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x402card

https://api.x402card.org/mcp

answers a handshake

Registry name: org.x402card/freeland-esim
Reports itself as: x402card 0.1.5
Protocol version: 2025-06-18
Transport: streamable-http
HTTP status: 200
Latency: 671 ms
Tools: 12
Checked: 2026-09-06T08:28:55Z

Tools it reports

x402card.get_agent_contract
x402card.get_wallet_requirements
x402card.get_config
x402card.get_esim_contract
x402card.get_card_contract
x402card.get_card_topup_contract
x402card.list_esim_plans
x402card.get_esim_readiness
x402card.get_readiness
x402card.get_openapi
x402card.get_install_command
x402card.get_payable_url

Check it yourself

curl -s -X POST https://api.x402card.org/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"you","version":"0"}}}'