diff --git a/api/go.mod b/api/go.mod
index d4b9f33c1..b70d98464 100644
--- a/api/go.mod
+++ b/api/go.mod
@@ -6,10 +6,14 @@ require (
 	github.com/antoniodipinto/ikisocket v0.0.0-20210417133349-f1502512d69a
 	github.com/djherbis/atime v1.0.0
 	github.com/fasthttp/websocket v1.4.3-beta.1 // indirect
+	github.com/go-playground/locales v0.13.0 // indirect
+	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/go-playground/validator/v10 v10.5.0
 	github.com/gofiber/fiber/v2 v2.8.0
 	github.com/google/gopacket v1.1.19
 	github.com/google/martian v2.1.0+incompatible
 	github.com/gorilla/websocket v1.4.2
+	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/orcaman/concurrent-map v0.0.0-20210106121528-16402b402231
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	go.mongodb.org/mongo-driver v1.5.1
diff --git a/api/go.sum b/api/go.sum
index c208c6d23..d1f36c1ee 100644
--- a/api/go.sum
+++ b/api/go.sum
@@ -13,6 +13,14 @@ github.com/djherbis/atime v1.0.0/go.mod h1:5W+KBIuTwVGcqjIfaTwt+KSYX1o6uep8dteve
 github.com/fasthttp/websocket v1.4.2/go.mod h1:smsv/h4PBEBaU0XDTY5UwJTpZv69fQ0FfcLJr21mA6Y=
 github.com/fasthttp/websocket v1.4.3-beta.1 h1:stc4P2aoxYKsdmbe1AJ5mAm73Fxc1NOgrZpPftvZIXQ=
 github.com/fasthttp/websocket v1.4.3-beta.1/go.mod h1:JGrgLaT02bL9NuJkZbHN8mVV2tkCJZQh7yJ5/XCXO2g=
+github.com/go-playground/assert/v2 v2.0.1 h1:MsBgLAaY856+nPRTKrp3/OZK38U/wa0CcBYNjji3q3A=
+github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
+github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
+github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no=
+github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA=
+github.com/go-playground/validator/v10 v10.5.0 h1:X9rflw/KmpACwT8zdrm1upefpvdy6ur8d1kWyq6sg3E=
+github.com/go-playground/validator/v10 v10.5.0/go.mod h1:xm76BBt941f7yWdGnI2DVPFFg1UK3YY04qifoXU3lOk=
 github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gobuffalo/attrs v0.0.0-20190224210810-a9411de4debd/go.mod h1:4duuawTqi2wkkpB4ePgWMaai6/Kc6WEz83bhFwpHzj0=
@@ -77,6 +85,9 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxv
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/leodido/go-urn v1.2.0/go.mod h1:+8+nEpDfqqsY+g338gtMEUOtuK+4dEMhiQEgxpxOKII=
+github.com/leodido/go-urn v1.2.1 h1:BqpAaACuzVSgi/VLzGZIobT2z4v53pjosyNd9Yv6n/w=
+github.com/leodido/go-urn v1.2.1/go.mod h1:zt4jvISO2HfUBqxjfIshjdMTYS56ZS/qv49ictyFfxY=
 github.com/markbates/oncer v0.0.0-20181203154359-bf2de49a0be2/go.mod h1:Ld9puTsIW75CHf65OeIOkyKbteujpZVXDpWK6YGZbxE=
 github.com/markbates/safe v1.0.1/go.mod h1:nAqgmRi7cY2nqMc92/bSEeQA+R4OheNU2T1kNSCBdG0=
 github.com/mattn/go-sqlite3 v1.14.5 h1:1IdxlwTNazvbKJQSxoJ5/9ECbEeaTTyeU7sEAZ5KKTQ=
@@ -84,8 +95,6 @@ github.com/mattn/go-sqlite3 v1.14.5/go.mod h1:WVKg1VTActs4Qso6iwGbiFih2UIHo0ENGw
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
 github.com/orcaman/concurrent-map v0.0.0-20210106121528-16402b402231 h1:fa50YL1pzKW+1SsBnJDOHppJN9stOEwS+CRWyUtyYGU=
 github.com/orcaman/concurrent-map v0.0.0-20210106121528-16402b402231/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
-github.com/orcaman/concurrent-map v0.0.0-20210501183033-44dafcb38ecc h1:Ak86L+yDSOzKFa7WM5bf5itSOo1e3Xh8bm5YCMUXIjQ=
-github.com/orcaman/concurrent-map v0.0.0-20210501183033-44dafcb38ecc/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
 github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/pelletier/go-toml v1.7.0/go.mod h1:vwGMzjaWMwyfHwgIBhI2YUM4fB6nL6lVAvS1LBMMhTE=
@@ -110,6 +119,7 @@ github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -136,6 +146,7 @@ golang.org/x/crypto v0.0.0-20190422162423-af44ce270edf/go.mod h1:WFFai1msRO1wXaE
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83 h1:/ZScEX8SfEmUGRHs0gxpqteO5nfNW6axyZbBdw9A12g=
 golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
@@ -146,7 +157,6 @@ golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200602114024-627f9648deb9/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20201016165138-7b1cca2348c0/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.0.0-20210226101413-39120d07d75e h1:jIQURUJ9mlLvYwTBtRHm9h58rYhSonLvRvgAnP8Nr7I=
 golang.org/x/net v0.0.0-20210226101413-39120d07d75e/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210421230115-4e50805a0758 h1:aEpZnXcAmXkd6AvLb2OPt+EN1Zu/8Ne3pCqPjja5PXY=
 golang.org/x/net v0.0.0-20210421230115-4e50805a0758/go.mod h1:72T/g9IO56b78aLF+1Kcs5dz7/ng1VjMUvfKvpfy+jM=
@@ -168,15 +178,14 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201210223839-7e3030f88018/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073 h1:8qxJSnu+7dRq6upnbntrmriWByIakBuct5OM/MdQC1M=
 golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210420072515-93ed5bcd2bfe h1:WdX7u8s3yOigWAhHEaDl8r9G+4XwFQEQFtBMYyN+kXQ=
 golang.org/x/sys v0.0.0-20210420072515-93ed5bcd2bfe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -191,6 +200,7 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/api/pkg/controllers/entries_controller.go b/api/pkg/controllers/entries_controller.go
index a8400dcb6..3f607f9a7 100644
--- a/api/pkg/controllers/entries_controller.go
+++ b/api/pkg/controllers/entries_controller.go
@@ -8,66 +8,56 @@ import (
 	"mizuserver/pkg/database"
 	"mizuserver/pkg/models"
 	"mizuserver/pkg/utils"
-	"strconv"
-	"strings"
 )
 
