Penfield MCP vs Statelessagent

In-depth architectural comparison of the Penfield MCP and Statelessagent MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Penfield MCP when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: OAuth 2.0 (Free / Open Source).
• Primary tools included: Persistent memory across sessions, Hybrid BM25, vector, and graph search, Knowledge graph with 24 relationship types.

Explore Penfield MCP Details

Choose Statelessagent when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• Primary tools included: Provenance tracking and stale knowledge detection, Dual-layer memory with atomic fact extraction, 19 MCP tools for session handoffs, decisions, and search.

Feature & Specification Comparison

Specification	Penfield MCP penfieldlabs Knowledge & Memory	Statelessagent sgx-labs Knowledge & Memory
Summary	Penfield: persistent memory with hybrid search (BM25 + vector + graph), 24 relationship types for knowledge graphs, context checkpoints for cognitive handoff, artifact storage, and personality system. Works across Claude, Cursor, Windsurf, and any MCP client.	Memory with provenance tracking — records where agent knowledge originated and detects when sources change. 17 MCP tools for session handoffs, decisions, semantic search, and knowledge graph. Works across Claude Code, Cursor, Windsurf, Codex CLI, and Gemini CLI. Single Go binary, SQLite + vector search, fully local.
Category & Scope

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "penfieldlabs-penfield-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote"
      ]
    }
  }
}

{
  "mcpServers": {
    "sgx-labs-statelessagent": {
      "command": "npx",
      "args": [
        "-y",
        "same@latest"
      ]
    }
  }
}

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