devbox import AsyncDevbox
+
+AsyncEvictionCallback = Callable[["AsyncDevbox", int], Union[None, Awaitable[None]]]
+"""Sync or async callable invoked once with the devbox and its eviction deadline (ms)."""
+
+_logger = logging.getLogger(__name__)
+
+
+class AsyncEvictionMonitor:
+ """Async fan-out of account-wide eviction notifications to per-devbox callbacks."""
+
+ def __init__(self, client: "AsyncRunloop") -> None:
+ self._client = client
+ self._lock = asyncio.Lock()
+ self._callbacks: Dict[str, Tuple["AsyncDevbox", AsyncEvictionCallback]] = {}
+ self._task: Optional["asyncio.Task[None]"] = None
+ self._stream: Optional["AsyncStream[DevboxEvictionEventView]"] = None
+
+ async def register(self, devbox: "AsyncDevbox", callback: AsyncEvictionCallback) -> None:
+ """Add ``devbox`` to the interest set, starting the stream task if idle."""
+ async with self._lock:
+ self._callbacks[devbox.id] = (devbox, callback)
+ if self._task is None or self._task.done():
+ self._task = asyncio.create_task(self._run(), name="runloop-eviction-monitor")
+
+ async def unregister(self, devbox_id: str) -> None:
+ """Drop ``devbox_id``; close the stream if it was the last interested devbox."""
+ async with self._lock:
+ self._callbacks.pop(devbox_id, None)
+ empty = not self._callbacks
+ if empty:
+ await self._close_stream()
+
+ async def close(self) -> None:
+ """Clear all interest and tear down the stream."""
+ async with self._lock:
+ self._callbacks.clear()
+ await self._close_stream()
+
+ # Reconnect backoff bounds (seconds). The server force-closes the stream on purpose — on a
+ # leader change (FAILED_PRECONDITION) or a slow consumer (RESOURCE_EXHAUSTED) — and expects the
+ # client to reconnect and re-read the snapshot, which re-delivers anything missed. So a single
+ # stream ending is normal, not terminal: reconnect until no devbox is still interested.
+ _RECONNECT_BACKOFF_INITIAL_S = 0.5
+ _RECONNECT_BACKOFF_MAX_S = 30.0
+
+ async def _run(self) -> None:
+ backoff = self._RECONNECT_BACKOFF_INITIAL_S
+ try:
+ while True:
+ async with self._lock:
+ if not self._callbacks:
+ return
+ try:
+ # Force the SSE Accept header: the endpoint only streams for
+ # text/event-stream; the generated client's default (application/json) gets an
+ # empty text/plain response, so the feed would silently deliver nothing.
+ stream = await self._client.devboxes.watch_evictions(extra_headers={"Accept": "text/event-stream"})
+ async with self._lock:
+ self._stream = stream
+ _logger.debug("async eviction monitor stream connected")
+ async with stream:
+ async for event in stream:
+ _logger.debug("async eviction monitor received event for %s", event.devbox_id)
+ await self._dispatch(event)
+ async with self._lock:
+ if not self._callbacks:
+ return
+ # Clean end (server closed the stream): reset backoff and reconnect if still
+ # interested. The reconnect's snapshot re-delivers still-pending evictions.
+ backoff = self._RECONNECT_BACKOFF_INITIAL_S
+ _logger.debug("async eviction monitor stream ended; reconnecting")
+ except asyncio.CancelledError:
+ raise
+ except Exception:
+ # An intentional teardown (close/unregister clears the interest set, then closes
+ # the stream) surfaces here as a read error — exit quietly in that case.
+ async with self._lock:
+ interested = bool(self._callbacks)
+ if not interested:
+ return
+ # Routine: the server force-closes on leader change / slow consumer, and a
+ # long-lived stream can drop (e.g. an HTTP/2 disconnect). Reconnecting recovers
+ # it, so keep this at debug to avoid log spam.
