New Relic MCP Server

Instructions

Implementation Reference

• newrelic_mcp/server.py:364-374 (handler)

  The main MCP tool handler function for 'query_nrql'. It validates client initialization, executes the NRQL query via the NewRelicClient, formats the result as JSON, and handles errors.

  @mcp.tool()
  async def query_nrql(account_id: str, nrql: str) -> str:
      """Execute an NRQL query"""
      if not client:
          return json.dumps({"error": "New Relic client not initialized"})
  
      try:
          result = await client.query_nrql(account_id, nrql)
          return json.dumps(result, indent=2)
      except Exception as e:
          return json.dumps({"error": str(e)}, indent=2)

• newrelic_mcp/server.py:167-183 (helper)

  Core helper method in NewRelicClient that executes the NRQL query using NerdGraph GraphQL API. Constructs the GraphQL query and variables, then calls nerdgraph_query.

  async def query_nrql(self, account_id: str, nrql: str) -> Dict[str, Any]:
      """Execute an NRQL query"""
      query = """
      query($accountId: Int!, $nrql: Nrql!) {
          actor {
              account(id: $accountId) {
                  nrql(query: $nrql) {
                      results
                  }
              }
          }
      }
      """
  
      variables = {"accountId": int(account_id), "nrql": nrql}
  
      return await self.nerdgraph_query(query, variables)