feat(issue): add get_discussion_markdown to issue_read

Adds a new issue_read method that fetches an issue and its comments
and renders them as a single Markdown document, instead of a JSON
array. Formatting logic lives in a pure, unit-tested helper
(formatDiscussionMarkdown) covering comment rendering, empty comment
lists, and attachment-inlined bodies. Existing get/get_comments/
get_labels methods are unchanged.

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

operation/actions/pr_runs_test.go

@@ -1,98 +0,0 @@
-package actions
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"net/url"
-	"testing"
-
-	"gitea.com/gitea/gitea-mcp/pkg/flag"
-
-	"github.com/modelcontextprotocol/go-sdk/mcp"
-)
-
-func Test_listPullRequestActionRunsFn(t *testing.T) {
-	const (
-		owner      = "octo"
-		repo       = "demo"
-		pullNumber = 42
-		headSHA    = "abc123"
-	)
-
-	var gotRunsQuery string
-
-	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		switch r.URL.Path {
-		case fmt.Sprintf("/api/v1/repos/%s/%s/pulls/%d", owner, repo, pullNumber):
-			w.Header().Set("Content-Type", "application/json")
-			_, _ = w.Write(fmt.Appendf(nil, `{"number":%d,"head":{"sha":"%s"}}`, pullNumber, headSHA))
-		case fmt.Sprintf("/api/v1/repos/%s/%s/actions/runs", owner, repo):
-			gotRunsQuery = r.URL.RawQuery
-			w.Header().Set("Content-Type", "application/json")
-			_, _ = w.Write([]byte(`{"total_count":1,"workflow_runs":[{"id":9,"name":"CI","status":"success"}]}`))
-		default:
-			http.NotFound(w, r)
-		}
-	})
-
-	server := httptest.NewServer(handler)
-	defer server.Close()
-
-	origHost := flag.Host
-	origToken := flag.Token
-	flag.Host = server.URL
-	flag.Token = ""
-	defer func() {
-		flag.Host = origHost
-		flag.Token = origToken
-	}()
-
-	args := map[string]any{
-		"owner":       owner,
-		"repo":        repo,
-		"pull_number": float64(pullNumber),
-	}
-
-	result, err := listPullRequestActionRunsFn(context.Background(), args)
-	if err != nil {
-		t.Fatalf("listPullRequestActionRunsFn() error = %v", err)
-	}
-	if result.IsError {
-		t.Fatalf("listPullRequestActionRunsFn() returned error result: %+v", result)
-	}
-
-	if gotRunsQuery == "" {
-		t.Fatalf("expected actions/runs to be called")
-	}
-	values, err := url.ParseQuery(gotRunsQuery)
-	if err != nil {
-		t.Fatalf("parse actions/runs query: %v", err)
-	}
-	if got := values.Get("head_sha"); got != headSHA {
-		t.Fatalf("actions/runs head_sha = %q, want %q", got, headSHA)
-	}
-
-	if len(result.Content) == 0 {
-		t.Fatalf("expected content in result")
-	}
-	textContent, ok := result.Content[0].(*mcp.TextContent)
-	if !ok {
-		t.Fatalf("expected text content, got %T", result.Content[0])
-	}
-
-	var parsed struct {
-		WorkflowRuns []map[string]any `json:"workflow_runs"`
-	}
-	if err := json.Unmarshal([]byte(textContent.Text), &parsed); err != nil {
-		t.Fatalf("unmarshal result text: %v", err)
-	}
-	if len(parsed.WorkflowRuns) != 1 {
-		t.Fatalf("expected 1 run, got %d", len(parsed.WorkflowRuns))
-	}
-	if got := parsed.WorkflowRuns[0]["name"]; got != "CI" {
-		t.Fatalf("run name = %v, want %q", got, "CI")
-	}
-}

