# Fixes for RedisDb, MMRReranker, FieldLabeledCSVReader and AgentOSClient

> This Agno release makes RedisDb.keyword_search honor its limit, has MMRReranker return nothing for a limit of zero or less, rejects page_size=0 in FieldLabeledCSVReader, and corrects the AgentOSClient.continue_agent_run docstring.

- Published: 2026-10-27
- Author: Ayoub
- Categories: Changelog
- Canonical: https://www.agno.com/blog/fixes-for-redisdb-mmrreranker-fieldlabeledcsvreader-and-agentosclient
- Markdown: https://www.agno.com/blog/fixes-for-redisdb-mmrreranker-fieldlabeledcsvreader-and-agentosclient.md

This Agno release fixes four small bugs in knowledge search, CSV reading and the AgentOS client. Each one ran without a model key, so the output below is real, from the earlier release and this one.

## RedisDb keyword search honors the limit

`RedisDb.keyword_search` now passes `limit` to redisvl as `num_results`. Before this fix redisvl fell back to its default of 10, so asking for 3 or 50 results still got 10. A `MagicMock` stood in for the redisvl index here to capture the query it received:

```python
db = RedisDb(index_name="recipes", redis_client=fakeredis.FakeRedis(), embedder=embedder, search_type=SearchType.keyword)
db.index = MagicMock(query=MagicMock(return_value=[]))  # stand-in for redisvl's SearchIndex
db.keyword_search("curry", limit=3)
print(db.index.query.call_args[0][0]._num_results)
```

```text
# Before
10

# Now
3
```

## MMRReranker keeps nothing when the limit is zero

`MMRReranker.rerank` and `arerank` return an empty list for a `limit` of zero or less. The selection used to start with the closest match before it checked the limit, so a caller asking for nothing still got one document. These runs use the release's test stub embedder over three documents:

```text
# Before
rerank(limit=0):  ['a']
rerank(limit=-1): ['a']
arerank(limit=0): ['a']

# Now
rerank(limit=0):  []
rerank(limit=-1): []
arerank(limit=0): []
```

## FieldLabeledCSVReader rejects page_size=0

`FieldLabeledCSVReader.async_read` raises a `ValueError` for `page_size=0`, as it already did for negative values. On a file with 12 data rows, earlier releases logged an error and returned nothing:

```text
# Before
ERROR   Error reading async: <_io.StringIO object>: range() arg 3 must not be zero
documents: 0

# Now
ValueError: page_size must be a positive value.
```

## AgentOSClient docstring drops stream

The `AgentOSClient.continue_agent_run` docstring no longer lists a `stream` argument. The method never had one. It returns one `RunOutput`, and a `stream=True` you pass lands in `**kwargs` without an error while the response still arrives in one piece. Use `continue_agent_run_stream` to stream. The method's code is unchanged.

See the [MMR cookbook](https://github.com/agno-agi/agno/blob/main/cookbook/07_knowledge/02_building_blocks/08_mmr_diverse_results.py), and learn more about [MMR reranking](https://docs.agno.com/knowledge/concepts/search-and-retrieval/reranking#diversify-results-with-mmr) and the [AgentOS Client](https://docs.agno.com/agent-os/client/agentos-client) in the documentation.