feat(pull): add get_comments method to pull_request_read

List regular PR discussion comments via the issue comments endpoint,
since Gitea pull requests are issues internally. Reuses the issue
package's slim comment shape with attachment inlining.

Co-Authored-By: Codet <codet@commitgo.dev> (GPT-5-Codex)

operation/pull/pull.go

@@ -20,6 +20,13 @@ import (
 
 var Tool = tool.New("pull_request")
 
+// commentWithAssets wraps the SDK Comment to capture the `assets` field that
+// the SDK currently drops on the issue comments endpoint.
+type commentWithAssets struct {
+	gitea_sdk.Comment
+	Assets []*gitea_sdk.Attachment `json:"assets"`
+}
+
 const (
 	ListRepoPullRequestsToolName   = "list_pull_requests"
 	PullRequestReadToolName        = "pull_request_read"
@@ -43,9 +50,9 @@ var (
 
 	PullRequestReadTool = tool.NewDefinition(
 		PullRequestReadToolName,
-		"Read pull request: details, diff, changed files, head commit status, reviews, review comments.",
+		"Read pull request: details, diff, changed files, head commit status, reviews, review comments, discussion comments.",
 		annotation.ReadOnly("Read pull request details"),
-		tool.String("method", tool.Required(), tool.Enum("get", "get_diff", "get_files", "get_status", "get_reviews", "get_review", "get_review_comments")),
+		tool.String("method", tool.Required(), tool.Enum("get", "get_diff", "get_files", "get_status", "get_reviews", "get_review", "get_review_comments", "get_comments")),
 		tool.String("owner", tool.Required(), tool.Description(params.OwnerDesc)),
 		tool.String("repo", tool.Required(), tool.Description(params.RepoDesc)),
 		tool.Number("pull_number", tool.Required()),
@@ -151,6 +158,8 @@ func pullRequestReadFn(ctx context.Context, args map[string]any) (*mcp.CallToolR
 		return getPullRequestReviewFn(ctx, args)
 	case "get_review_comments":
 		return listPullRequestReviewCommentsFn(ctx, args)
+	case "get_comments":
+		return listPullRequestCommentsFn(ctx, args)
 	default:
 		return to.ErrorResult(fmt.Errorf("unknown method: %s", method))
 	}
@@ -603,6 +612,36 @@ func listPullRequestReviewCommentsFn(ctx context.Context, args map[string]any) (
 	return to.TextResult(slimReviewComments(comments))
 }
 
+func listPullRequestCommentsFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
+	owner, err := params.GetString(args, "owner")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	repo, err := params.GetString(args, "repo")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	index, err := params.GetIndex(args, "pull_number")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+
+	// PRs are issues internally, so the regular discussion comments live on
+	// the issue comments endpoint rather than a pull-specific one.
+	var comments []commentWithAssets
+	path := fmt.Sprintf("repos/%s/%s/issues/%d/comments", url.PathEscape(owner), url.PathEscape(repo), index)
+	if _, err := gitea.DoJSON(ctx, "GET", path, nil, nil, &comments); err != nil {
+		return to.ErrorResult(fmt.Errorf("get %v/%v/pr/%v comments err: %v", owner, repo, index, err))
+	}
+	out := make([]map[string]any, 0, len(comments))
+	for i := range comments {
+		m := slimComment(&comments[i].Comment)
+		m["body"] = slim.BodyWithAttachments(comments[i].Body, comments[i].Assets)
+		out = append(out, m)
+	}
+	return to.TextResult(out)
+}
+
 func createPullRequestReviewFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
 	owner, err := params.GetString(args, "owner")
 	if err != nil {

operation/pull/pull_test.go

@@ -943,6 +943,91 @@ func Test_closePullRequestFn(t *testing.T) {
 	}
 }
 
+func Test_listPullRequestCommentsFn_missingArgs(t *testing.T) {
+	result, err := listPullRequestCommentsFn(context.Background(), map[string]any{
+		"owner": "octo",
+		"repo":  "demo",
+	})
+	if err != nil {
+		t.Fatalf("listPullRequestCommentsFn() error = %v", err)
+	}
+	if result == nil || !result.IsError {
+		t.Fatalf("listPullRequestCommentsFn() result = %#v, want an error result for missing pull_number", result)
+	}
+}
+
+func Test_listPullRequestCommentsFn_apiError(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+		index = 7
+	)
+
+	serveStub(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != fmt.Sprintf("/api/v1/repos/%s/%s/issues/%d/comments", owner, repo, index) {
+			t.Errorf("unexpected request: %s %s", r.Method, r.URL.Path)
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+		http.Error(w, "boom", http.StatusInternalServerError)
+	})
+
+	args := map[string]any{
+		"owner": owner, "repo": repo, "pull_number": float64(index),
+	}
+	result, err := listPullRequestCommentsFn(context.Background(), args)
+	if err != nil {
+		t.Fatalf("listPullRequestCommentsFn() error = %v", err)
+	}
+	if result == nil || !result.IsError {
+		t.Fatalf("listPullRequestCommentsFn() result = %#v, want an error result on API failure", result)
+	}
+}
+
+func Test_listPullRequestCommentsFn_decodesComments(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+		index = 7
+	)
+
+	serveStub(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != fmt.Sprintf("/api/v1/repos/%s/%s/issues/%d/comments", owner, repo, index) {
+			t.Errorf("unexpected request: %s %s", r.Method, r.URL.Path)
+			w.WriteHeader(http.StatusNotFound)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`[
+			{"id": 1, "body": "see this", "assets": [
+				{"id": 9, "name": "log.txt", "size": 200, "browser_download_url": "https://example/log.txt"}
+			]},
+			{"id": 2, "body": "no attachment", "assets": []}
+		]`))
+	})
+
+	args := map[string]any{
+		"method": "get_comments", "owner": owner, "repo": repo, "pull_number": float64(index),
+	}
+	result, err := pullRequestReadFn(context.Background(), args)
+	if err != nil {
+		t.Fatalf("pullRequestReadFn() error = %v", err)
+	}
+	if result.IsError {
+		t.Fatalf("unexpected error result: %v", result.Content)
+	}
+	body := result.Content[0].(*mcp.TextContent).Text
+	if !strings.Contains(body, `[log.txt](https://example/log.txt)`) {
+		t.Fatalf("expected attachment markdown inlined in body, got: %s", body)
+	}
+	if !strings.Contains(body, `"no attachment"`) {
+		t.Fatalf("expected second comment body preserved, got: %s", body)
+	}
+	if strings.Contains(body, `"assets"`) {
+		t.Fatalf("assets should be inlined into body, not a separate field: %s", body)
+	}
+}
+
 func Test_reopenPullRequestFn(t *testing.T) {
 	const (
 		owner = "octo"

operation/pull/slim.go

@@ -164,3 +164,17 @@ func slimReviewComments(comments []*gitea_sdk.PullReviewComment) []map[string]an
 	}
 	return out
 }
+
+func slimComment(c *gitea_sdk.Comment) map[string]any {
+	if c == nil {
+		return nil
+	}
+	return map[string]any{
+		"id":         c.ID,
+		"body":       c.Body,
+		"user":       slim.UserLogin(c.Poster),
+		"html_url":   c.HTMLURL,
+		"created_at": c.Created,
+		"updated_at": c.Updated,
+	}
+}