Mem0 Python SDK (v2.0.16)

New Features:

• Client: Add reference_date, latest_only, and keyword_search to SearchMemoryOptions, and latest_only to GetAllMemoryOptions, keeping the Python client's typed options in sync with the Platform API and the CLIs (#6696)

Bug Fixes:

• Core: Stop add() metadata from setting a memory's identity scope. _build_filters_and_metadata() now strips user_id, agent_id, run_id, and actor_id from caller-supplied metadata before building the creation template, so metadata can no longer place a memory into a scope that was never passed through the entity params (#6656)
• Vector Stores: Validate Upstash filter keys and values in search(), keyword_search(), and list(). Filter keys must match a safe identifier pattern, values must be str/int/float/bool, and string values containing a double quote or backslash are now rejected instead of being interpolated unescaped into the generated query string (#5981)
• Embeddings: FastEmbedEmbedding.embed() now converts its result with .tolist() before returning, so callers get a plain List[float] instead of a numpy array (#6770)
• Embeddings: HuggingFaceEmbedding now passes api_key to the OpenAI-compatible client when huggingface_base_url is set. The configured key was previously dropped, so the client fell back to OPENAI_API_KEY from the environment or raised OpenAIError at construction when that was unset (#6770)
• Embeddings: Replace Ollama's interactive pip install prompt on import with a plain ImportError. Importing mem0.embeddings.ollama without the ollama package previously blocked on stdin and then called sys.exit(1), killing the host process instead of raising (#6770)
• Core: remove_code_blocks() now returns an empty string for None input instead of raising AttributeError (#6770)
• Core: parse_vision_messages() now chains the original exception (raise ... from e) when an image download fails, so the root cause is preserved in the traceback (#6770)
• Core: process_telemetry_filters(None) now returns ([], {}), matching the two-value tuple every caller unpacks, instead of {} (#6770)
• Core: LlmFactory.create() no longer mutates the caller's config dict in place via .update(kwargs); the merge now builds a new dict (#6770)
• Rerankers: The Cohere, HuggingFace, SentenceTransformer, and Zero Entropy rerankers' failure-fallback path no longer mutates the caller's document dicts in place when stamping rerank_score; it now falls back on copies (#6770)
• Vector Stores: Remove logging.basicConfig() calls from the MongoDB and Vertex AI Vector Search providers, so selecting either provider no longer reconfigures the host application's root logger as a side effect (#6770)