fix: add missing descriptions for various tools

Fixes interoperability with vscode, Perplexity, Mistral and others.

operation/issue/issue.go

@@ -40,6 +40,7 @@ const (
 var (
 	ListRepoIssuesTool = mcp.NewTool(
 		ListRepoIssuesToolName,
+		mcp.WithDescription("List issues in a repository (or pull requests, via the 'type' filter), filterable by state, labels, milestones, and update time range."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List repository issues")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/operation_test.go

@@ -2,8 +2,36 @@ package operation
 
 import (
 	"testing"
+
+	"gitea.com/gitea/gitea-mcp/pkg/flag"
 )
 
+// TestAllToolsHaveDescriptions ensures every registered tool sets a non-empty
+// Tool.Description. mcp-go only serializes the "description" field of a tool
+// when it is non-empty, so an omitted description makes strict MCP clients
+// (e.g. mcp-probe) reject the tools/list response with "missing field
+// `description`".
+func TestAllToolsHaveDescriptions(t *testing.T) {
+	origRO, origAllow := flag.ReadOnly, flag.AllowedTools
+	t.Cleanup(func() {
+		flag.ReadOnly, flag.AllowedTools = origRO, origAllow
+	})
+	flag.ReadOnly = false
+	flag.AllowedTools = nil
+
+	var missing []string
+	for _, d := range domainTools {
+		for _, st := range d.Tools() {
+			if st.Tool.Description == "" {
+				missing = append(missing, st.Tool.Name)
+			}
+		}
+	}
+	if len(missing) > 0 {
+		t.Errorf("tools missing a description: %v", missing)
+	}
+}
+
 func TestParseAuthToken(t *testing.T) {
 	tests := []struct {
 		name      string

operation/pull/pull.go

@@ -31,6 +31,7 @@ const (
 var (
 	ListRepoPullRequestsTool = mcp.NewTool(
 		ListRepoPullRequestsToolName,
+		mcp.WithDescription("List pull requests in a repository, filterable by state and milestone, with configurable sort order (e.g. recently updated, most commented)."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List pull requests")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/branch.go

@@ -23,6 +23,7 @@ const (
 var (
 	CreateBranchTool = mcp.NewTool(
 		CreateBranchToolName,
+		mcp.WithDescription("Create a new branch in a repository, optionally from a specific source branch (defaults to the repository's default branch)."),
 		mcp.WithToolAnnotation(annotation.Write("Create a new branch")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -32,6 +33,7 @@ var (
 
 	DeleteBranchTool = mcp.NewTool(
 		DeleteBranchToolName,
+		mcp.WithDescription("Permanently delete a branch from a repository. This action is destructive and cannot be undone."),
 		mcp.WithToolAnnotation(annotation.Destructive("Delete a branch")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -40,6 +42,7 @@ var (
 
 	ListBranchesTool = mcp.NewTool(
 		ListBranchesToolName,
+		mcp.WithDescription("List all branches in a repository, paginated."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List repository branches")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/commit.go

@@ -22,6 +22,7 @@ const (
 var (
 	ListRepoCommitsTool = mcp.NewTool(
 		ListRepoCommitsToolName,
+		mcp.WithDescription("List commits in a repository, optionally starting from a specific branch or SHA and filtered to commits touching a given file path."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List repository commits")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -33,6 +34,7 @@ var (
 
 	GetCommitTool = mcp.NewTool(
 		GetCommitToolName,
+		mcp.WithDescription("Get details for a single commit in a repository by its SHA."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Get commit details")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/file.go

@@ -39,6 +39,7 @@ var (
 
 	GetDirContentTool = mcp.NewTool(
 		GetDirToolName,
+		mcp.WithDescription("List the entries (files and subdirectories) in a repository directory at a given ref (branch, tag, or commit SHA)."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Get directory contents")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -62,6 +63,7 @@ var (
 
 	DeleteFileTool = mcp.NewTool(
 		DeleteFileToolName,
+		mcp.WithDescription("Delete a file from a repository by committing the removal to a branch. Requires the file's current SHA and a commit message."),
 		mcp.WithToolAnnotation(annotation.Destructive("Delete a file")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/release.go

@@ -25,6 +25,7 @@ const (
 var (
 	CreateReleaseTool = mcp.NewTool(
 		CreateReleaseToolName,
+		mcp.WithDescription("Create a new release in a repository from a tag, optionally marking it as a draft or pre-release."),
 		mcp.WithToolAnnotation(annotation.Write("Create a release")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -38,6 +39,7 @@ var (
 
 	DeleteReleaseTool = mcp.NewTool(
 		DeleteReleaseToolName,
+		mcp.WithDescription("Delete a release from a repository by its numeric ID. This action is destructive and cannot be undone."),
 		mcp.WithToolAnnotation(annotation.Destructive("Delete a release")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -55,6 +57,7 @@ var (
 
 	GetLatestReleaseTool = mcp.NewTool(
 		GetLatestReleaseToolName,
+		mcp.WithDescription("Get the most recent published (non-draft) release in a repository."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Get latest release")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -62,6 +65,7 @@ var (
 
 	ListReleasesTool = mcp.NewTool(
 		ListReleasesToolName,
+		mcp.WithDescription("List releases in a repository, optionally filtered to drafts or pre-releases."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List releases")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/repo.go

