Rein
Give Claude Code persistent, cross-validated memory across sessions via a Rust MCP server with graph recall and remote OAuth.
Overview
rein is a plugin marketplace for the Build phase that distributes a cross-validated memory MCP server with knowledge-graph and temporal recall tooling for AI agents.
What is this marketplace?
- Single marketplace plugin bundling the rein memory MCP server (AGPL-3.0-or-later v1.0.1).
- Advertises 40 MCP tools spanning RAG, knowledge-graph storage, adaptive engine, and temporal recall.
- Multi-source cross-validated memory design aimed at reducing hallucinated or stale agent context.
- OAuth-enabled remote MCP path for teams that host memory outside the local machine.
- Tagged for memory, MCP, RAG, knowledge-graph, and adaptive retrieval workflows.
- 1 plugin in the marketplace manifest
- 40 MCP tools advertised in the plugin description
- Marketplace version 1.0.1
Community signal: 8 GitHub stars.
What problem does it solve?
Coding agents forget prior decisions and contradict themselves because session context disappears and no single memory layer validates facts across sources.
Who is it for?
Solo builders running Claude Code on multi-week agent projects who need persistent memory and are comfortable with MCP plus AGPL licensing.
Skip if: Teams that only need ephemeral chat context or want a copy-paste skill without installing an MCP server or considering AGPL obligations.
What do I get? / Deliverables
After you add the marketplace plugin and configure the rein MCP server, your agent can store, graph, and time-aware recall project memory through dozens of dedicated tools.
- One installed rein memory MCP plugin from the lyr1cs/rein marketplace
- MCP tool surface for graph storage, adaptive recall, and multi-source memory validation
- Configured remote or local memory endpoint for ongoing agent sessions
Plugins in this marketplace
1 plugin — install individually after you add the marketplace.
Recommended Marketplaces
Journey fit
Memory MCP servers are installed while wiring the agent stack during product build, before daily ship/operate loops. Agent-tooling is the canonical shelf for MCP servers that extend what the coding agent can remember and retrieve.
How it compares
MCP memory server marketplace bundle, not a lightweight prompt-only skill.
Common Questions / FAQ
Who is Rein for?
Rein is for indie developers and small teams building agent-driven products who want durable, graph-backed memory exposed to Claude Code through MCP.
When should I use Rein?
Use Rein when you are in the build phase wiring agent tooling and need cross-session recall, RAG, and validated memory instead of stuffing everything into the context window.
How do I add Rein to my agent?
Install the lyr1cs/Rein Claude Code marketplace entry, enable the Rein plugin from the marketplace manifest, then register the Rein MCP server in your Claude Code MCP settings per the plugin homepage on GitHub.