Skip to main content
Glama

cory-mem

Python 3.11+ License: MIT MCP Compatible FastAPI

A comprehensive memory system for Claude-based AI projects enabling learning, self-organization, and persistent context across sessions.

Overview

cory-mem provides a personal memory layer for AI assistants, allowing them to remember context, learn from interactions, and maintain persistent knowledge across sessions. It combines short-term session memory with long-term semantic storage, enabling natural context retrieval through hybrid search.

Related MCP server: Recall

Features

  • Short-term (Session) Memory: Captures conversation context with automatic promotion to long-term storage

  • Long-term (Persistent) Memory: Durable storage with version history and conflict detection

  • Semantic Search with FAISS + Keyword Search: Hybrid retrieval combining vector similarity and TF-IDF

  • Pluggable Embedding Providers: Support for local (sentence-transformers), OpenAI, Claude, and Ollama

  • MCP Server Integration: Native support for Claude Code and MCP-compatible clients

  • REST API with FastAPI: Full CRUD operations, search endpoints, and analytics

  • Conflict Detection & Resolution: Automatic detection of duplicates, contradictions, and merge candidates

  • Version History & Backup: Complete audit trail with point-in-time restoration

  • Automated Maintenance Scheduling: Background jobs for sync, pruning, and index optimization

Architecture

+----------------------------------------------------------+
|                    Client Layer                          |
+----------------------------------------------------------+
|  Native Python  |   MCP Server    |     REST API         |
|    Library      |  (Claude Code)  |    (FastAPI)         |
+-----------------+-----------------+----------------------+
                           |
+----------------------------------------------------------+
|                   Core Services                          |
+----------------------------------------------------------+
|  Memory Manager | Search Engine | Scheduler | Conflict   |
|                 | (Hybrid)      |           | Resolver   |
+-----------------+---------------+-----------+------------+
                           |
+----------------------------------------------------------+
|                   Storage Layer                          |
+----------------------------------------------------------+
|  JSON Storage   |  FAISS Index  |  Version History       |
|  (Long-term)    |  (Vectors)    |  (Audit Trail)         |
+-----------------+---------------+------------------------+

Component Diagram

graph TB
    subgraph "Client Interfaces"
        A[Python Library]
        B[MCP Server]
        C[REST API]
    end

    subgraph "Core Services"
        D[Memory Manager]
        E[Search Engine]
        F[Scheduler]
        G[Conflict Resolver]
        H[Lifecycle Tracker]
    end

    subgraph "Embedding Providers"
        I[Local<br/>sentence-transformers]
        J[OpenAI]
        K[Claude]
        L[Ollama]
    end

    subgraph "Storage"
        M[(JSON Files)]
        N[(FAISS Index)]
        O[(Version History)]
    end

    A --> D
    B --> D
    C --> D

    D --> E
    D --> F
    D --> G
    D --> H

    E --> I
    E --> J
    E --> K
    E --> L

    E --> N
    D --> M
    D --> O

Installation

# Clone the repository
git clone https://github.com/yourusername/cory-mem.git
cd cory-mem

# Install with uv
uv pip install -e .

# Install with development dependencies
uv pip install -e ".[dev]"

Using pip

pip install -e .

Dependencies

Core dependencies:

  • pydantic>=2.0 - Data validation

  • fastapi>=0.109 - REST API

  • faiss-cpu - Vector similarity search

  • sentence-transformers - Local embeddings

  • mcp - Model Context Protocol

  • apscheduler>=3.10 - Background scheduling

Quick Start

Using MCP Server with Claude Code

Add to your Claude Code MCP settings (~/.claude/mcp.json):

{
  "mcpServers": {
    "cory-mem": {
      "command": "python",
      "args": ["-m", "cory_mem.mcp"],
      "env": {
        "CORY_MEM_EMBEDDING_PROVIDER": "local"
      }
    }
  }
}

Then in Claude Code, you can use memory tools:

