Support read only mode (#36)

Fix: #35
Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/36
Co-authored-by: hiifong <f@ilo.nz>
Co-committed-by: hiifong <f@ilo.nz>

Dockerfile

@@ -20,6 +20,8 @@ RUN CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=${VERSION}" -o gitea-
 # Final stage
 FROM debian:bullseye-slim
 
+ENV GITEA_MODE stdio
+
 WORKDIR /app
 
 # Install ca-certificates for HTTPS requests
@@ -34,4 +36,4 @@ COPY --from=builder --chown=1000:1000 /app/gitea-mcp .
 # Use the non-root user
 USER gitea-mcp
 
-CMD ["/app/gitea-mcp", "-t", "stdio"]
+CMD ["/app/gitea-mcp"]

cmd/cmd.go

@@ -11,23 +11,20 @@ import (
 )
 
 var (
-	transport string
+	host  string
-	host      string
+	port  int
-	port      int
+	token string
-	token     string
-
-	debug *bool
 )
 
 func init() {
 	flag.StringVar(
-		&transport,
+		&flagPkg.Mode,
 		"t",
 		"stdio",
 		"Transport type (stdio or sse)",
 	)
 	flag.StringVar(
-		&transport,
+		&flagPkg.Mode,
 		"transport",
 		"stdio",
 		"Transport type (stdio or sse)",
@@ -50,14 +47,17 @@ func init() {
 		"",
 		"Your personal access token",
 	)
-	flag.BoolFunc(
+	flag.BoolVar(
+		&flagPkg.ReadOnly,
+		"read-only",
+		false,
+		"Read-only mode",
+	)
+	flag.BoolVar(
+		&flagPkg.Debug,
 		"d",
+		false,
 		"debug mode (If -d flag is provided, debug mode will be enabled by default)",
-		func(string) error {
-			debug = new(bool)
-			*debug = true
-			return nil
-		},
 	)
 	flag.BoolVar(
 		&flagPkg.Insecure,
@@ -80,13 +80,16 @@ func init() {
 		flagPkg.Token = os.Getenv("GITEA_ACCESS_TOKEN")
 	}
 
-	flagPkg.Mode = transport
+	if os.Getenv("GITEA_MODE") != "" {
-
+		flagPkg.Mode = os.Getenv("GITEA_MODE")
-	if debug != nil && *debug {
-		flagPkg.Debug = *debug
 	}
-	if debug != nil && !*debug {
+
-		flagPkg.Debug = os.Getenv("GITEA_DEBUG") == "true"
+	if os.Getenv("GITEA_READONLY") == "true" {
+		flagPkg.ReadOnly = true
+	}
+
+	if os.Getenv("GITEA_DEBUG") == "true" {
+		flagPkg.Debug = true
 	}
 
 	// Set insecure mode based on environment variable
@@ -95,9 +98,9 @@ func init() {
 	}
 }
 
-func Execute(version string) {
+func Execute() {
 	defer log.Default().Sync()
-	if err := operation.Run(transport, version); err != nil {
+	if err := operation.Run(); err != nil {
 		if err == context.Canceled {
 			log.Info("Server shutdown due to context cancellation")
 			return

go.mod

@@ -4,7 +4,7 @@ go 1.24.0
 
 require (
 	code.gitea.io/sdk/gitea v0.21.0
-	github.com/mark3labs/mcp-go v0.18.0
+	github.com/mark3labs/mcp-go v0.22.0
 	go.uber.org/zap v1.27.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 )
@@ -15,8 +15,9 @@ require (
 	github.com/go-fed/httpsig v1.1.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/go-version v1.7.0 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.36.0 // indirect
+	golang.org/x/crypto v0.37.0 // indirect
 	golang.org/x/sys v0.32.0 // indirect
 )

