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xmszm

xmszm-memory

by xmszm
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JavaScript
Hybrid

memory

Personal MCP memory server. Multi-user, file-backed, cross-platform.

Each user gets an isolated namespace. Memories persist across sessions within the namespace.

Usage

Lifecycle

xmszm-memory has three separate steps. Do not confuse MCP connection with automatic memory loading.

1. Configure MCP
   -> The client can see xmszm-memory tools.

2. First-use initialization
   -> initialize(namespace, profile?) creates boot/personality memories.
   -> boot_instructions(namespace, target?) generates the client rule to install into AGENTS.md, CLAUDE.md, .cursorrules, or global instructions.

3. Normal conversations
   -> The installed client rule makes each new session call initialize(...) and read(..., "system://boot") before answering.
   -> During conversation, the model uses search/read/list to recall memory and create/update/delete to maintain durable memory.

Important: MCP servers cannot force clients to call tools at session start. Automatic memory loading only works after the returned boot_instructions rule is installed in the client or project instructions.

Requirements

  • Node.js >= 18 (if installed via npm)

  • No installation needed if using npx

stdio mode (for MCP clients)

npx -y @xmszm/memory

SSE mode (HTTP server, background service)

npx -y @xmszm/memory sse
npx -y @xmszm/memory sse 3000

Hermes Configuration

{
  "mcpServers": {
    "xmszm-memory": {
      "command": "npx",
      "args": ["-y", "@xmszm/memory"]
    }
  }
}

Claude Code Configuration

User-scope example:

claude mcp add -s user xmszm-memory -- npx -y @xmszm/memory

JSON example:

{
  "mcpServers": {
    "xmszm-memory": {
      "command": "npx",
      "args": ["-y", "@xmszm/memory"]
    }
  }
}

Cursor / Windsurf / Any MCP Client

Most MCP-compatible clients accept the same format:

{
  "mcpServers": {
    "xmszm-memory": {
      "command": "npx",
      "args": ["-y", "@xmszm/memory"]
    }
  }
}

Related MCP server: GroundMemory

Memory Model

Memories are URI-only records. There is no key field and no key-based API.

interface Memory {
  uri: string;
  content: string;
  disclosure: string;
  priority: 0 | 1 | 2; // default 2
  tags: string[];      // default []
  source: string;      // default "assistant_inferred"
  createdAt: string;
  updatedAt: string;
  deletedAt?: string;  // set by delete()
}

Deleted memories are soft-deleted with deletedAt and are excluded from read, search, and list by default.

Tools

Tool

Description

initialize(namespace, profile?)

Idempotently create v2.1 boot/personality memories. profile defaults to assistant; accepted values are assistant and blank. Active existing memories are skipped, never overwritten.

boot_instructions(namespace, target?)

Generate copy-paste startup instructions for a client/global/project rule so future sessions call initialize and read(system://boot) before answering. Targets: generic, project, claude-code, codex, cursor, windsurf.

create(namespace, uri, content, disclosure, priority?, tags?, source?)

Create a new memory. Refuses overwrite if uri already exists; use update to modify.

update(namespace, uri, fields)

Update an existing active memory by exact URI without changing createdAt. fields can include content, disclosure, priority, tags, or source.

read(namespace, uri)

Read one active memory by exact URI. Special reads: system://boot and system://diagnostic/identity.

search(namespace, query)

Main entry when URI is unknown. Searches uri, content, disclosure, tags, and source.

list(namespace, prefix?)

Browse active memories, optionally filtered by URI prefix.

delete(namespace, uri)

Soft-delete one active memory by exact URI by setting deletedAt.

list_namespaces()

List all namespaces only; it does not return memories.

First-use Initialization

After MCP is configured, ask the client once to initialize the namespace and generate its startup rule.

Recommended first prompt:

Use xmszm-memory. Call initialize("admin", "assistant"), then read("admin", "system://boot"), then call boot_instructions("admin", "<target>") and install the returned rule into this client's global or project instructions.

Use target claude-code, codex, cursor, windsurf, project, or generic.

Boot Flow

At the start of a new session, clients should initialize the namespace once if it may be empty, then read the boot context before answering:

initialize(namespace, "assistant")  # or initialize(namespace, "blank")
read(namespace, "system://boot")

initialize is safe to call repeatedly. It reports created and skipped_active_existing URIs and never overwrites an active memory.

Profiles:

Profile

Behavior

assistant

Creates default identity, verification, no-fake-execution, conflict-resolution, user-relationship, boundary, reality, and coding-workflow memories.

blank

Creates only minimal structural placeholders such as identity://default/self and boundaries; it does not assume user-specific preferences.

Special reads:

URI

Behavior

system://boot

Returns active identity://default/* memories plus all active priority=0 memories, de-duplicated by URI and sorted by URI. Includes a short routing guide.

system://diagnostic/identity

Reports whether core identity URIs are present, missing, active count, priority-0 count, and warnings for missing boundaries, verification, or no-fake-execution memories.

Recommended memory flow:

Configure MCP once -> client can see xmszm-memory tools
First use once -> initialize(namespace, profile?) -> read(namespace, "system://boot") -> boot_instructions(namespace, target?) -> install returned rule
Every new session -> installed rule triggers initialize(namespace, profile?) -> read(namespace, "system://boot")
Unknown URI -> search(namespace, query) -> read/update/delete(namespace, exactUri)
Browse URI prefix -> list(namespace, prefix)
Create new memory -> create(namespace, uri, ...)
Modify existing memory -> update(namespace, uri, fields)

Examples:

initialize("admin")
initialize("admin", "blank")
read("admin", "system://boot")
read("admin", "system://diagnostic/identity")
boot_instructions("admin", "generic")
boot_instructions("admin", "codex")

To make memory load automatically, run boot_instructions(namespace, target?) once and copy the returned rule into the client global instructions or project rule file. Without that client-side rule, the MCP server is available but the model may not call it until asked.

Data

Stored in ~/.xmszm-memory/ as one JSON file per namespace.

# View all your memories
cat ~/.xmszm-memory/admin.json

License

MIT

Built from the design philosophy of Nocturne Memory by NeuronActivation.

This server cannot be installed

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