operation/actions/runs.go

@@ -29,16 +29,15 @@ var (
 		ActionsRunReadToolName,
 		"Read Actions workflows, runs, jobs, logs, and artifacts.",
 		annotation.ReadOnly("Read Actions workflow, run, job, and artifact data"),
-		tool.String("method", tool.Required(), tool.Enum("list_workflows", "get_workflow", "list_runs", "get_run", "list_pr_runs", "list_jobs", "list_run_jobs", "get_job", "get_job_log_preview", "download_job_log", "list_artifacts", "list_run_artifacts", "get_artifact", "download_artifact")),
+		tool.String("method", tool.Required(), tool.Enum("list_workflows", "get_workflow", "list_runs", "get_run", "list_jobs", "list_run_jobs", "get_job", "get_job_log_preview", "download_job_log", "list_artifacts", "list_run_artifacts", "get_artifact", "download_artifact")),
 		tool.String("owner", tool.Required(), tool.Description(params.OwnerDesc)),
 		tool.String("repo", tool.Required(), tool.Description(params.RepoDesc)),
 		tool.String("workflow_id", tool.Description("ID or filename (for 'get_workflow')")),
 		tool.Number("run_id", tool.Description("for 'get_run'/'list_run_jobs'/'list_run_artifacts'")),
-		tool.Number("pull_number", tool.Description("pull request number (for 'list_pr_runs')")),
 		tool.Number("job_id", tool.Description("for 'get_job'/log methods")),
 		tool.Number("artifact_id", tool.Description("for 'get_artifact'/'download_artifact'")),
 		tool.String("artifact_name", tool.Description("name filter for 'list_artifacts'/'list_run_artifacts'")),
-		tool.String("status", tool.Description("filter for 'list_runs'/'list_pr_runs'/'list_jobs'")),
+		tool.String("status", tool.Description("filter for 'list_runs'/'list_jobs'")),
 		tool.Number("tail_lines", tool.Description("log tail lines"), tool.Default(200), tool.Minimum(1)),
 		tool.Number("max_bytes", tool.Description("max log bytes"), tool.Default(65536), tool.Minimum(1024)),
 		tool.String("output_path", tool.Description("for 'download_job_log'/'download_artifact'")),
@@ -79,8 +78,6 @@ func runReadFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, e
 		return listRepoActionRunsFn(ctx, args)
 	case "get_run":
 		return getRepoActionRunFn(ctx, args)
-	case "list_pr_runs":
-		return listPullRequestActionRunsFn(ctx, args)
 	case "list_jobs":
 		return listRepoActionJobsFn(ctx, args)
 	case "list_run_jobs":
@@ -300,61 +297,6 @@ func getRepoActionRunFn(ctx context.Context, args map[string]any) (*mcp.CallTool
 	return to.TextResult(slimActionRun(result))
 }
 
-func listPullRequestActionRunsFn(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)
-	}
-	pullNumber, err := params.GetIndex(args, "pull_number")
-	if err != nil || pullNumber <= 0 {
-		return to.ErrorResult(errors.New("pull_number is required"))
-	}
-	page, pageSize := params.GetPagination(args, 30)
-	statusFilter, _ := args["status"].(string)
-
-	var pull struct {
-		Head struct {
-			SHA string `json:"sha"`
-		} `json:"head"`
-	}
-	err = doJSONWithFallback(ctx, "GET",
-		[]string{
-			fmt.Sprintf("repos/%s/%s/pulls/%d", url.PathEscape(owner), url.PathEscape(repo), pullNumber),
-		},
-		nil, nil, &pull,
-	)
-	if err != nil {
-		return to.ErrorResult(fmt.Errorf("get pull request err: %v", err))
-	}
-	if pull.Head.SHA == "" {
-		return to.ErrorResult(fmt.Errorf("pull request %d has no head sha", pullNumber))
-	}
-
-	query := url.Values{}
-	query.Set("head_sha", pull.Head.SHA)
-	query.Set("page", strconv.Itoa(page))
-	query.Set("limit", strconv.Itoa(pageSize))
-	if statusFilter != "" {
-		query.Set("status", statusFilter)
-	}
-
-	var result any
-	err = doJSONWithFallback(ctx, "GET",
-		[]string{
-			fmt.Sprintf("repos/%s/%s/actions/runs", url.PathEscape(owner), url.PathEscape(repo)),
-		},
-		query, nil, &result,
-	)
-	if err != nil {
-		return to.ErrorResult(fmt.Errorf("list pull request action runs err: %v", err))
-	}
-	return to.TextResult(slimActionRuns(result))
-}
-
 func cancelRepoActionRunFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
 	owner, err := params.GetString(args, "owner")
 	if err != nil {