go.sum

@@ -6,16 +6,28 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davidmz/go-pageant v1.0.2 h1:bPblRCh5jGU+Uptpz6LgMZGD5hJoOt7otgT454WvHn0=
 github.com/davidmz/go-pageant v1.0.2/go.mod h1:P2EDDnMqIwG5Rrp05dTRITj9z2zpGcD9efWSkTNKLIE=
+github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
+github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/go-fed/httpsig v1.1.0 h1:9M+hb0jkEICD8/cAiNqEB66R87tTINszBRTjwjQzWcI=
 github.com/go-fed/httpsig v1.1.0/go.mod h1:RCMrTZvN1bJYtofsG4rd5NaO5obxQ5xBkdiS7xsT7bM=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
 github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
-github.com/mark3labs/mcp-go v0.18.0 h1:YuhgIVjNlTG2ZOwmrkORWyPTp0dz1opPEqvsPtySXao=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
-github.com/mark3labs/mcp-go v0.18.0/go.mod h1:KmJndYv7GIgcPVwEKJjNcbhVQ+hJGJhrCCB/9xITzpE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/mark3labs/mcp-go v0.22.0 h1:cCEBWi4Yy9Kio+OW1hWIyi4WLsSr+RBBK6FI5tj+b7I=
+github.com/mark3labs/mcp-go v0.22.0/go.mod h1:rXqOudj/djTORU/ThxYx8fqEVj/5pvTuuebQ2RC7uk4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/spf13/cast v1.7.1 h1:cuNEagBQEHWN1FnbGEjCXL2szYEXqfJPbP2HNUaca9Y=
+github.com/spf13/cast v1.7.1/go.mod h1:ancEpBxwJDODSW/UG4rDrAqiKolqNNh2DX3mk86cAdo=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/yosida95/uritemplate/v3 v3.0.2 h1:Ed3Oyj9yrmi9087+NczuL5BwkIc4wvTb5zIM+UJPGz4=
@@ -29,8 +41,8 @@ go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
-golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
+golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE=
-golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
+golang.org/x/crypto v0.37.0/go.mod h1:vg+k43peMZ0pUMhYmVAWysMK35e6ioLh3wB8ZCAfbVc=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -39,8 +51,8 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.32.0 h1:s77OFDvIQeibCmezSnk/q6iAfkdiQaJi4VzroCFrN20=
 golang.org/x/sys v0.32.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.30.0 h1:PQ39fJZ+mfadBm0y5WlL4vlM7Sx1Hgf13sMIY2+QS9Y=
+golang.org/x/term v0.31.0 h1:erwDkOK1Msy6offm1mOgvspSkslFnIGsFnxOKoufg3o=
-golang.org/x/term v0.30.0/go.mod h1:NYYFdzHoI5wRh/h5tDMdMqCqPJZEuNqVR5xJLd/n67g=
+golang.org/x/term v0.31.0/go.mod h1:R4BeIy7D95HzImkxGkTW1UQTtP54tio2RyHz7PwK0aw=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

main.go

@@ -2,12 +2,17 @@ package main
 
 import (
 	"gitea.com/gitea/gitea-mcp/cmd"
+	"gitea.com/gitea/gitea-mcp/pkg/flag"
 )
 
 var (
 	Version = "dev"
 )
 
-func main() {
+func init() {
-	cmd.Execute(Version)
+	flag.Version = Version
+}
+
+func main() {
+	cmd.Execute()
 }

operation/issue/issue.go

@@ -8,12 +8,15 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/ptr"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	GetIssueByIndexToolName    = "get_issue_by_index"
 	ListRepoIssuesToolName     = "list_repo_issues"
@@ -71,12 +74,27 @@ var (
 	)
 )
 
-func RegisterTool(s *server.MCPServer) {
+func init() {
-	s.AddTool(GetIssueByIndexTool, GetIssueByIndexFn)
+	Tool.RegisterRead(server.ServerTool{
-	s.AddTool(ListRepoIssuesTool, ListRepoIssuesFn)
+		Tool:    GetIssueByIndexTool,
-	s.AddTool(CreateIssueTool, CreateIssueFn)
+		Handler: GetIssueByIndexFn,
-	s.AddTool(CreateIssueCommentTool, CreateIssueCommentFn)
+	})
-	s.AddTool(EditIssueTool, EditIssueFn)
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListRepoIssuesTool,
+		Handler: ListRepoIssuesFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateIssueTool,
+		Handler: CreateIssueFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateIssueCommentTool,
+		Handler: CreateIssueCommentFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    EditIssueTool,
+		Handler: EditIssueFn,
+	})
 }
 
 func GetIssueByIndexFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {

operation/operation.go

@@ -21,29 +21,30 @@ var (
 
 func RegisterTool(s *server.MCPServer) {
 	// User Tool
-	user.RegisterTool(s)
+	s.AddTools(user.Tool.Tools()...)
 
 	// Repo Tool
-	repo.RegisterTool(s)
+	s.AddTools(repo.Tool.Tools()...)
 
 	// Issue Tool
-	issue.RegisterTool(s)
+	s.AddTools(issue.Tool.Tools()...)
 
 	// Pull Tool
-	pull.RegisterTool(s)
+	s.AddTools(pull.Tool.Tools()...)
 
 	// Search Tool
-	search.RegisterTool(s)
+	s.AddTools(search.Tool.Tools()...)
 
