# memory-arbiter-mcp

A local SQLite MCP server for agent memory, traceable facts, version history, and conflict notices. Use it when memory must stay on the machine.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed · ★ 10
- Author: billy12151
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/billy12151/memory-arbiter-mcp
- Updated: 2026-10-21
- HTML: https://affpapa.org/en/nevibecode/mcp/memory-arbiter-mcp

## What it does

memory-arbiter-mcp gives coding agents a local fact store over MCP. It keeps the original text, provenance fields, timestamps, and an append-only edit history. Full-text search and vector indexes support recall, while its four product tools expose memory operations to the client.

Embeddings run through a local GGUF model. An optional mDeBERTa checkpoint can act as a local CPU conflict judge; it reports competing facts without editing them or selecting a winner. The vector setup uses `memory-arbiter-mcp[vec,semantic-local]`, followed by `mema setup --install` and `mema doctor`.

The server needs explicit `client` and `agent_id` values in its configuration or launch environment. It refuses to start when either identity is blank, so this setting belongs in the setup checklist.

## Install

### Claude Code (native platform)

**Install**
- The MCP registry has no launch command for it: see the repository README

## When to use it
- store agent facts in a local SQLite database
- retrieve prior context with text and vector search
- keep provenance and revisions for each memory
- record conflicts between competing facts
- protect user-confirmed memories from silent edits

## Example prompts
- Remember this project fact and attach its source details.
- Find memories related to this task and show the evidence behind the answer.
- Check these new facts against stored memories for conflicts.

## Similar
- [Mneme Memory](https://affpapa.org/en/nevibecode/mcp/mneme-memory.md) — MCP server · ★ 182
- [lean-memory](https://affpapa.org/en/nevibecode/mcp/lean-memory.md) — MCP server · ★ 43
- [LLMSlim memory](https://affpapa.org/en/nevibecode/mcp/llmslim-memory.md) — MCP server · ★ 22
- [genesys-memory](https://affpapa.org/en/nevibecode/mcp/genesys-memory.md) — MCP server · ★ 31
- [ai-memory](https://affpapa.org/en/nevibecode/mcp/ai-memory.md) — MCP server · ★ 55
- [State Memory MCP](https://affpapa.org/en/nevibecode/mcp/state-memory-mcp.md) — MCP server · ★ 39

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md