+ _logger.debug("async eviction monitor stream error; reconnecting", exc_info=True)
+ async with self._lock:
+ if not self._callbacks:
+ return
+ await asyncio.sleep(backoff)
+ backoff = min(backoff * 2, self._RECONNECT_BACKOFF_MAX_S)
+ finally:
+ async with self._lock:
+ self._stream = None
+ self._task = None
+
+ async def _dispatch(self, event: "DevboxEvictionEventView") -> None:
+ async with self._lock:
+ entry = self._callbacks.pop(event.devbox_id, None)
+ if entry is None:
+ return
+ devbox, callback = entry
+ try:
+ result = callback(devbox, event.eviction_deadline_ms)
+ if inspect.isawaitable(result):
+ await result
+ except Exception:
+ _logger.exception("error in eviction callback for devbox %s", event.devbox_id)
+
+ async def _close_stream(self) -> None:
+ async with self._lock:
+ stream = self._stream
+ self._stream = None
+ if stream is not None:
+ try:
+ await stream.close()
+ except Exception:
+ _logger.debug("error closing eviction stream", exc_info=True)
+
+
+# asyncio is single-threaded, so the registry needs no lock.
+_monitors: "WeakKeyDictionary[AsyncRunloop, AsyncEvictionMonitor]" = WeakKeyDictionary()
+
+
+def monitor_for(client: "AsyncRunloop") -> AsyncEvictionMonitor:
+ """Return the shared :class:`AsyncEvictionMonitor` for ``client``, creating it once."""
+ monitor = _monitors.get(client)
+ if monitor is None:
+ monitor = AsyncEvictionMonitor(client)
+ _monitors[client] = monitor
+ return monitor
+
+
+async def shutdown_monitor_for(client: "AsyncRunloop") -> None:
+ """Tear down the shared monitor for ``client`` if one exists."""
+ monitor = _monitors.pop(client, None)
+ if monitor is not None:
+ await monitor.close()
diff --git a/src/runloop_api_client/sdk/devbox.py b/src/runloop_api_client/sdk/devbox.py
index c97ea2682..3c7d6123a 100644
--- a/src/runloop_api_client/sdk/devbox.py
+++ b/src/runloop_api_client/sdk/devbox.py
@@ -34,6 +34,7 @@
from .._types import omit
from .._client import Runloop
from ._helpers import filter_params
+from .eviction import EvictionCallback, monitor_for as _eviction_monitor_for
from .execution import Execution, _StreamingGroup
from .._streaming import Stream
from ..lib.polling import PollingConfig
@@ -219,6 +220,25 @@ def await_suspended(self, *, polling_config: PollingConfig | None = None) -> Dev
"""
return self._client.devboxes.await_suspended(self._id, polling_config=polling_config)
+ def on_evict(self, callback: EvictionCallback) -> None:
+ """Register a callback fired once if this devbox gets a pending infrastructure eviction.
+
+ The first ``on_evict`` across any devbox on this client opens a single
+ account-wide notification stream; it closes automatically once every
+ registered devbox has been notified. The callback runs at most once and is
+ invoked as ``callback(devbox, eviction_deadline_ms)`` — the devbox itself and
+ the Unix millisecond deadline by which it will be suspended. Use it to run
+ cleanup before the devbox is suspended.
+
+ :param callback: Callable invoked with this devbox and its eviction deadline (ms).
+ :type callback: EvictionCallback
+ """
+ _eviction_monitor_for(self._client).register(self, callback)
+
+ def cancel_on_evict(self) -> None:
+ """Withdraw this devbox's eviction interest registered via :meth:`on_evict`."""
+ _eviction_monitor_for(self._client).unregister(self._id)
+
def shutdown(
self,
**options: Unpack[LongRequestOptions],
diff --git a/src/runloop_api_client/sdk/eviction.py b/src/runloop_api_client/sdk/eviction.py
new file mode 100644
index 000000000..476062f6b
--- /dev/null
+++ b/src/runloop_api_client/sdk/eviction.py
@@ -0,0 +1,177 @@
+"""Client-side eviction notification monitor.