 const (
-	HardLimit = 200
+	OrderDesc = "desc"
+	OrderAsc  = "asc"
+	LT        = "lt"
+	GT        = "gt"
 )
 
-func getSortAndOrder(operator string) (string, string) {
-	var sort, order string
-	if strings.ToLower(operator) == "gt" {
-		sort = ">"
-		order = "asc"
-	} else if strings.ToLower(operator) == "lt" {
-		sort = "<"
-		order = "desc"
-	} else {
-		fmt.Println("Unsupported sort option")
-		return "", ""
+var (
+	operatorToSymbolMapping = map[string]string{
+		LT: "<",
+		GT: ">",
 	}
-	return sort, order
+	operatorToOrderMapping = map[string]string{
+		LT: OrderDesc,
+		GT: OrderAsc,
+	}
+)
+
 
-}
 func GetEntries(c *fiber.Ctx) error {
-	limit, e := strconv.Atoi(c.Query("limit", "200"))
-	utils.CheckErr(e)
-	if limit > HardLimit {
-		fmt.Printf("Limit is greater than hard limit - using hard limit, requestedLimit: %v, hard: %v", limit, HardLimit)
-		limit = HardLimit
+	entriesFilter := new(models.EntriesFilter)
+
+	if err := c.QueryParser(entriesFilter); err != nil {
+		return err
 	}
 
