EchoMind Memory Engine

What EchoMind Memory Engine does

EchoMind Memory Engine gives agents long-term memory that remembers preferences, code style, fixes and research methods. It stores seven types of memory, User, Task, Experience, Context, Knowledge, Research and Reflection, in a single SQLite file, with schema migration and transactional writes and no Docker, PostgreSQL or Redis required. A self-evolving engine agent distills semantic knowledge and procedural rules from raw memories and discards low-confidence reflections to limit hallucination pollution.

Stale records are down-ranked or excluded with an Ebbinghaus forgetting curve, and each entry moves through an Active, Stale, Archived and Superseded lifecycle. Retrieval combines keywords, reinforcement-learning weights adjusted by user feedback and LLM semantics. Knowledge entries carry an epistemic mode that separates user-provided facts from inference, and a provenance chain records the origin agent and session. A compact Markdown block can be injected into LLM context, and a root register(ctx) entry point with plugin.yaml kind: exclusive adapts it to Hermes v0.20 and later, compatible with v0.13 to v0.20.

Key features

• Seven memory types stored in one local SQLite file
• Ebbinghaus forgetting curve and an Active, Stale, Archived, Superseded lifecycle
• Self-evolving reflection that discards low-confidence conclusions
• Reinforcement-learning weights adjusted by user feedback
• Epistemic classification that separates user facts from inference
• Markdown memory dossier export and a compact context injection block

When to use it

• Having an agent remember your coding style and past bug fixes across sessions
• Reusing previously fixed bugs and chosen models as recommendations
• Auditing where a stored piece of knowledge came from

Who it is for: Users of Hermes Agent, OpenClaw, OpenCode and Claude Code who want a local long-term memory engine with no external database.

How it fits with Hermes Agent

Lists Hermes Agent first among its supported agents and includes a Hermes v0.20 and later adaptation, but it is a multi-agent memory engine rather than Hermes-only.

FAQ