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x402card MCP server

Which MCP servers are x402card's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-26

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Whose server it is
  • Registry nameorg.x402card/freeland-esimverified in the MCP registry

The registry name sits under x402card.org. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-26
  • Stateanswerschecked 2026-10-26
  • Tools12
  • Server calls itselfx402card
  • Server version0.1.5
  • Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 499 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.
  • Checked on 1 of the 7 days it takes to judge reliability.

Once connected

  • Parameters are untyped or undescribed in 3 of 12 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-10-26
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
  • Answeredmeasuring1 of the 7 daily checks it takes to print a share
  • Median first answer555 ms
  • Space in an agent's context≈ 709 tokensthe definitions of all its tools (12), which an agent carries on every turn
  • Tool definitionsB · 79 of 100
  • Typed results0 of 12 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 3 of 12
  • Not saying whether it only reads or can destroy: 12 of 12

What an agent can do with it

  • cannot · issue a wallet-owned virtual card paid in USDC
  • not sure · buy a travel eSIM and receive its QR code privately
  • not sure · have software agents purchase eSIMs over x402

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers12 tools · read 2026-10-26
  • x402card.get_agent_contract

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

  • x402card.get_wallet_requirements

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

  • x402card.get_config

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

  • x402card.get_esim_contract

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

  • x402card.get_card_contract

    Return the virtual-card direct x402 purchase, payer-ownership, issuance, economics, and credential-security contract.

  • x402card.get_card_topup_contract

    Return the separate direct x402 card top-up, active-card ownership, amount, fee, replay, and asynchronous funding contract.

  • x402card.list_esim_plans

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

  • x402card.get_esim_readiness

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

  • x402card.get_readiness

    Return sanitized public readiness. Deep provider balances and BIN internals are admin-only.

  • x402card.get_openapi

    Return the OpenAPI 3.1 document for direct HTTP API usage.

  • x402card.get_install_command

    Return the shell install command and CLI discovery commands.

  • x402card.get_payable_url

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

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Add it

Claude Code, in a terminal

claude mcp add --transport http x402card https://api.x402card.org/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://api.x402card.org/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.