 	// Version Tool
-	version.RegisterTool(s)
+	s.AddTools(version.Tool.Tools()...)
+
+	s.DeleteTools("")
 }
 
-func Run(transport, version string) error {
+func Run() error {
-	flag.Version = version
+	mcpServer = newMCPServer(flag.Version)
-	mcpServer = newMCPServer(version)
 	RegisterTool(mcpServer)
-	switch transport {
+	switch flag.Mode {
 	case "stdio":
 		if err := server.ServeStdio(mcpServer); err != nil {
 			return err
@@ -55,7 +56,7 @@ func Run(transport, version string) error {
 			return err
 		}
 	default:
-		return fmt.Errorf("invalid transport type: %s. Must be 'stdio' or 'sse'", transport)
+		return fmt.Errorf("invalid transport type: %s. Must be 'stdio' or 'sse'", flag.Mode)
 	}
 	return nil
 }
@@ -64,6 +65,7 @@ func newMCPServer(version string) *server.MCPServer {
 	return server.NewMCPServer(
 		"Gitea MCP Server",
 		version,
+		server.WithToolCapabilities(true),
 		server.WithLogging(),
 	)
 }

operation/pull/pull.go

@@ -7,12 +7,15 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	GetPullRequestByIndexToolName = "get_pull_request_by_index"
 	ListRepoPullRequestsToolName  = "list_repo_pull_requests"
@@ -52,10 +55,19 @@ var (
 	)
 )
 
-func RegisterTool(s *server.MCPServer) {
+func init() {
-	s.AddTool(GetPullRequestByIndexTool, GetPullRequestByIndexFn)
+	Tool.RegisterRead(server.ServerTool{
-	s.AddTool(ListRepoPullRequestsTool, ListRepoPullRequestsFn)
+		Tool:    GetPullRequestByIndexTool,
-	s.AddTool(CreatePullRequestTool, CreatePullRequestFn)
+		Handler: GetPullRequestByIndexFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListRepoPullRequestsTool,
+		Handler: ListRepoPullRequestsFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreatePullRequestTool,
+		Handler: CreatePullRequestFn,
+	})
 }
 
 func GetPullRequestByIndexFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {

operation/repo/branch.go

@@ -10,6 +10,7 @@ import (
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
 )
 
 const (
@@ -44,6 +45,21 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateBranchTool,
+		Handler: CreateBranchFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    DeleteBranchTool,
+		Handler: DeleteBranchFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListBranchesTool,
+		Handler: ListBranchesFn,
+	})
+}
+
 func CreateBranchFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 	log.Debugf("Called CreateBranchFn")
 	owner, ok := req.Params.Arguments["owner"].(string)

operation/repo/commit.go

@@ -10,6 +10,7 @@ import (
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
 )
 
 const (
@@ -29,6 +30,13 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListRepoCommitsTool,
+		Handler: ListRepoCommitsFn,
+	})
+}
+
 func ListRepoCommitsFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 	log.Debugf("Called ListRepoCommitsFn")
 	owner, ok := req.Params.Arguments["owner"].(string)

operation/repo/file.go

@@ -11,6 +11,7 @@ import (
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
 )
 
 const (
@@ -66,6 +67,25 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetFileContentTool,
+		Handler: GetFileContentFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateFileTool,
+		Handler: CreateFileFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    UpdateFileTool,
+		Handler: UpdateFileFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    DeleteFileTool,
+		Handler: DeleteFileFn,
+	})
+}
+
 func GetFileContentFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 	log.Debugf("Called GetFileFn")
 	owner, ok := req.Params.Arguments["owner"].(string)

operation/repo/release.go

@@ -5,12 +5,14 @@ import (
 	"fmt"
 	"time"
 
-	gitea_sdk "code.gitea.io/sdk/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/ptr"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+
+	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
 )
 
 const (
@@ -69,6 +71,29 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateReleaseTool,
+		Handler: CreateReleaseFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    DeleteReleaseTool,
+		Handler: DeleteReleaseFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetReleaseTool,
+		Handler: GetReleaseFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetLatestReleaseTool,
+		Handler: GetLatestReleaseFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListReleasesTool,
+		Handler: ListReleasesFn,
+	})
+}
+
 // To avoid return too many tokens, we need to provide at least information as possible
 // llm can call get release to get more information
 type ListReleaseResult struct {

operation/repo/repo.go

@@ -9,12 +9,15 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/ptr"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	CreateRepoToolName  = "create_repo"
 	ForkRepoToolName    = "fork_repo"
@@ -54,6 +57,21 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateRepoTool,
+		Handler: CreateRepoFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    ForkRepoTool,
+		Handler: ForkRepoFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListMyReposTool,
+		Handler: ListMyReposFn,
+	})
+}
+
 func RegisterTool(s *server.MCPServer) {
 	s.AddTool(CreateRepoTool, CreateRepoFn)
 	s.AddTool(ForkRepoTool, ForkRepoFn)

operation/repo/tag.go

@@ -4,11 +4,13 @@ import (
 	"context"
 	"fmt"
 