# Store a memory
Use memory_inject to save: "User prefers Python for backend development"

# Retrieve relevant context
Use memory_retrieve with query: "What programming languages does the user prefer?"

Using REST API

Start the API server:

python -m cory_mem.api.main

Or with uvicorn:

uvicorn cory_mem.api.main:app --host 127.0.0.1 --port 8420

API endpoints:

# Create a memory
curl -X POST http://localhost:8420/api/v1/memories \
  -H "Content-Type: application/json" \
  -d '{
    "content": "User works at Anthropic as an engineer",
    "memory_type": "personal",
    "tags": ["employment", "career"]
  }'

# Search memories
curl -X POST http://localhost:8420/api/v1/search \
  -H "Content-Type: application/json" \
  -d '{
    "query": "where does the user work?",
    "limit": 5
  }'

# Health check
curl http://localhost:8420/health

Using Python Library Directly

from cory_mem.core.memory_manager import MemoryManager, MemoryContext
from cory_mem.models.base import MemoryType
from cory_mem.config import get_config

# Initialize
config = get_config()
manager = MemoryManager(config)

# Start a session
session = manager.start_session()

# Add to short-term memory
manager.add_to_session(
    session.session_id,
    content="User asked about Python async patterns",
    category="interaction"
)

# Inject to long-term memory
memory = manager.inject(
    content="User is an experienced Python developer specializing in async programming",
    memory_type=MemoryType.PERSONAL,
    context=MemoryContext(
        source="conversation",
        tags=["python", "skills", "async"],
        confidence=0.9
    )
)

# Search memories
results = manager.search(
    query="What are the user's programming skills?",
    memory_types=[MemoryType.PERSONAL, MemoryType.KNOWLEDGE],
    limit=10
)

# Get context for conversation
context = manager.get_context_for_conversation(
    query="Help me with async Python",
    session_id=session.session_id,
    max_memories=10
)
print(context.to_text())

# Sync session to long-term storage
sync_result = manager.sync_session_to_long_term(session.session_id)

# Get statistics
stats = manager.get_stats()

Memory Types

Personal Memories

Stores information about the user: preferences, relationships, employment history.

from cory_mem.models.personal import PersonalMemory, PersonalCategory

memory = PersonalMemory(
    content="User prefers dark mode and vim keybindings",
    category=PersonalCategory.PREFERENCE,
)

Categories:

  • PREFERENCE - User preferences and settings

  • EMPLOYMENT - Work history and job information

  • RELATIONSHIP - Family, friends, colleagues

  • BACKGROUND - Education, hometown, biography

  • GENERAL - Other personal information

Knowledge Base

Facts, skills, and domain-specific knowledge.

from cory_mem.models.knowledge import KnowledgeMemory, KnowledgeDomain

memory = KnowledgeMemory(
    content="FAISS uses product quantization for efficient similarity search",
    domain=KnowledgeDomain.TECHNOLOGY,
    knowledge_type="fact"
)

Domains:

  • TECHNOLOGY, SCIENCE, BUSINESS, ARTS, HEALTH, EDUCATION, GENERAL

Interactions

Conversation summaries and interaction patterns.

from cory_mem.models.interaction import InteractionMemory, InteractionOutcome

memory = InteractionMemory(
    content="Helped user debug a race condition in their async code",
    outcome=InteractionOutcome.SUCCESSFUL,
    sentiment="positive"
)

Projects

Goals, milestones, and progress tracking.

from cory_mem.models.project import ProjectMemory, ProjectStatus, Milestone

memory = ProjectMemory(
    content="Build a personal memory system for AI",
    status=ProjectStatus.IN_PROGRESS,
    milestones=[
        Milestone(name="Design architecture", status="completed"),
        Milestone(name="Implement storage layer", status="completed"),
        Milestone(name="Add MCP integration", status="in_progress"),
    ]
)

Configuration

Configuration via environment variables (prefix: CORY_MEM_):

