Arca is answering right now. Last checked 3 min ago.
Arca is a private data vault where your AI stores your structured data, semantic memory and skills.
Arca does not always answer
Over the last week it answered 97.7% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
claude mcp add arca-mcp-server --transport http https://mcp.arca.build{
"mcpServers": {
"arca-mcp-server": {
"url": "https://mcp.arca.build"
}
}
}[mcp_servers.arca-mcp-server]
url = "https://mcp.arca.build"{
"mcpServers": {
"arca-mcp-server": {
"url": "https://mcp.arca.build"
}
}
}{
"mcpServers": {
"arca-mcp-server": {
"url": "https://mcp.arca.build"
}
}
}This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.arca.build | sse | sign-in | 339 ms | 3 min ago |
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Arca — questions
Answers built from our own checks of this server.