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Engram

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Engram

Memory infrastructure for AI agents. Store every conversation verbatim. Search by meaning.

Website Docs License

Engram is an MCP-native memory server that stores complete, uncompressed conversation transcripts and makes them searchable via semantic search. Connect any MCP-compatible client — Claude Desktop, Claude Code, Cursor, Windsurf, Zed — and your agent remembers everything across sessions.

Quick start

Claude Code

/plugin marketplace add get-engram/engram
/plugin install engram@engram

Restart Claude Code and approve access in the browser. There is no API key to copy and no config file to edit — the server implements the MCP authorization flow (RFC 9728 / 8414 / 7591, PKCE), so the client discovers it, registers itself, and signs you in. A free account is created as part of signing in.

The plugin also ships a skill that tells Claude when to search memory and what is worth saving, so context accumulates without being asked.

Any other MCP client

Point it at the remote server and let OAuth handle access:

{
  "mcpServers": {
    "engram": {
      "type": "http",
      "url": "https://mcp.getengram.app/mcp"
    }
  }
}

For a client that only speaks stdio, bridge to the remote server with mcp-remote — it drives the same browser OAuth flow, so there is still no key to copy:

{
  "mcpServers": {
    "engram": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.getengram.app/mcp"]
    }
  }
}

(An older version of this README suggested npx @getengram/cli mcp; the CLI has no such command and that configuration never worked.)

Related MCP server: Kirok

How it works

  • Verbatim storage — every message stored exactly as sent, no summarization or compression

  • Semantic search — find relevant context by meaning using bge-base-en-v1.5 embeddings

  • MCP-native — speaks the Model Context Protocol natively, works with any compatible client

  • Multi-tenant — per-organization isolation, team seats, and API key management

Architecture

Runs entirely on Cloudflare's developer platform:

  • Workers — Hono.js API and MCP server

  • D1 — SQLite at the edge for messages and metadata

  • Vectorize — semantic search index

  • Workers AI — embedding generation

Read the full architecture deep-dive.

MCP tools

Engram exposes 6 tools via MCP:

Tool

Description

create_conversation

Start a new conversation with optional title, tags, metadata

append_messages

Add messages to an existing conversation

search

Semantic search across all conversations

get_conversation

Retrieve a conversation with its messages

list_conversations

List conversations with filtering and pagination

delete_conversation

Remove a conversation and its data

See the API reference for full parameters and examples.

Packages

Package

Description

apps/mcp-server

Cloudflare Worker — MCP server and REST API

apps/cli

CLI and MCP bridge (@getengram/cli)

packages/sdk

TypeScript SDK (@getengram/sdk)

packages/db

Database queries and migrations

packages/shared

Shared constants, types, and utilities

Integration guides

Pricing

Plan

Price

Messages/month

Free

$0

1,000

Pro

$9/mo

100,000

Team

$27/seat/mo

500,000

Enterprise

Custom

Unlimited

View pricing

Links

License

Business Source License 1.1 — see LICENSE for details.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityActive
ResponsivenessUnresponsive

Resources

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