operation/issue/issue.go

@@ -55,9 +55,9 @@ var (
 
 	IssueReadTool = tool.NewDefinition(
 		IssueReadToolName,
-		"Read issue: details, comments, or labels.",
+		"Read issue: details, comments, labels, or the full discussion as Markdown.",
 		annotation.ReadOnly("Read issue details"),
-		tool.String("method", tool.Required(), tool.Enum("get", "get_comments", "get_labels")),
+		tool.String("method", tool.Required(), tool.Enum("get", "get_comments", "get_labels", "get_discussion_markdown")),
 		tool.String("owner", tool.Required(), tool.Description(params.OwnerDesc)),
 		tool.String("repo", tool.Required(), tool.Description(params.RepoDesc)),
 		tool.Number("issue_number", tool.Required()),
@@ -112,6 +112,8 @@ func issueReadFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult,
 		return getIssueCommentsByIndexFn(ctx, args)
 	case "get_labels":
 		return getIssueLabelsFn(ctx, args)
+	case "get_discussion_markdown":
+		return getIssueDiscussionMarkdownFn(ctx, args)
 	default:
 		return to.ErrorResult(fmt.Errorf("unknown method: %s", method))
 	}
@@ -398,6 +400,54 @@ func getIssueCommentsByIndexFn(ctx context.Context, args map[string]any) (*mcp.C
 	return to.TextResult(out)
 }
 
+func getIssueDiscussionMarkdownFn(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, "issue_number")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+
+	var issue issueWithAssets
+	issuePath := fmt.Sprintf("repos/%s/%s/issues/%d", url.PathEscape(owner), url.PathEscape(repo), index)
+	if _, err := gitea.DoJSON(ctx, "GET", issuePath, nil, nil, &issue); err != nil {
+		return to.ErrorResult(fmt.Errorf("get %v/%v/issue/%v err: %v", owner, repo, index, err))
+	}
+
+	var comments []commentWithAssets
+	commentsPath := fmt.Sprintf("repos/%s/%s/issues/%d/comments", url.PathEscape(owner), url.PathEscape(repo), index)
+	if _, err := gitea.DoJSON(ctx, "GET", commentsPath, nil, nil, &comments); err != nil {
+		return to.ErrorResult(fmt.Errorf("get %v/%v/issues/%v/comments err: %v", owner, repo, index, err))
+	}
+
+	discComments := make([]discussionComment, 0, len(comments))
+	for i := range comments {
+		discComments = append(discComments, discussionComment{
+			Author:    slim.UserLogin(comments[i].Poster),
+			CreatedAt: comments[i].Created,
+			Body:      slim.BodyWithAttachments(comments[i].Body, comments[i].Assets),
+		})
+	}
+
+	md := formatDiscussionMarkdown(discussionIssue{
+		Number:    issue.Index,
+		Title:     issue.Title,
+		Author:    slim.UserLogin(issue.Poster),
+		State:     string(issue.State),
+		Labels:    slim.LabelNames(issue.Labels),
+		Body:      slim.BodyWithAttachments(issue.Body, issue.Assets),
+		CreatedAt: issue.Created,
+	}, discComments)
+
+	return to.RawTextResult(md)
+}
+
 func getIssueLabelsFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
 	owner, err := params.GetString(args, "owner")
 	if err != nil {

operation/issue/issue_test.go

@@ -266,6 +266,119 @@ func Test_getIssueByIndexFn_includesAttachments(t *testing.T) {
 	}
 }
 
