mnemo-db

PyPI distribution of Mnemo — an MCP-native memory database for AI agents.

pip install mnemo-db

The package directory and import path are still mnemo — only the PyPI distribution name has the -db suffix because the unqualified mnemo is held by an unrelated 2021 notebook project. Your code keeps saying:

from mnemo import MnemoClient

Quick start

from mnemo import MnemoClient

client = MnemoClient(db_path="agent.mnemo.db", agent_id="agent-1")

# Three primitives carry most workflows.
result = client.remember("The user prefers dark mode", tags=["preference"])
memories = client.recall("user preferences", limit=5)
client.forget([result["id"]])

# Mem0-compatible aliases also work:
# client.add(...), client.search(...), client.delete(...)

# Write provenance + FORGET BY PROVENANCE — audit who wrote what, then clean up.
prov = client.write_provenance(result["id"])        # who wrote it, under what authority
client.writes_by_principal("agent-1")                # everything a principal wrote
client.forget_by_principal("agent-1", "hard_delete") # revoke it all (audit trail survives)

# Each provenance record has a `flags` list. On remember(), content shaped like a
# provider opaque reasoning payload (arXiv:2608.09867 — these have leaked secrets
# in the wild) is flagged "opaque_reasoning_payload" and RECORDED, not rejected,
# so you can revoke it by principal/session later. It detects a SHAPE — not proof
# a secret is present — and never decodes the content.
if "opaque_reasoning_payload" in (prov or {}).get("flags", []):
    client.forget_by_session(prov["session_id"], "redact")

What's in the box

Surface What
MnemoClient Native PyO3 binding to the Rust engine — DuckDB storage, USearch HNSW vector index, Tantivy full-text index, hybrid retrieval, hash-chained audit log
MnemoMemoryToolServer Anthropic memory_20250818 6-op handler. pip install 'mnemo-db[anthropic-memory-tool]'
MnemoLettaShared Letta-style Conversations adapter for shared agent memory
S3Workspace / CloudflareR2Workspace OpenAI Agents SDK GA snapshot store backends. pip install 'mnemo-db[openai-sandbox-s3]' or [openai-sandbox-r2]
MnemoAgentMemory (OpenAI), Mem0Compat, MnemoCheckpointer (LangGraph 1.x — ASMDCheckpointer is the back-compat alias), 12 more Drop-in framework integrations. Install the matching extra.

Optional extras

pip install 'mnemo-db[langgraph]'              # LangGraph checkpoint
pip install 'mnemo-db[crewai]'                 # CrewAI memory
pip install 'mnemo-db[openai-agents]'          # OpenAI Agents SDK
pip install 'mnemo-db[claude]'                 # Claude Agent SDK
pip install 'mnemo-db[anthropic-memory-tool]'  # memory_20250818
pip install 'mnemo-db[openai-sandbox-s3]'      # S3 workspace backend
pip install 'mnemo-db[openai-sandbox-r2]'      # Cloudflare R2 workspace backend
pip install 'mnemo-db[benchmark]'              # LoCoMo / LongMemEval harness

Each extra fails closed if not installed — from mnemo import MnemoMemoryToolServer will raise ImportError cleanly when [anthropic-memory-tool] isn't on the path.

License + source

Source: https://github.com/sattyamjjain/mnemo. Apache-2.0.

Documentation: https://github.com/sattyamjjain/mnemo#readme. Issues: https://github.com/sattyamjjain/mnemo/issues.

Project links

Data verified by PyPI on Aug 19, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

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  • Released:
Newer release available (0.5.28)

1 maintainer

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Avatar for sattyamjjain from gravatar.com sattyamjjain

GitHub Statistics

Data verified by PyPI on Aug 19, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

Apache Software License (Apache-2.0)

Requires

Python >=3.9

Provides Extra

anthropic-memory-tool benchmark claude crewai dev langgraph openai-agents openai-sandbox-azure openai-sandbox-gcs openai-sandbox-r2 openai-sandbox-s3

Tags

mnemo mcp memory ai agent llm vector embeddings knowledge-graph duckdb

Classifiers

Report project as malware

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0.5.28

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0.5.27

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This release

0.5.26 This release

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0.5.25

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0.5.24

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0.5.23

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0.5.12

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0.5.11

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0.4.3

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0.4.2

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0.4.0rc2

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