What is the key difference between Robrain and Projectmem?

Robrain belongs to the Knowledge & Memory category with local stdio execution, while Projectmem belongs to the Knowledge & Memory category with local stdio execution.

How do I install Robrain or Projectmem in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Robrain and Projectmem free or paid?

Robrain operates under a Freemium model (API Key required). Projectmem operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Robrain lists 6 tools with 2 views and 81 GitHub stars. Projectmem lists 6 tools with 2 views and 538 GitHub stars.

Can I use both Robrain and Projectmem together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Robrain or Projectmem in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Robrain and Projectmem free to use, or do they require API keys?

Robrain is listed under a Freemium model with API Key required . Projectmem operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Robrain and Projectmem at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both adelinamart-robrain and riponcm-projectmem as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Robrain has a Quality Score of 49 /100 ( Fair ) with 2 views, 0 installs, and 81 GitHub stars. Projectmem holds a Quality Score of 49 /100 ( Fair ) with 2 views, 0 installs, and 538 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Robrain vs Projectmem

In-depth architectural comparison of the Robrain and Projectmem 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.

At a Glance & Executive Verdict

Robrain

Knowledge & Memory · Local stdio

Quality: 49/100 (Fair) | Auth: API Key required

Projectmem

Knowledge & Memory · Local stdio

Quality: 49/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Robrain if you need specialized Knowledge & Memory tools running via a local process. Choose Projectmem if your workspace requires Knowledge & Memory integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Robrain when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Freemium).
You have access to required keys: ANTHROPIC_API_KEY, OPENAI_API_KEY, PERCEPTION_API_KEY, POSTGRES_PASSWORD.
Primary tools included: Passive capture of session turns and decisions, Structured rejected[] field for vetoed alternatives, Corpus-wide contradiction and stance drift detection.

Explore Robrain Details

Choose Projectmem when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: Local-first memory stored in .projectmem directory, Typed event storage: issues, attempts, fixes, decisions, notes, Pre-commit git hook warnings for repeated mistakes.

Feature & Specification Comparison

Specification	Robrain adelinamart Knowledge & Memory	Projectmem riponcm Knowledge & Memory
Summary	Self-hosted decision memory for AI coding agents. Passively captures architectural decisions with the alternatives you rejected (structured rejected[]), then warns the agent before it re-proposes a rejected approach. Postgres + pgvector; cross-tool across Claude Code, Cursor, Copilot, and Codex. Install: npx robrain up && npx robrain install.	Local-first memory and judgment layer for AI coding agents. Captures issues, failed attempts, fixes, and decisions in readable Markdown + JSONL, re-injects them into future sessions, and warns at git commit before you repeat a mistake. 14 tools, works with Claude, Cursor, Antigravity, and Codex.
Category & Scope

Tools & Capabilities Breakdown

Robrain Tools (6)

Passive capture of session turns and decisions

Structured rejected[] field for vetoed alternatives

Corpus-wide contradiction and stance drift detection

Postgres + pgvector backend for persistent storage

Cross-tool integration with Claude Code, Cursor, Copilot, Codex CLI

Self-hosted or managed cloud deployment options

Projectmem Tools (6)

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).

Robrain Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "adelinamart-robrain": {
      "command": "npx",
      "args": [
        "-y",
        "robrain"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "YOUR_ANTHROPIC_API_KEY_HERE",
        "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE",
        "PERCEPTION_API_KEY": "YOUR_PERCEPTION_API_KEY_HERE",
        "POSTGRES_PASSWORD": "YOUR_POSTGRES_PASSWORD_HERE"
      }
    }
  }
}

Projectmem Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "riponcm-projectmem": {
      "command": "npx",
      "args": [
        "-y",
        "riponcm-projectmem"
      ]
    }
  }
}

Frequently Asked Questions

Robrain is categorized under Knowledge & Memory and uses a local stdio subprocess. In contrast, Projectmem belongs to Knowledge & Memory using local stdio subprocess. Select Robrain when you need capabilities focused on knowledge & memory and Projectmem when you require tools for knowledge & memory.

More alternatives to Robrain More alternatives to Projectmem Knowledge & Memory category hub