Koskamo

YieldAgentX402 MCP

A policy-gated MCP server for agent workflows that provides 18 tools for discovery, secure execution, x402 payment settlement, and receipt verification across 18 chains without taking custody of user funds.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

YieldAgentX402 MCP logo, by YieldAgentX402Community listingLocal stdioSource reviewed; not executedPublished by YieldAgentX402
You need:Request a capped test key at /apply
Vendor documentation

What you can do with it

  • Discover available tools and capabilities via yax_get_capabilities
  • Execute governed workflows with policy checks and approval gates
  • Settle payments using the x402 protocol
  • Verify execution receipts and TEE evidence

Source and maintenance

Community listingRegistry 1.0.4
mcp-registry: io.github.Fabio662/yieldagentx402@1.0.4Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

agentx402-mcp-server 1.0.4

npm
agentx402-mcp-server package definition
{
  "version": "1.0.4",
  "transport": "stdio",
  "identifier": "agentx402-mcp-server",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "YAX_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "YieldAgentX402 API key from https://yieldagentx402.app/apply"
    },
    {
      "name": "YAX_AGENT_ID",
      "format": "string",
      "isRequired": true,
      "description": "Your agent ID from the dashboard."
    },
    {
      "name": "YAX_MCP_ENDPOINT",
      "format": "string",
      "description": "Optional full MCP endpoint override (default: https://api.yieldagentx402.app/mcp)."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "yieldagentx402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agentx402-mcp-server@1.0.4"
      ],
      "env": {
        "YAX_API_KEY": "<YOUR_YAX_API_KEY>",
        "YAX_AGENT_ID": "<YOUR_YAX_AGENT_ID>",
        "YAX_MCP_ENDPOINT": "<YOUR_YAX_MCP_ENDPOINT>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "yieldagentx402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agentx402-mcp-server@1.0.4"
      ],
      "env": {
        "YAX_API_KEY": "<YOUR_YAX_API_KEY>",
        "YAX_AGENT_ID": "<YOUR_YAX_AGENT_ID>",
        "YAX_MCP_ENDPOINT": "<YOUR_YAX_MCP_ENDPOINT>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "yieldagentx402-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "agentx402-mcp-server@1.0.4"
      ],
      "env": {
        "YAX_API_KEY": "<YOUR_YAX_API_KEY>",
        "YAX_AGENT_ID": "<YOUR_YAX_AGENT_ID>",
        "YAX_MCP_ENDPOINT": "<YOUR_YAX_MCP_ENDPOINT>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "yieldagentx402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agentx402-mcp-server@1.0.4"
      ],
      "env": {
        "YAX_API_KEY": "<YOUR_YAX_API_KEY>",
        "YAX_AGENT_ID": "<YOUR_YAX_AGENT_ID>",
        "YAX_MCP_ENDPOINT": "<YOUR_YAX_MCP_ENDPOINT>"
      }
    }
  }
}

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