eCFR.io Federal Regulations MCP Server
by lrehmannio.ecfr/ecfrv1.0.0
Search and read US federal regulations with legal and inline citations linking to ecfr.io.
context tax
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security
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cold start
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freshness
Active10d ago
Install eCFR.io Federal Regulations MCP server
Install in Claude Code
claude mcp add --transport http ecfr-lrehmann https://ecfr.io/mcpInstall in Cursor
{
"mcpServers": {
"ecfr-lrehmann": {
"url": "https://ecfr.io/mcp"
}
}
}Install in Claude Desktop
{
"mcpServers": {
"ecfr-lrehmann": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://ecfr.io/mcp"
]
}
}
}Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.
Install in VS Code
{
"servers": {
"ecfr-lrehmann": {
"type": "http",
"url": "https://ecfr.io/mcp"
}
}
}Install in Windsurf
{
"mcpServers": {
"ecfr-lrehmann": {
"serverUrl": "https://ecfr.io/mcp"
}
}
}Remote endpoints
- streamable-http
https://ecfr.io/mcp
Freshness
Active — last maintenance signal 10d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-09-30 · 10d ago · GitHub
Latest release
2026-09-30 · 10d ago · GitHub · v1.0.0
Package published
no data · npm/PyPI
Registry entry updated
2026-09-30 · 10d ago · official registry · v1.0.0
FAQ
›How do I install the eCFR.io Federal Regulations MCP server in Claude Code?
Run: claude mcp add --transport http ecfr-lrehmann https://ecfr.io/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does eCFR.io Federal Regulations require an API key?
No required environment variables are declared in its published metadata.
›Can I use eCFR.io Federal Regulations as a remote (hosted) MCP server?
Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.
›Is eCFR.io Federal Regulations in the official MCP registry?
Yes, as io.ecfr/ecfr.