diff --git a/httpdata/.golangci.yaml b/httpdata/.golangci.yaml
new file mode 100644
index 0000000..d884b2f
--- /dev/null
+++ b/httpdata/.golangci.yaml
@@ -0,0 +1,141 @@
+## 基于 golangci-lint@v1.52.2
+run:
+  timeout: 1m
+  build-tags: [ ]
+  skip-dirs: [ ]
+  skip-files: [ ]
+linters:
+  disable-all: true
+  enable:
+    - errcheck
+    - gosimple
+    - govet
+    - ineffassign
+    - staticcheck
+    - typecheck
+    - unused
+    - asasalint
+    - asciicheck
+    - bidichk
+    - bodyclose
+    - containedctx
+    - cyclop
+    - dupl
+    - durationcheck
+    - errname
+    - errorlint
+    - exhaustive
+    - exportloopref
+    - funlen
+    - gocheckcompilerdirectives
+    - gochecknoinits
+    - goconst
+    - gocritic
+    - gocyclo
+    - goimports
+    - gomnd
+    - goprintffuncname
+    - gosec
+    - lll
+    - loggercheck
+    - makezero
+    - nakedret
+    - nestif
+    - nilnil
+    - noctx
+    - nolintlint
+    - prealloc
+    - predeclared
+    - promlinter
+    - reassign
+    - revive
+    - rowserrcheck
+    - stylecheck
+    - tenv
+    - testableexamples
+    - testpackage
+    - tparallel
+    - unconvert
+    - unparam
+    - usestdlibvars
+    - wastedassign
+    - whitespace
+linters-settings:
+  errcheck:
+    check-type-assertions: true
+    exclude-functions: [ ]
+  govet:
+    enable-all: true
+    disable: [ ]
+  cyclop:
+    max-complexity: 10
+    package-average: 0.0
+  dupl:
+    threshold: 150
+  exhaustive:
+    check:
+      - switch
+      - map
+  funlen:
+    lines: 100
+    statements: 60
+  gocritic:
+    disabled-checks:
+      - commentFormatting
+    settings:
+      captLocal:
+        paramsOnly: false
+      underef:
+        skipRecvDeref: false
+  gocyclo:
+    min-complexity: 20
+  gomnd:
+    ignored-functions:
+      - os.Chmod
+      - os.Mkdir
+      - os.MkdirAll
+      - os.OpenFile
+      - os.WriteFile
+      - prometheus.ExponentialBuckets
+      - prometheus.ExponentialBucketsRange
+      - prometheus.LinearBuckets
+  lll:
+    line-length: 240
+  nakedret:
+    max-func-lines: 10
+  nestif:
+    min-complexity: 5
+  predeclared:
+    ignore: ""
+    q: false
+  reassign:
+    patterns:
+      - ".*"
+  rowserrcheck:
+    packages:
+      - github.com/jmoiron/sqlx
+  tenv:
+    all: true
+  usestdlibvars:
+    time-month: true
+    time-layout: true
+    crypto-hash: true
+    default-rpc-path: true
+    os-dev-null: true
+    sql-isolation-level: true
+    tls-signature-scheme: true
+    constant-kind: true
+    syslog-priority: true
+issues:
+  max-same-issues: 10
+  exclude-rules:
+    - source: "//noinspection"
+      linters: [ gocritic ]
+    - path: "_test\\.go"
+      linters:
+        - bodyclose
+        - dupl
+        - funlen
+        - goconst
+        - gosec
+        - noctx
diff --git a/httpdata/code.go b/httpdata/code.go
new file mode 100644
index 0000000..b158588
--- /dev/null
+++ b/httpdata/code.go
@@ -0,0 +1,14 @@
+package httpdata
+
+type Code string
+
+const (
+	CodeOK               Code = "ok"
+	CodeError            Code = "error"
+	CodeBadRequest       Code = "bad_request"
+	CodeInternal         Code = "internal"
+	CodeInternalUpstream Code = "internal.upstream"
+	CodeUnexpect         Code = "unexpect"
+	CodeUnexpectPanic    Code = "unexpect.panic"
+	CodeUnknown          Code = "unknown"
+)
diff --git a/httpdata/data.go b/httpdata/data.go
new file mode 100644
index 0000000..03c1358
--- /dev/null
+++ b/httpdata/data.go
@@ -0,0 +1,22 @@
+package httpdata
+
+type Response struct {
+	Data    any    `json:"data,omitempty"`
+	Code    Code   `json:"code"`
+	Message string `json:"message,omitempty"`
+}
+
+type PageData struct {
+	List      []any `json:"list"`
+	PageIndex int   `json:"pageIndex"` // >=1
+	PageSize  int   `json:"pageSize"`  // >=1
+	Total     int   `json:"total"`     // maybe 0
+}
+
+func NewOkResponse(data any) Response {
+	return Response{
+		Code:    CodeOK,
+		Message: "",
+		Data:    data,
+	}
+}
diff --git a/httpdata/error.go b/httpdata/error.go
new file mode 100644
index 0000000..927fd6c
--- /dev/null
+++ b/httpdata/error.go
@@ -0,0 +1,42 @@
+package httpdata
+
+import (
+	"errors"
+)
+
+type UniverseError struct {
+	Code    Code
+	Message string
+}
+
+func NewUniverseError(code Code, message string) error {
+	return UniverseError{
+		Code:    code,
+		Message: message,
+	}
+}
+
+func NewBadRequestError(message string) error {
+	return UniverseError{
+		Code:    CodeBadRequest,
+		Message: message,
+	}
+}
+
+func (err UniverseError) Error() string {
+	if err.Message == "" {
+		return string(err.Code)
+	}
+	return string(err.Code) + ": " + err.Message
+}
+
+func IsUniverseError(err error) bool {
+	return errors.As(err, &UniverseError{})
+}
+
+func ToUniverseError(err error, code Code, message string) error {
+	if err == nil || IsUniverseError(err) {
+		return err
+	}
+	return NewUniverseError(code, message)
+}
diff --git a/httpdata/go.mod b/httpdata/go.mod
new file mode 100644
index 0000000..5372031
--- /dev/null
+++ b/httpdata/go.mod
@@ -0,0 +1,3 @@
+module git.blauwelle.com/go/crate/httpdata
+
+go 1.21.1