Look up countries, timezones, periodic table elements, physical constants, units, HTTP status codes, and MIME types via MCP. STDIO or Streamable HTTP.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add reference-data -- npx -y @cyanheads/reference-data-mcp-server~/.codex/config.toml
[mcp_servers.reference-data]
command = "npx"
args = ["-y", "@cyanheads/reference-data-mcp-server"]
# codex mcp add reference-data -- npx -y @cyanheads/reference-data-mcp-server~/.cursor/mcp.json
{
"mcpServers": {
"reference-data": {
"command": "npx",
"args": [
"-y",
"@cyanheads/reference-data-mcp-server"
]
}
}
}.vscode/mcp.json
{
"servers": {
"reference-data": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@cyanheads/reference-data-mcp-server"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"reference-data": {
"command": "npx",
"args": [
"-y",
"@cyanheads/reference-data-mcp-server"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"reference-data": {
"command": "npx",
"args": [
"-y",
"@cyanheads/reference-data-mcp-server"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"reference-data": {
"command": "npx",
"args": [
"-y",
"@cyanheads/reference-data-mcp-server"
]
}
}
}Remote
claude mcp add --transport http reference-data https://reference-data.caseyjhand.com/mcp~/.codex/config.toml
[mcp_servers.reference-data]
url = "https://reference-data.caseyjhand.com/mcp"
# codex mcp add reference-data --url https://reference-data.caseyjhand.com/mcp~/.cursor/mcp.json
{
"mcpServers": {
"reference-data": {
"url": "https://reference-data.caseyjhand.com/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"reference-data": {
"type": "http",
"url": "https://reference-data.caseyjhand.com/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"reference-data": {
"httpUrl": "https://reference-data.caseyjhand.com/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"reference-data": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://reference-data.caseyjhand.com/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"reference-data": {
"url": "https://reference-data.caseyjhand.com/mcp"
}
}
}