Astrocal is answering right now. Last checked 8 min ago. 82 installs a week from npm. Last commit 12 Aug 2026.
AI-native scheduling: check availability, book meetings, cancel and reschedule via MCP
Today is the operative word: we check Astrocal every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.
claude mcp add mcp-server --transport http https://api.astrocal.dev/mcp
{
"mcpServers": {
"mcp-server": {
"url": "https://api.astrocal.dev/mcp"
}
}
}
[mcp_servers.mcp-server]
url = "https://api.astrocal.dev/mcp"
{
"mcpServers": {
"mcp-server": {
"url": "https://api.astrocal.dev/mcp"
}
}
}
{
"mcpServers": {
"mcp-server": {
"url": "https://api.astrocal.dev/mcp"
}
}
}
This one needs environment variables set before it will start:
ASTROCAL_API_KEY (Your Astrocal API key (create one at https://astrocal.dev/dashboard/connect)), ASTROCAL_API_URL (Custom API base URL (defaults to https://api.astrocal.dev)), ASTROCAL_DEFAULT_EVENT_TYPE_ID (Default event type ID when not specified in tool calls).
The author declared them in the registry entry; get the values from the project itself.
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.
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://api.astrocal.dev/mcp | streamable-http | sign-in | 173 ms | 8 min ago |
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Answers built from our own checks of this server.