Variable

Default

Description

CORY_MEM_MEMORY_BASE_PATH

~/.cory-mem/memory

Base directory for storage

CORY_MEM_EMBEDDING_PROVIDER

local

Embedding provider: local, openai, claude, ollama

CORY_MEM_EMBEDDING_MODEL

all-MiniLM-L6-v2

Model name for embeddings

CORY_MEM_EMBEDDING_DIMENSION

384

Vector dimension size

CORY_MEM_OPENAI_API_KEY

-

OpenAI API key (if using OpenAI provider)

CORY_MEM_ANTHROPIC_API_KEY

-

Anthropic API key (if using Claude provider)

CORY_MEM_OLLAMA_BASE_URL

http://localhost:11434

Ollama server URL

CORY_MEM_SESSION_TTL_HOURS

24

Session expiration time

CORY_MEM_MAX_SESSION_ENTRIES

1000

Max entries per session

CORY_MEM_SEARCH_DEFAULT_LIMIT

10

Default search result count

CORY_MEM_SEARCH_SIMILARITY_THRESHOLD

0.5

Minimum similarity score

CORY_MEM_SYNC_INTERVAL_MINUTES

60

Sync job interval

CORY_MEM_PRUNE_INTERVAL_HOURS

24

Prune job interval

CORY_MEM_MAINTENANCE_DAY

sunday

Weekly maintenance day

CORY_MEM_API_HOST

127.0.0.1

API server host

CORY_MEM_API_PORT

8420

API server port

Or use a .env file:

CORY_MEM_EMBEDDING_PROVIDER=openai
CORY_MEM_OPENAI_API_KEY=sk-...
CORY_MEM_API_PORT=9000

API Reference

Memories API (/api/v1/memories)

Method

Endpoint

Description

POST

/memories

Create a new memory

GET

/memories/{id}

Get memory by ID

PUT

/memories/{id}

Update a memory

DELETE

/memories/{id}

Delete a memory

GET

/memories

List memories with filtering

Search API (/api/v1/search)

Method

Endpoint

Description

POST

/search

Hybrid search (semantic + keyword)

POST

/search/semantic

Semantic-only search

POST

/search/keyword

Keyword-only search

POST

/search/tags

Search by tags

Scheduler API (/api/v1/scheduler)

Method

Endpoint

Description

GET

/scheduler/jobs

List scheduled jobs

POST

/scheduler/jobs/{type}/run

Trigger job manually

GET

/scheduler/history

Get job execution history

Versioning API (/api/v1/versioning)

Method

Endpoint

Description

GET

/versioning/{id}/history

Get version history

POST

/versioning/{id}/restore/{version}

Restore to version

POST

/versioning/backup

Create backup

Analytics API (/api/v1/analytics)

Method

Endpoint

Description

GET

/analytics/stats

Get memory statistics

GET

/analytics/lifecycle

Get lifecycle metrics

Interactive documentation available at /docs (Swagger UI) and /redoc.

MCP Tools

Available tools when using the MCP server:

Tool

Description

memory_inject

Add new information to long-term memory

memory_retrieve

Get relevant context for a query

memory_update

Modify an existing memory

memory_search

Search with full options (semantic + keyword)

memory_delete

Remove a memory (soft or hard delete)

MCP Resources

Resource URI

Description

memory://stats

Memory system statistics

memory://recent

Recently accessed memories

memory://type/{type}

Memories by type

MCP Prompts

Prompt

Description

memory-context

Get relevant memory context for a topic

memory-summary

Get a summary of stored memories

Internal Operations

Memory Lifecycle

sequenceDiagram
    participant C as Client
    participant M as MemoryManager
    participant S as SearchEngine
    participant ST as Storage
    participant I as FAISS Index

    C->>M: inject(content, type)
    M->>M: Validate & create Memory
    M->>ST: Store JSON
    M->>S: Generate embedding
    S->>I: Add to index
    M-->>C: Return memory

    C->>M: search(query)
    M->>S: hybrid_search(query)
    S->>S: Generate query embedding
    S->>I: Vector similarity search
    S->>S: Keyword TF-IDF search
    S->>S: Merge & rank results
    S-->>M: Return results
    M-->>C: Return memories