+
+Backs :meth:`runloop_api_client.sdk.devbox.Devbox.on_evict`. A single account-wide
+SSE stream (the generated ``devboxes.watch_evictions`` endpoint) is opened lazily
+the moment the first devbox registers interest, and torn down as soon as the last
+interested devbox has been notified.
+
+Delivery contract:
+
+* The server replays every currently-pending eviction on connect, so a devbox that
+ registers after its eviction was scheduled is still notified.
+* Notifications for devboxes not in the interest set are discarded.
+* A devbox is removed from the interest set *before* its callback runs, so the
+ callback fires at most once even if the server repeats the notification.
+"""
+
+from __future__ import annotations
+
+import time
+import logging
+import threading
+from typing import TYPE_CHECKING, Dict, Tuple, Callable, Optional
+from weakref import WeakKeyDictionary
+
+if TYPE_CHECKING:
+ from ..types import DevboxEvictionEventView
+ from .devbox import Devbox
+ from .._client import Runloop
+ from .._streaming import Stream
+
+EvictionCallback = Callable[["Devbox", int], None]
+"""Invoked once when the devbox it was registered for has a pending eviction.
+
+Receives the :class:`~runloop_api_client.sdk.devbox.Devbox` and the eviction
+deadline as a Unix timestamp in milliseconds.
+"""
+
+_logger = logging.getLogger(__name__)
+
+
+class EvictionMonitor:
+ """Fans account-wide eviction notifications out to per-devbox callbacks.
+
+ One monitor is shared by every :class:`~runloop_api_client.sdk.devbox.Devbox`
+ built from the same generated client (see :func:`monitor_for`), so all
+ registered devboxes are served by a single SSE connection.
+ """
+
+ def __init__(self, client: "Runloop") -> None:
+ self._client = client
+ self._lock = threading.Lock()
+ self._callbacks: Dict[str, Tuple["Devbox", EvictionCallback]] = {}
+ self._thread: Optional[threading.Thread] = None
+ self._stream: Optional["Stream[DevboxEvictionEventView]"] = None
+
+ def register(self, devbox: "Devbox", callback: EvictionCallback) -> None:
+ """Add ``devbox`` to the interest set, starting the stream if idle."""
+ with self._lock:
+ self._callbacks[devbox.id] = (devbox, callback)
+ if self._thread is None or not self._thread.is_alive():
+ self._thread = threading.Thread(
+ target=self._run,
+ name="runloop-eviction-monitor",
+ daemon=True,
+ )
+ self._thread.start()
+
+ def unregister(self, devbox_id: str) -> None:
+ """Drop ``devbox_id``; close the stream if it was the last interested devbox."""
+ with self._lock:
+ self._callbacks.pop(devbox_id, None)
+ empty = not self._callbacks
+ if empty:
+ self._close_stream()
+
+ def close(self) -> None:
+ """Clear all interest and tear down the stream."""
+ with self._lock:
+ self._callbacks.clear()
+ self._close_stream()
+
+ # Reconnect backoff bounds (seconds). The server force-closes the stream on purpose — on a
+ # leader change (FAILED_PRECONDITION) or a slow consumer (RESOURCE_EXHAUSTED) — and expects the
+ # client to reconnect and re-read the snapshot, which re-delivers anything missed. So a single
+ # stream ending is normal, not terminal: reconnect until no devbox is still interested.
+ _RECONNECT_BACKOFF_INITIAL_S = 0.5
+ _RECONNECT_BACKOFF_MAX_S = 30.0
+
+ def _run(self) -> None:
+ backoff = self._RECONNECT_BACKOFF_INITIAL_S
+ try:
+ while True:
+ with self._lock:
+ if not self._callbacks:
+ return
+ try:
+ # Force the SSE Accept header: the endpoint only streams for
+ # text/event-stream; the generated client's default (application/json) gets an
+ # empty text/plain response, so the feed would silently deliver nothing.