-	gitea_sdk "code.gitea.io/sdk/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+
+	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
 )
 
 const (
@@ -55,6 +57,25 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateTagTool,
+		Handler: CreateTagFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    DeleteTagTool,
+		Handler: DeleteTagFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetTagTool,
+		Handler: GetTagFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListTagsTool,
+		Handler: ListTagsFn,
+	})
+}
+
 // To avoid return too many tokens, we need to provide at least information as possible
 // llm can call get tag to get more information
 type ListTagResult struct {

operation/search/search.go

@@ -8,12 +8,15 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/ptr"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	SearchUsersToolName    = "search_users"
 	SearchOrgTeamsToolName = "search_org_teams"
@@ -55,10 +58,19 @@ var (
 	)
 )
 
-func RegisterTool(s *server.MCPServer) {
+func init() {
-	s.AddTool(SearchUsersTool, SearchUsersFn)
+	Tool.RegisterRead(server.ServerTool{
-	s.AddTool(SearOrgTeamsTool, SearchOrgTeamsFn)
+		Tool:    SearchUsersTool,
-	s.AddTool(SearchReposTool, SearchReposFn)
+		Handler: SearchUsersFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    SearOrgTeamsTool,
+		Handler: SearchOrgTeamsFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    SearchReposTool,
+		Handler: SearchReposFn,
+	})
 }
 
 func SearchUsersFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {

operation/user/user.go

@@ -7,6 +7,7 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
@@ -18,6 +19,8 @@ const (
 	GetUserOrgsToolName   = "get_user_orgs"
 )
 
+var Tool = tool.New()
+
 var (
 	GetMyUserInfoTool = mcp.NewTool(
 		GetMyUserInfoToolName,
@@ -32,9 +35,16 @@ var (
 	)
 )
 
-func RegisterTool(s *server.MCPServer) {
+func init() {
-	s.AddTool(GetMyUserInfoTool, GetUserInfoFn)
+	Tool.RegisterRead(server.ServerTool{
-	s.AddTool(GetUserOrgsTool, GetUserOrgsFn)
+		Tool:    GetMyUserInfoTool,
+		Handler: GetUserInfoFn,
+	})
+
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetUserOrgsTool,
+		Handler: GetUserOrgsFn,
+	})
 }
 
 func GetUserInfoFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {

operation/version/version.go

@@ -7,11 +7,14 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/flag"
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	GetGiteaMCPServerVersion = "get_gitea_mcp_server_version"
 )
@@ -23,8 +26,11 @@ var (
 	)
 )
 
-func RegisterTool(s *server.MCPServer) {
+func init() {
-	s.AddTool(GetGiteaMCPServerVersionTool, GetGiteaMCPServerVersionFn)
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    GetGiteaMCPServerVersionTool,
+		Handler: GetGiteaMCPServerVersionFn,
+	})
 }
 
 func GetGiteaMCPServerVersionFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {

pkg/flag/flag.go

@@ -8,5 +8,6 @@ var (
 	Mode    string
 
 	Insecure bool
+	ReadOnly bool
 	Debug    bool
 )

pkg/tool/tool.go

@@ -0,0 +1,37 @@
+package tool
+
+import (
+	"gitea.com/gitea/gitea-mcp/pkg/flag"
+	"github.com/mark3labs/mcp-go/server"
+)
+
+type Tool struct {
+	write []server.ServerTool
+	read  []server.ServerTool
+}
+
+func New() *Tool {
+	return &Tool{
+		write: make([]server.ServerTool, 100),
+		read:  make([]server.ServerTool, 100),
+	}
+}
+
+func (t *Tool) RegisterWrite(s server.ServerTool) {
+	t.write = append(t.write, s)
+}
+
+func (t *Tool) RegisterRead(s server.ServerTool) {
+	t.read = append(t.read, s)
+}
+
+func (t *Tool) Tools() []server.ServerTool {
+	tools := make([]server.ServerTool, 0, len(t.write)+len(t.read))
+	if flag.ReadOnly {
+		tools = append(tools, t.read...)
+		return tools
+	}
+	tools = append(tools, t.write...)
+	tools = append(tools, t.read...)
+	return tools
+}