MCP server: 28 tools over 7 x402-paid Japanese data APIs (address, furigana, transit, Diet, holidays, weather, corporate registry & KYB reports). Pay-per-call USDC via x402.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add japan-data-mameta29 --env EVM_PRIVATE_KEY='<EVM_PRIVATE_KEY>' -- npx -y @mameta/japan-data-mcp~/.codex/config.toml
[mcp_servers.japan-data-mameta29]
command = "npx"
args = ["-y", "@mameta/japan-data-mcp"]
env = { EVM_PRIVATE_KEY = "<EVM_PRIVATE_KEY>" }
# codex mcp add japan-data-mameta29 --env EVM_PRIVATE_KEY='<EVM_PRIVATE_KEY>' -- npx -y @mameta/japan-data-mcp~/.cursor/mcp.json
{
"mcpServers": {
"japan-data-mameta29": {
"command": "npx",
"args": [
"-y",
"@mameta/japan-data-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"japan-data-mameta29": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mameta/japan-data-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"japan-data-mameta29": {
"command": "npx",
"args": [
"-y",
"@mameta/japan-data-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"japan-data-mameta29": {
"command": "npx",
"args": [
"-y",
"@mameta/japan-data-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"japan-data-mameta29": {
"command": "npx",
"args": [
"-y",
"@mameta/japan-data-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}Environment variables
EVM_PRIVATE_KEY
Replace the placeholders with your own credentials and keep them out of version control.