Developer Tools

x402card.org

Provides machine-readable contracts and listings for x402 card and Freeland eSIM plans, including wallet requirements and pricing.

x402 supported1 endpoint10 known toolsFirst detected August 18, 2026Last detected August 18, 2026

ENDPOINT 1

https://api.x402card.org/mcp

No auth detected

MCP server metadata

Name: x402card
Version: 0.1.3

Capabilities

tools

Server instructions

Use tools/list and tools/call to discover x402card virtual-card and Freeland eSIM contracts. This remote MCP cannot sign or pay.

Known tools 10

x402card.get_agent_contract

Return the complete machine-readable x402card API/agent contract.

Inferred read-only

x402card.get_wallet_requirements

Return signer-agnostic owner authentication, x402 payer, credential, and adapter requirements.

Inferred read-only

x402card.get_config

Return public runtime config: network, USDC asset, receive address, fees, limits, and treasury mode.

Inferred read-only

x402card.get_esim_contract

Return the Freeland eSIM catalog, direct x402 purchase, payer-ownership, fulfillment, and privacy contract.

Potential side effects

x402card.list_esim_plans

List live Freeland prepaid travel eSIM plans and current Base USDC prices.

Inferred read-only

x402card.get_esim_readiness

Return eSIM-only readiness without unrelated card-provider or treasury gates.

Inferred read-only

x402card.get_readiness

Return sanitized public readiness.

Inferred read-only

x402card.get_openapi

Return the OpenAPI 3.

Inferred read-only

x402card.get_install_command

Return the shell install command and CLI discovery commands.

Potential side effects

x402card.get_payable_url

Build the public payable x402 URL for an existing order id.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.x402card]
url = "https://api.x402card.org/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "x402card": {
      "type": "http",
      "url": "https://api.x402card.org/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: x402card
Remote MCP URL: https://api.x402card.org/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "x402card": {
      "url": "https://api.x402card.org/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "x402card": {
      "type": "http",
      "url": "https://api.x402card.org/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "x402card",
  "transport": "streamable-http",
  "url": "https://api.x402card.org/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.