Verified Repo Memory MCP v0.1.0

Stale-proof repository memory with citations + just-in-time verification + TTL (repo-scoped).

An MCP server providing "safe memory" for AI coding agents. Memories are scoped per repository, backed by code citations, and verified just-in-time so an agent never receives stale information when the underlying code has changed.

Quickstart

Run via npx:

npx -y vrm-local --repo /path/to/repo

Tools

• vrm_store: Store a new memory with file citations.

• vrm_search: Search for candidate memories by keywords.

• vrm_retrieve: JIT-verify candidates and return only valid memories. (Main tool for agents)

• vrm_list: List memories by status (valid, stale, missing).

• vrm_forget: Manually delete a memory.

Example I/O

Store: Input:

{
  "subject": "API version sync",
  "fact": "When changing API version, update client/server/docs together.",
  "citations": [{ "path": "src/api.ts", "startLine": 10, "endLine": 15 }]
}

Output:

{
  "stored": true,
  "memoryId": "uuid-...",
  "expiresAt": "2026-03-21T00:00:00Z"
}

Retrieve: Input:

{ "query": "API version" }

Output:

{
  "query": "API version",
  "valid": [ ... ],
  "stats": { "verified": 1, "validCount": 1 }
}

How it works

graph TD
    A[Agent] -->|Store Fact + Citation| B(Verified Repo Memory)
    B --> C{Save to Disk}
    C -->|Hash Code Snippet| D[(memories.json)]
    
    A -->|Retrieve Fact| B
    B --> E{JIT Verification}
    E -->|Check File Hash| F{Unchanged or Relocated?}
    F -->|Yes| G[Return VALID Memory]
    F -->|No| H[Return STALE/MISSING]

1. Citations: Every fact is linked to a file path and a line range. The exact code snippet is hashed and saved.

2. JIT Verification: Before returning a memory to the agent in vrm_retrieve, the server checks the physical file. If the snippet has moved, it relocates the citation. If it has been changed or deleted, the memory is marked STALE/MISSING and omitted from the results.

3. TTL (Time-To-Live): Memories expire automatically (default 28 days) unless they are successfully retrieved and utilized, which extends their life.

Data location

Data is strictly repo-scoped and saved in: <repoRoot>/.verified-repo-memory/

This includes memories.json and a fingerprint/metadata file to prevent accidental cross-repo pollution. Add this directory to your .gitignore.

Security

• No Network Transmissions: This is a stdio local-only server without HTTP calls.

• Path Security: Disallows any path traversal (../) out of the repository root, as well as accessing .git/ or .verified-repo-memory/.

• No Stdout Pollution: Strict logging only to stderr.

• Secret Scan: Built-in heuristic secret scanning to reject memories that look like API keys/private keys (can be disabled via --no-secret-scan).

Usage with Claude

Claude Desktop

To add this server to the Claude Desktop app, edit your configuration file:

• On macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• On Windows: %APPDATA%\Claude\claude_desktop_config.json

Add the following configuration:

{
  "mcpServers": {
    "verified-repo-memory": {
      "command": "npx",
      "args": [
        "-y",
        "vrm-local",
        "--repo",
        "/absolute/path/to/your/repo"
      ]
    }
  }
}

Claude Code

To add this server to Claude Code using stdio transport:

claude mcp add mcp-verified-repo-memory --transport stdio -- npx -y vrm-local

Note for Windows users: You may need to prepend cmd /c to the command:

claude mcp add mcp-verified-repo-memory --transport stdio -- cmd /c npx -y vrm-local

Publishing to MCP Registry

To publish this server to the official registry:

1. Initialize publisher: npx @modelcontextprotocol/publisher init

2. Login: npx @modelcontextprotocol/publisher login github

3. Publish: npx @modelcontextprotocol/publisher publish

Note: Once published, the version in server.json is immutable and cannot be changed for that release.