Conflict Resolution Flow

flowchart TD
    A[New Memory] --> B{Compute Similarity}
    B --> C{Similarity >= 0.95?}
    C -->|Yes| D[DUPLICATE]
    C -->|No| E{Similarity >= 0.85?}
    E -->|Yes| F{Same Category?}
    F -->|Yes| G[CONTRADICTION]
    F -->|No| H{Time Diff > 24h?}
    H -->|Yes| I[OUTDATED]
    H -->|No| J{Similarity >= 0.75?}
    E -->|No| J
    J -->|Yes| K[MERGE_CANDIDATE]
    J -->|No| L[No Conflict]

    D --> M{Confidence >= 0.8?}
    I --> M
    G --> N[Manual Review]
    K --> O{Confidence >= 0.9?}

    M -->|Yes| P[Auto: Keep Newer]
    M -->|No| N
    O -->|Yes| Q[Auto: Merge]
    O -->|No| N

Scheduler Job Flow

sequenceDiagram
    participant S as Scheduler
    participant J as JobRunner
    participant M as MemoryManager
    participant H as JobHistory

    S->>S: Check job schedule
    S->>J: Execute job

    alt SYNC_SHORT_TO_LONG
        J->>M: sync_session_to_long_term()
        M-->>J: SyncResult
    else PRUNE_EXPIRED
        J->>M: cleanup()
        M-->>J: Cleanup stats
    else MAINTENANCE
        J->>M: Merge duplicates
        J->>M: Optimize indexes
    else BACKUP
        J->>M: Create backup
    end

    J->>H: Record result
    H-->>S: Job complete

Development

Running Tests

# Run all tests with coverage
pytest

# Run specific test categories
pytest tests/unit/
pytest tests/integration/
pytest tests/e2e/

# Run with verbose output
pytest -v --cov=src/cory_mem --cov-report=term-missing

Code Quality

# Lint with ruff
ruff check src/ tests/

# Format with ruff
ruff format src/ tests/

# Type checking with mypy
mypy src/cory_mem/

Project Structure

cory-mem/
├── src/cory_mem/
│   ├── api/              # FastAPI REST endpoints
│   │   ├── routers/      # Route handlers
│   │   └── schemas/      # Pydantic request/response models
│   ├── core/             # Core business logic
│   │   ├── memory_manager.py
│   │   ├── short_term.py
│   │   ├── long_term.py
│   │   ├── conflict_resolver.py
│   │   └── lifecycle_tracker.py
│   ├── embeddings/       # Embedding providers
│   │   ├── base.py
│   │   ├── local.py
│   │   ├── openai.py
│   │   └── claude.py
│   ├── mcp/              # MCP server integration
│   │   ├── server.py
│   │   ├── tools.py
│   │   └── resources.py
│   ├── models/           # Data models
│   │   ├── base.py
│   │   ├── personal.py
│   │   ├── knowledge.py
│   │   ├── interaction.py
│   │   └── project.py
│   ├── scheduler/        # Background job scheduling
│   │   ├── jobs.py
│   │   └── runner.py
│   ├── search/           # Hybrid search engine
│   │   ├── engine.py
│   │   └── keyword.py
│   ├── storage/          # Persistence layer
│   │   ├── json_storage.py
│   │   └── faiss_index.py
│   ├── versioning/       # Version control & backup
│   │   ├── history.py
│   │   ├── diff.py
│   │   └── backup.py
│   └── config.py         # Configuration management
├── tests/
│   ├── unit/
│   ├── integration/
│   └── e2e/
├── scripts/
│   └── hooks/            # Claude Code hooks
├── pyproject.toml
└── README.md

License

MIT License - see LICENSE for details.


Built for seamless integration with Claude and the Model Context Protocol ecosystem.

A
license - permissive license
-
quality - not tested
D
maintenance

Maintenance

Maintainers
Response time
Release cycle
Releases (12mo)
Commit activity

Resources

Unclaimed servers have limited discoverability.

Looking for Admin?

If you are the server author, to access and configure the admin panel.

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/darland6/cory-mem'

If you have feedback or need assistance with the MCP directory API, please join our Discord server