chore(deps): update mem0ai requirement from >=0.1.0 to >=2.0.0

[dependabot]

Updates the requirements on mem0ai to permit the latest version.

Release notes

Sourced from mem0ai's releases.

Mem0 Python SDK (v2.0.0)

A ground-up redesign of how memories are extracted, stored, and retrieved — plus a long-overdue cleanup of the SDK surface.

Highlights

• New extraction algorithm — single-pass, ADD-only, roughly half the latency
• Multi-signal hybrid retrieval — semantic + BM25 keyword + entity matching fused into one score
• Built-in entity linking — replaces graph memory with no external store to manage
• Cleaner SDK surface — constructor and method signatures aligned with the Platform API

What's new

Single-pass ADD-only extraction

One LLM call per add(). No separate UPDATE/DELETE pass. The model now spends its capacity on understanding the input instead of diffing against existing memories, and agent-generated facts ("I've booked your flight for March 3rd") are captured as first-class memories for the first time. Hash-based deduplication prevents exact duplicates; ranking at retrieval time handles the rest.

Hybrid retrieval

Semantic vector similarity, BM25 keyword matching, and entity-graph boosting are normalized and fused into a single score on every result. The fusion adapts at runtime — if spaCy or fastembed aren't installed, search gracefully degrades to semantic-only instead of breaking.

Entity linking (replaces graph memory)

Entities (proper nouns, quoted text, compound noun phrases) are extracted automatically during add() and stored in a parallel {collection}_entities collection inside your existing vector store. At query time, entities from the query boost ranking on matching memories. No Neo4j, Memgraph, Kuzu, or Apache AGE deployment needed — ~4,000 lines of graph driver code have been removed from the SDK.

Vector store enhancements

All 15 vector stores now implement keyword_search() and search_batch(). Qdrant uses sparse vectors (BM25) alongside dense vectors in the same collection via fastembed; every other store uses its native full-text capability with no extra dependency.

Stricter, clearer validation

• Empty or whitespace-only entity IDs raise ValueError with a specific message
• threshold must be in [0, 1] — out-of-range values raise instead of silently behaving oddly
• messages=None or wrong type raises Mem0ValidationError (code VALIDATION_003)
• custom_fact_extraction_prompt → renamed to custom_instructions (consolidates with custom_update_memory_prompt, which was deprecated)

Platform client

• MemoryClient(api_key="...") — org_id / project_id no longer in the constructor
• get_all returns a paginated envelope: {count, next, previous, results}
• add is async by default and returns {status: "PENDING", event_id} — poll /v1/event/{event_id}/ for completion
• Removed: api_version, output_format, async_mode, enable_graph, filter_memories, expiration_date, keyword_search, force_add_only, batch_size, immutable, includes, excludes, org_name, project_name

Breaking changes at a glance

Change	Migration
Entity IDs on search() / get_all()	Must be inside filters={"user_id": "..."}; top-level kwargs now raise ValueError
top_k default 100 → 20	Pass top_k=100 explicitly to restore
threshold default None → 0.1	Pass threshold=0.0 to disable
rerank default True → False	Pass rerank=True to restore
graph_store / enable_graph	Removed — uninstall graph drivers
custom_update_memory_prompt	Removed — use custom_instructions
qdrant-client	Bumped to >=1.12.0
upstash-vector	Bumped to >=0.6.0

... (truncated)

Commits

• fb22408 chore(release): promote Python SDK to 2.0.0 and TS SDK to 3.0.0 (#4860)
• 30469ae docs: new algorithm migration guides + memory evaluation (#4811)
• 50db9e4 chore(release): bump SDK versions to next beta (#4859)
• fb87349 fix(oss): v3 entity cleanup, filter fixes, and QA hardening (TS + Python) (#4...
• 8827553 fix: adopt new v3 memory endpoints in Python + TS clients (#4856)
• c8e20a9 fix(docs): resolve duplicate operationIds and expiration_date type in openapi...
• 93a51f4 test: update integration tests for v1.1 output_format (#4847)
• 86fe275 fix(ts): entity store isolation, backward compat, pgvector + redis init fixes...
• e6d6276 refactor: add entity ID and search param validation, rename textLemmatized fi...
• 9692726 fix(ts-oss): isolate entity store from memory store by default (#4829)
• Additional commits viewable in compare view

[dependabot]

Superseded by #9.