Agent Signal vs Returncheck

In-depth architectural comparison of the Agent Signal and Returncheck 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 Agent Signal 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).

Explore Agent Signal Details

Choose Returncheck when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Returncheck Details

Feature & Specification Comparison

Specification	Agent Signal Developer Tools	Returncheck Developer Tools
Summary	Collective intelligence for AI shopping agents — product intel, deals, and more	Verified return-policy answers for AI shopping agents: can this product actually be returned?
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": {
    "agent-signal": {
      "command": "npx",
      "args": [
        "-y",
        "agent-signal"
      ]
    }
  }
}

{
  "mcpServers": {
    "returncheck": {
      "url": "https://returncheck.m-angelmartinez-fer.workers.dev/mcp"
    }
  }
}

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