Oyster MCP by usefulapi for Grok
io.usefulapi/oyster
Read team, time off, expenses and invoices; approve or decline time off and expenses in Oyster.
client:Grok
transport:streamable-http
tools:20
Install Oyster MCP by usefulapi in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"oyster": {
"type": "http",
"url": "https://oyster.usefulapi.io/mcp"
}
}
}Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs
What Grok can do once it is connected
- oyster_get_company
- oyster_list_team_members
- oyster_get_team_member
- oyster_list_departments
- oyster_list_time_off_requests
- oyster_get_time_off_request
- oyster_list_time_off_balances
- oyster_list_public_holidays
- oyster_list_expenses
- oyster_get_expense
- oyster_list_contract_changes
- oyster_get_contract_change
- oyster_list_invoices
- oyster_get_invoice
- oyster_list_time_sheets
- oyster_get_time_sheet
- oyster_approve_time_off_request
- oyster_reject_time_off_request
- oyster_approve_expense
- oyster_decline_expense