Plasmate vs Substrate Browser

In-depth architectural comparison of the Plasmate and Substrate Browser 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 Plasmate when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Plasmate Details

Choose Substrate Browser when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Substrate Browser Details

Feature & Specification Comparison

Specification	Plasmate Finance & Fintech	Substrate Browser Finance & Fintech
Summary	Agent-native headless browser. HTML in, Semantic Object Model out. 10x token compression.	Token-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.
Category & Scope	Finance & Fintech	Finance & Fintech

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": {
    "plasmate": {
      "command": "uvx",
      "args": [
        "plasmate"
      ]
    }
  }
}

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

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