Fillo vs Ouroboros

In-depth architectural comparison of the Fillo and Ouroboros 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 Fillo when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Form provisioning, Form scaffolding, Form publishing.

Explore Fillo Details

Choose Ouroboros when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Specification-first coding workflow, MCP interview tool, Seed and Ledger primitives.

Explore Ouroboros Details

Feature & Specification Comparison

Specification	Fillo Developer Tools	Ouroboros Developer Tools
Summary
Category & Scope	Developer Tools	Developer Tools
Quality signal

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": {
    "fillo": {
      "command": "npx",
      "args": [
        "-y",
        "@usefillo/cli@latest"
      ]
    }
  }
}

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

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