@@ -28,6 +28,7 @@ const (
 var (
 	CreateRepoTool = mcp.NewTool(
 		CreateRepoToolName,
+		mcp.WithDescription("Create a new Git repository, optionally under an organization (defaults to the authenticated user's account), with options for visibility, template, license, .gitignore, and initial README."),
 		mcp.WithToolAnnotation(annotation.Write("Create a new repository")),
 		mcp.WithString("name", mcp.Required()),
 		mcp.WithString("description"),
@@ -46,6 +47,7 @@ var (
 
 	ForkRepoTool = mcp.NewTool(
 		ForkRepoToolName,
+		mcp.WithDescription("Fork an existing repository into the authenticated user's account or a target organization, optionally under a new name."),
 		mcp.WithToolAnnotation(annotation.Write("Fork a repository")),
 		mcp.WithString("user", mcp.Required(), mcp.Description("owner of source repo")),
 		mcp.WithString("repo", mcp.Required()),
@@ -55,6 +57,7 @@ var (
 
 	ListMyReposTool = mcp.NewTool(
 		ListMyReposToolName,
+		mcp.WithDescription("List repositories owned by the authenticated user."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List my repositories")),
 		mcp.WithNumber("page", mcp.Description(params.PageDesc), mcp.DefaultNumber(1), mcp.Min(1)),
 		mcp.WithNumber("per_page", mcp.Description(params.PaginationDesc), mcp.DefaultNumber(30), mcp.Min(1)),
@@ -62,6 +65,7 @@ var (
 
 	ListOrgReposTool = mcp.NewTool(
 		ListOrgReposToolName,
+		mcp.WithDescription("List repositories belonging to an organization."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List organization repositories")),
 		mcp.WithString("org", mcp.Required()),
 		mcp.WithNumber("page", mcp.Description(params.PageDesc), mcp.DefaultNumber(1), mcp.Min(1)),

operation/repo/tag.go

@@ -24,6 +24,7 @@ const (
 var (
 	CreateTagTool = mcp.NewTool(
 		CreateTagToolName,
+		mcp.WithDescription("Create a new Git tag in a repository at a target commit, branch, or existing tag, with an optional annotation message."),
 		mcp.WithToolAnnotation(annotation.Write("Create a tag")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -34,6 +35,7 @@ var (
 
 	DeleteTagTool = mcp.NewTool(
 		DeleteTagToolName,
+		mcp.WithDescription("Permanently delete a tag from a repository. This action is destructive and cannot be undone."),
 		mcp.WithToolAnnotation(annotation.Destructive("Delete a tag")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -42,6 +44,7 @@ var (
 
 	GetTagTool = mcp.NewTool(
 		GetTagToolName,
+		mcp.WithDescription("Get details for a single tag in a repository by name."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Get tag details")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),
@@ -50,6 +53,7 @@ var (
 
 	ListTagsTool = mcp.NewTool(
 		ListTagsToolName,
+		mcp.WithDescription("List all tags in a repository, paginated."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("List tags")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 		mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/repo/tree.go

@@ -20,6 +20,7 @@ const (
 
 var GetRepoTreeTool = mcp.NewTool(
 	GetRepoTreeToolName,
+	mcp.WithDescription("Get the file tree of a repository at a given ref (SHA, branch, or tag), optionally recursively."),
 	mcp.WithToolAnnotation(annotation.ReadOnly("Get repository file tree")),
 	mcp.WithString("owner", mcp.Required(), mcp.Description(params.OwnerDesc)),
 	mcp.WithString("repo", mcp.Required(), mcp.Description(params.RepoDesc)),

operation/search/search.go

@@ -29,6 +29,7 @@ const (
 var (
 	SearchUsersTool = mcp.NewTool(
 		SearchUsersToolName,
+		mcp.WithDescription("Search for Gitea users by username or full name."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Search users")),
 		mcp.WithString("query", mcp.Required()),
 		mcp.WithNumber("page", mcp.Description(params.PageDesc), mcp.DefaultNumber(1)),
@@ -37,6 +38,7 @@ var (
 
 	SearOrgTeamsTool = mcp.NewTool(
 		SearchOrgTeamsToolName,
+		mcp.WithDescription("Search for teams within an organization by name, optionally including each team's description in the results."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Search organization teams")),
 		mcp.WithString("org", mcp.Required()),
 		mcp.WithString("query", mcp.Required()),
@@ -47,6 +49,7 @@ var (
 
 	SearchReposTool = mcp.NewTool(
 		SearchReposToolName,
+		mcp.WithDescription("Search for repositories by keyword, with filters for topic/description matching, owner, visibility, archived status, and sort order."),
 		mcp.WithToolAnnotation(annotation.ReadOnly("Search repositories")),
 		mcp.WithString("query", mcp.Required()),
 		mcp.WithBoolean("keywordIsTopic"),

operation/version/version.go

@@ -21,6 +21,7 @@ const (
 
 var GetGiteaMCPServerVersionTool = mcp.NewTool(
 	GetGiteaMCPServerVersion,
+	mcp.WithDescription("Get the running version of the Gitea MCP Server itself (not the Gitea instance it connects to)."),
 	mcp.WithToolAnnotation(annotation.ReadOnly("Get server version")),
 )