@retaindb/mcp-server

Context, memory, and grounded retrieval for coding agents — works with Claude Code, Claude Desktop, Cursor, VS Code, Windsurf, Cline, Continue, and any MCP-compatible client.

Install

npm i -g @retaindb/mcp-server

Setup

export RETAINDB_API_KEY="rdb_..."

Project defaults automatically — no RETAINDB_PROJECT needed unless you want a specific one.

Claude Code

{
  "mcpServers": {
    "retaindb": {
      "command": "retaindb-mcp",
      "env": { "RETAINDB_API_KEY": "rdb_..." }
    }
  }
}

Claude Desktop

Same config, added to ~/Library/Application Support/Claude/claude_desktop_config.json.

Tools

| Tool | Purpose | |------|---------| | context | Start here. Retrieves memories, indexed sources, and local codebase in one call. Pass messages to auto-store the conversation so the next session continues where this one left off. | | remember | Store an explicit fact, preference, or instruction. | | forget | Delete a memory by ID. | | compress | Store old conversation turns as memories, return a trimmed message array when context window fills up. | | index | Connect a source: github · web · pdf · local · slack · video | | search | Semantic search over indexed sources + local codebase. | | grep | Regex/text search local files. | | read | Read a local file with optional line range. |

Automatic memory across sessions

Session 1: context(query, session_id="run-1", messages=[...])
  → ingests conversation in background

Session 2: context(query, session_id="run-2")
  → returns memories from session 1 — agent picks up where it left off

No configuration. No manual remember calls for conversation history. It just works.

Connectors

| Type | Required params | |------|----------------| | github | owner, repo | | web | url | | pdf | url or path | | local | path | | slack | channel_ids, token | | video | url |