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mnemosyne
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mnemosyne

Active·★ 151·MIT·Updated 2026-10-21

Mnemosyne provides persistent memory for AI agents, enabling them to carry work forward, recover original evidence, and adapt by retiring obsolete lessons when their source changes. It connects memory to its consequences, allowing agents to resume from handoffs, withhold skills after failures, and benefit from a wiser start.

#AI Agents#Persistent Memory#Context Management#Knowledge Base#Semantic Retrieval#SQLite
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Guides
#TypeScript
#Multi-Agent Memory
$ Install
$ git clone --branch v2.0.0-rc.9 --depth 1 https://github.com/28naem-del/mnemosyne.git && cd mnemosyne && npm ci --ignore-scripts && npm run build
↗ Visit site★ GitHub
01

Features

01Memory with evidence: Private-by-default records, explicit sharing, corrections, conflicts, source history, and dependent retirement.
02Continuity across agents: Structured checkpoints preserve goals, decisions, artifacts, and next actions; source changes can retire obsolete handoffs.
03Adaptive context: Budgeted observations, hierarchical summaries, and expandable original source bytes, with evidence revalidation.
04Recall across words and meaning: Scoped BM25 by default; optional embeddings, hybrid fusion, and reranking over authorized records.
05Evidence-gated skills: Candidate procedures, explicit trial requirements, and retirement after failed or changed evidence.
02

Compatibility

Node.js
Runtime
Verified via docs
TypeScript
SDK
Verified via docs
Python
Client
Verified via docs
SQLite
Database
Verified via docs
MCP
Client Protocol
Verified via docs
HTTP
API
Verified via docs
03

Quick start

1
$ git clone --branch v2.0.0-rc.9 --depth 1 https://github.com/28naem-del/mnemosyne.git
2
$ cd mnemosyne
3
$ npm ci --ignore-scripts
4
$ npm run build
04

Use cases

↳Building AI agents that require long-term, verifiable memory for decision-making and learning.
↳Enabling agents to resume complex tasks or projects across multiple sessions or handoffs without losing context.
↳Developing AI systems that adapt to new information by invalidating or correcting outdated knowledge based on source changes.
↳Creating self-improving agents where skills are refined or retired based on trial outcomes and evidence.
↳Managing dynamic context for large language models, ensuring relevance and adherence to evidence within token budgets.
05

Alternatives

⚡Top VS:
VSokf-agent-memory★835→VSmex★1.8k→VSmcp-local-memory★60→

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28naem-del /
mnemosyne
↗

Evidence-backed memory for AI agents: local-first recall, temporal history, tested skills, and gradual migration.

151MIT
Last commit3d ago
StatusActive
CategoryMemory & Context
Links
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