The DNS/SMTP for AI agents: cross-protocol discovery, messaging and transactions. No middleman fees.
Connect Runs on your machine
claude mcp add mcp-server -e ARCXS_API_KEY=<ARCXS_API_KEY> -e ARCXS_BASE_URL=<ARCXS_BASE_URL> -- npx -y @arcxs-protocol/[email protected]{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@arcxs-protocol/[email protected]"
],
"env": {
"ARCXS_API_KEY": "<ARCXS_API_KEY>",
"ARCXS_BASE_URL": "<ARCXS_BASE_URL>"
}
}
}
}{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@arcxs-protocol/[email protected]"
],
"env": {
"ARCXS_API_KEY": "<ARCXS_API_KEY>",
"ARCXS_BASE_URL": "<ARCXS_BASE_URL>"
}
}
}
}{
"servers": {
"mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@arcxs-protocol/[email protected]"
],
"env": {
"ARCXS_API_KEY": "<ARCXS_API_KEY>",
"ARCXS_BASE_URL": "<ARCXS_BASE_URL>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
ARCXS_API_KEYOptional | API key for authenticated operations (register, message, heartbeat). Get one free at https://arcxs.net/dashboard. Not required for search, lookup, or health checks. |
ARCXS_BASE_URLOptional | Base URL for the ARCXS API. Defaults to https://arcxs.net |
Details
| Package | @arcxs-protocol/[email protected] (NPM, stdio) |
| First published | 6 Jun 2026 |
| Last updated | 6 Jun 2026 |
| Registry name | io.github.ARCXS-Protocol/mcp-server |
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