Grok openfda mcp server openfda_count_values
How to: Grok openfda mcp server openfda_count_values
Add openfda mcp server to Grok
-
01
Open .mcp.json (in your project root) and merge this in. Keep any servers already there.
{
"mcpServers": {
"openfda-mcp-server": {
"type": "http",
"url": "https://openfda.caseyjhand.com/mcp"
}
}
}-
02
Save the file and restart Grok.
-
03
Ask for something openfda_count_values does. Grok lists the server's tools on connect and calls openfda_count_values itself — you do not invoke it by name.
-
04
If nothing happens, check the server is running and that openfda mcp server's identifier in your config matches the one above exactly.
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
Set these first
openfda mcp server will not start until these are set, so openfda_count_values never becomes available.
-
OPENFDA_API_KEY -
OPENFDA_MIRROR_ENABLED -
OPENFDA_MIRROR_PATH -
OPENFDA_MIRROR_REFRESH_CRON -
OPENFDA_MIRROR_FALLBACK_LIVE -
OPENFDA_MIRROR_REFRESH_TIMEOUT_MS -
OPENFDA_MIRROR_BASE_URL -
MCP_LOG_LEVEL
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.