-	operator, order := getSortAndOrder(c.Query("operator", "lt"))
-	if operator == "" || order == "" {
-		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
-			"msg": "invalid operator",
-		})
+	err := utils.Validate(entriesFilter)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(err)
 	}
-	timestamp, e := strconv.Atoi(c.Query("timestamp", "-1"))
-	if timestamp < 0 {
-		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
-			"msg": "invalid timestamp",
-		})
-	}
-	utils.CheckErr(e)
 
+	order := operatorToOrderMapping[entriesFilter.Operator]
+	operatorSymbol := operatorToSymbolMapping[entriesFilter.Operator]
 	var entries []models.MizuEntry
 	database.GetEntriesTable().
 		Order(fmt.Sprintf("timestamp %s", order)).
-		Where(fmt.Sprintf("timestamp %s %v", operator, timestamp)).
+		Where(fmt.Sprintf("timestamp %s %v", operatorSymbol, entriesFilter.Timestamp)).
 		Omit("entry"). // remove the "big" entry field
-		Limit(limit).
+		Limit(entriesFilter.Limit).
 		Find(&entries)
 
-	if len(entries) > 0 && order == "desc" {
+	if len(entries) > 0 && order == OrderDesc {
 		// the entries always order from oldest to newest so we should revers
 		utils.ReverseSlice(entries)
 	}
 
 	// Convert to base entries
-	baseEntries := make([]models.BaseEntryDetails, 0, limit)
+	baseEntries := make([]models.BaseEntryDetails, 0, entriesFilter.Limit)
 	for _, entry := range entries {
 		baseEntries = append(baseEntries, models.BaseEntryDetails{
 			Id:         entry.EntryId,
diff --git a/api/pkg/models/mizuEntry.go b/api/pkg/models/models.go
similarity index 81%
rename from api/pkg/models/mizuEntry.go
rename to api/pkg/models/models.go
index 1c14e6adc..1edb9f0b7 100644
--- a/api/pkg/models/mizuEntry.go
+++ b/api/pkg/models/models.go
@@ -30,3 +30,9 @@ type BaseEntryDetails struct {
 type EntryData struct {
 	Entry string `json:"entry,omitempty"`
 }
+
+type EntriesFilter struct {
+	Limit     int      `query:"limit" validate:"required,min=1,max=200"`
+	Operator  string   `query:"operator" validate:"required,oneof='lt' 'gt'"`
+	Timestamp int64    `query:"timestamp" validate:"required,min=1"`
+}
\ No newline at end of file
diff --git a/api/pkg/utils/validateUtils.go b/api/pkg/utils/validateUtils.go
new file mode 100644
index 000000000..73cff906c
--- /dev/null
+++ b/api/pkg/utils/validateUtils.go
@@ -0,0 +1,38 @@
+package utils
+
+import (
+	"fmt"
+	"github.com/go-playground/locales/en"
+	ut "github.com/go-playground/universal-translator"
+	"github.com/go-playground/validator/v10"
+	et "github.com/go-playground/validator/v10/translations/en"
+)
+
+func Validate(object interface{}) (errs []string){
+	validate, trans := getValidator()
+	err := validate.Struct(object)
+	return translateError(err, trans)
+}
+
+func translateError(err error, trans ut.Translator) (errs []string) {
+	if err == nil {
+		return nil
+	}
+	validatorErrs := err.(validator.ValidationErrors)
+	for _, e := range validatorErrs {
+		translatedErr := fmt.Errorf(e.Translate(trans)).Error()
+		errs = append(errs, translatedErr)
+	}
+	return errs
+}
+
+func getValidator() (*validator.Validate, ut.Translator) {
+
+	validate := validator.New()
+
+	english := en.New()
+	uni := ut.New(english, english)
+	trans, _ := uni.GetTranslator("en")
+	_ = et.RegisterDefaultTranslations(validate, trans)
+	return validate, trans
+}