diff --git a/operation/issue/blocking.go b/operation/issue/blocking.go
index 62a1e14..8722178 100644
--- a/operation/issue/blocking.go
+++ b/operation/issue/blocking.go
@@ -3,6 +3,8 @@ package issue
 import (
 	"context"
 	"fmt"
+	"net/http"
+	"net/url"
 
 	"gitea.com/gitea/gitea-mcp/pkg/gitea"
 	"gitea.com/gitea/gitea-mcp/pkg/params"
@@ -12,6 +14,14 @@ import (
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 
+// issueMeta carries owner/repo in the body; the SDK's IssueMeta only has Index
+// and Gitea resolves the body repo from those fields.
+type issueMeta struct {
+	Index int64  `json:"index"`
+	Owner string `json:"owner"`
+	Repo  string `json:"repo"`
+}
+
 func listIssueBlocksFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
 	owner, repo, index, err := issueRef(args)
 	if err != nil {
@@ -49,21 +59,16 @@ func setIssueBlockingFn(ctx context.Context, args map[string]any, block bool) (*
 	if err != nil {
 		return to.ErrorResult(err)
 	}
-	client, err := gitea.ClientFromContext(ctx)
-	if err != nil {
-		return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
+	method := http.MethodPost
+	if !block {
+		method = http.MethodDelete
 	}
-	meta := gitea_sdk.IssueMeta{Index: blocked}
-	var issue *gitea_sdk.Issue
-	if block {
-		issue, _, err = client.Issues.CreateIssueBlocking(ctx, owner, repo, index, meta)
-	} else {
-		issue, _, err = client.Issues.RemoveIssueBlocking(ctx, owner, repo, index, meta)
-	}
-	if err != nil {
+	var issue gitea_sdk.Issue
+	path := fmt.Sprintf("repos/%s/%s/issues/%d/blocks", url.PathEscape(owner), url.PathEscape(repo), index)
+	if _, err := gitea.DoJSON(ctx, method, path, nil, issueMeta{Index: blocked, Owner: owner, Repo: repo}, &issue); err != nil {
 		return to.ErrorResult(fmt.Errorf("update %v/%v/issue/%v/blocks err: %v", owner, repo, index, err))
 	}
-	return to.TextResult(slimIssue(issue))
+	return to.TextResult(slimIssue(&issue))
 }
 
 func listIssueDependenciesFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
@@ -103,21 +108,16 @@ func setIssueDependencyFn(ctx context.Context, args map[string]any, add bool) (*
 	if err != nil {
 		return to.ErrorResult(err)
 	}
-	client, err := gitea.ClientFromContext(ctx)
-	if err != nil {
-		return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
+	method := http.MethodPost
+	if !add {
+		method = http.MethodDelete
 	}
-	meta := gitea_sdk.IssueMeta{Index: blocking}
-	var issue *gitea_sdk.Issue
-	if add {
-		issue, _, err = client.Issues.CreateIssueDependency(ctx, owner, repo, index, meta)
-	} else {
-		issue, _, err = client.Issues.RemoveIssueDependency(ctx, owner, repo, index, meta)
-	}
-	if err != nil {
+	var issue gitea_sdk.Issue
+	path := fmt.Sprintf("repos/%s/%s/issues/%d/dependencies", url.PathEscape(owner), url.PathEscape(repo), index)
+	if _, err := gitea.DoJSON(ctx, method, path, nil, issueMeta{Index: blocking, Owner: owner, Repo: repo}, &issue); err != nil {
 		return to.ErrorResult(fmt.Errorf("update %v/%v/issue/%v/dependencies err: %v", owner, repo, index, err))
 	}
-	return to.TextResult(slimIssue(issue))
+	return to.TextResult(slimIssue(&issue))
 }
 
 func issueRef(args map[string]any) (owner, repo string, index int64, err error) {
diff --git a/operation/issue/blocking_test.go b/operation/issue/blocking_test.go
index cd1c4d2..adae1c0 100644
--- a/operation/issue/blocking_test.go
+++ b/operation/issue/blocking_test.go
@@ -135,8 +135,16 @@ func Test_issueBlocking(t *testing.T) {
 			if tt.wantQuery != "" && gotQuery != tt.wantQuery {
 				t.Fatalf("query = %s, want %s", gotQuery, tt.wantQuery)
 			}
-			if tt.wantIndex != 0 && gotBody["index"] != tt.wantIndex {
-				t.Fatalf("body index = %v, want %v", gotBody["index"], tt.wantIndex)
+			if tt.wantIndex != 0 {
+				if gotBody["index"] != tt.wantIndex {
+					t.Fatalf("body index = %v, want %v", gotBody["index"], tt.wantIndex)
+				}
+				if gotBody["owner"] != owner {
+					t.Fatalf("body owner = %v, want %s", gotBody["owner"], owner)
+				}
+				if gotBody["repo"] != repo {
+					t.Fatalf("body repo = %v, want %s", gotBody["repo"], repo)
+				}
 			}
 			body := res.Content[0].(*mcp.TextContent).Text
 			if !strings.Contains(body, `"number":7`) && !strings.Contains(body, `"number": 7`) {