+ stream = self._client.devboxes.watch_evictions(extra_headers={"Accept": "text/event-stream"})
+ with self._lock:
+ self._stream = stream
+ _logger.debug("eviction monitor stream connected")
+ with stream:
+ for event in stream:
+ _logger.debug("eviction monitor received event for %s", event.devbox_id)
+ self._dispatch(event)
+ with self._lock:
+ if not self._callbacks:
+ return
+ # Clean end (server closed the stream): reset backoff and reconnect if still
+ # interested. The reconnect's snapshot re-delivers still-pending evictions.
+ backoff = self._RECONNECT_BACKOFF_INITIAL_S
+ _logger.debug("eviction monitor stream ended; reconnecting")
+ except Exception:
+ # An intentional teardown (close/unregister clears the interest set, then closes
+ # the stream) surfaces here as a read error — exit quietly in that case.
+ with self._lock:
+ interested = bool(self._callbacks)
+ if not interested:
+ return
+ # Routine: the server force-closes on leader change / slow consumer, and a
+ # long-lived stream can drop (e.g. an HTTP/2 disconnect). Reconnecting recovers
+ # it, so keep this at debug to avoid log spam.
+ _logger.debug("eviction monitor stream error; reconnecting", exc_info=True)
+ with self._lock:
+ if not self._callbacks:
+ return
+ time.sleep(backoff)
+ backoff = min(backoff * 2, self._RECONNECT_BACKOFF_MAX_S)
+ finally:
+ with self._lock:
+ self._stream = None
+ self._thread = None
+
+ def _dispatch(self, event: "DevboxEvictionEventView") -> None:
+ with self._lock:
+ entry = self._callbacks.pop(event.devbox_id, None)
+ if entry is None:
+ return
+ devbox, callback = entry
+ try:
+ callback(devbox, event.eviction_deadline_ms)
+ except Exception:
+ _logger.exception("error in eviction callback for devbox %s", event.devbox_id)
+
+ def _close_stream(self) -> None:
+ with self._lock:
+ stream = self._stream
+ self._stream = None
+ if stream is not None:
+ try:
+ stream.close()
+ except Exception:
+ _logger.debug("error closing eviction stream", exc_info=True)
+
+
+_monitors: "WeakKeyDictionary[Runloop, EvictionMonitor]" = WeakKeyDictionary()
+_monitors_lock = threading.Lock()
+
+
+def monitor_for(client: "Runloop") -> EvictionMonitor:
+ """Return the shared :class:`EvictionMonitor` for ``client``, creating it once."""
+ with _monitors_lock:
+ monitor = _monitors.get(client)
+ if monitor is None:
+ monitor = EvictionMonitor(client)
+ _monitors[client] = monitor
+ return monitor
+
+
+def shutdown_monitor_for(client: "Runloop") -> None:
+ """Tear down the shared monitor for ``client`` if one exists."""
+ with _monitors_lock:
+ monitor = _monitors.pop(client, None)
+ if monitor is not None:
+ monitor.close()
diff --git a/src/runloop_api_client/sdk/sync.py b/src/runloop_api_client/sdk/sync.py
index 7d3afcb24..957299a7f 100644
--- a/src/runloop_api_client/sdk/sync.py
+++ b/src/runloop_api_client/sdk/sync.py
@@ -45,6 +45,7 @@
from .._types import Timeout, NotGiven, not_given
from .._client import DEFAULT_MAX_RETRIES, Runloop
from ._helpers import detect_content_type
+from .eviction import shutdown_monitor_for as shutdown_eviction_monitor
from .scenario import Scenario
from .snapshot import Snapshot
from .benchmark import Benchmark
@@ -1398,6 +1399,7 @@ def __init__(
def close(self) -> None:
"""Close the underlying HTTP client and release resources."""
+ shutdown_eviction_monitor(self.api)
self.api.close()
def __enter__(self) -> "RunloopSDK":