+func Test_getIssueDiscussionMarkdownFn(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+	)
+
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/version":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{"version":"1.12.0"}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/issues/42", owner, repo):
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{
+				"number": 42,
+				"title": "bug with screenshot",
+				"body": "see attached",
+				"state": "open",
+				"user": {"login": "octocat"},
+				"labels": [{"name": "bug"}],
+				"created_at": "2026-01-02T15:04:05Z",
+				"assets": [
+					{"id": 1, "name": "shot.png", "size": 1024, "browser_download_url": "https://example/shot.png"}
+				]
+			}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/issues/42/comments", owner, repo):
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`[
+				{"id": 1, "body": "see this", "user": {"login": "reviewer"}, "created_at": "2026-01-03T09:00:00Z", "assets": [
+					{"id": 9, "name": "log.txt", "size": 200, "browser_download_url": "https://example/log.txt"}
+				]}
+			]`))
+		default:
+			http.NotFound(w, r)
+		}
+	})
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	origHost, origToken, origVersion := flag.Host, flag.Token, flag.Version
+	flag.Host, flag.Token, flag.Version = server.URL, "", "test"
+	defer func() { flag.Host, flag.Token, flag.Version = origHost, origToken, origVersion }()
+
+	args := map[string]any{
+		"owner": owner, "repo": repo, "issue_number": float64(42),
+	}
+	res, err := getIssueDiscussionMarkdownFn(context.Background(), args)
+	if err != nil {
+		t.Fatalf("getIssueDiscussionMarkdownFn() error = %v", err)
+	}
+	if res.IsError {
+		t.Fatalf("unexpected error result: %v", res.Content)
+	}
+	body := res.Content[0].(*mcp.TextContent).Text
+	for _, want := range []string{
+		"# bug with screenshot (#42)",
+		"**Author:** octocat",
+		"**State:** open",
+		"**Labels:** bug",
+		"[shot.png](https://example/shot.png)",
+		"### reviewer on 2026-01-03T09:00:00Z",
+		"[log.txt](https://example/log.txt)",
+	} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("expected markdown to contain %q, got:\n%s", want, body)
+		}
+	}
+}
+
+func Test_getIssueDiscussionMarkdownFn_noComments(t *testing.T) {
+	const (
+		owner = "octo"
+		repo  = "demo"
+	)
+
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/version":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{"version":"1.12.0"}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/issues/7", owner, repo):
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`{"number": 7, "title": "quiet issue", "state": "open", "user": {"login": "octocat"}}`))
+		case fmt.Sprintf("/api/v1/repos/%s/%s/issues/7/comments", owner, repo):
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(`[]`))
+		default:
+			http.NotFound(w, r)
+		}
+	})
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	origHost, origToken, origVersion := flag.Host, flag.Token, flag.Version
+	flag.Host, flag.Token, flag.Version = server.URL, "", "test"
+	defer func() { flag.Host, flag.Token, flag.Version = origHost, origToken, origVersion }()
+
+	args := map[string]any{
+		"owner": owner, "repo": repo, "issue_number": float64(7),
+	}
+	res, err := getIssueDiscussionMarkdownFn(context.Background(), args)
+	if err != nil {
+		t.Fatalf("getIssueDiscussionMarkdownFn() error = %v", err)
+	}
+	if res.IsError {
+		t.Fatalf("unexpected error result: %v", res.Content)
+	}
+	body := res.Content[0].(*mcp.TextContent).Text
+	if !strings.Contains(body, "_No comments yet._") {
+		t.Fatalf("expected placeholder for no comments, got:\n%s", body)
+	}
+}
+
 func Test_getIssueCommentsByIndexFn_includesAttachments(t *testing.T) {
 	const (
 		owner = "octo"

operation/issue/markdown.go

@@ -0,0 +1,63 @@
+package issue
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+type discussionIssue struct {
+	Number    int64
+	Title     string
+	Author    string
+	State     string
+	Labels    []string
+	Body      string
+	CreatedAt time.Time
+}
+
+type discussionComment struct {
+	Author    string
+	CreatedAt time.Time
+	Body      string
+}
+
+// formatDiscussionMarkdown renders an issue and its comments as a single
+// Markdown document suitable for display without further parsing.
+func formatDiscussionMarkdown(issue discussionIssue, comments []discussionComment) string {
+	var b strings.Builder
+
+	fmt.Fprintf(&b, "# %s (#%d)\n\n", issue.Title, issue.Number)
+	fmt.Fprintf(&b, "**Author:** %s\n", issue.Author)
+	fmt.Fprintf(&b, "**State:** %s\n", issue.State)
+	if len(issue.Labels) > 0 {
+		fmt.Fprintf(&b, "**Labels:** %s\n", strings.Join(issue.Labels, ", "))
+	}
+	if !issue.CreatedAt.IsZero() {
+		fmt.Fprintf(&b, "**Created:** %s\n", issue.CreatedAt.UTC().Format(time.RFC3339))
+	}
+	b.WriteString("\n")
+	b.WriteString(strings.TrimSpace(issue.Body))
+	b.WriteString("\n\n---\n\n## Comments\n\n")
+
+	if len(comments) == 0 {
+		b.WriteString("_No comments yet._\n")
+		return b.String()
+	}
+
+	for i, c := range comments {
+		fmt.Fprintf(&b, "### %s", c.Author)
+		if !c.CreatedAt.IsZero() {
+			fmt.Fprintf(&b, " on %s", c.CreatedAt.UTC().Format(time.RFC3339))
+		}
+		b.WriteString("\n\n")
+		b.WriteString(strings.TrimSpace(c.Body))
+		if i < len(comments)-1 {
+			b.WriteString("\n\n---\n\n")
+		} else {
+			b.WriteString("\n")
+		}
+	}
+
+	return b.String()
+}

operation/issue/markdown_test.go

@@ -0,0 +1,85 @@
+package issue
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func Test_formatDiscussionMarkdown_includesIssueAndComments(t *testing.T) {
+	created := time.Date(2026, 1, 2, 15, 4, 5, 0, time.UTC)
+	commentTime := time.Date(2026, 1, 3, 9, 0, 0, 0, time.UTC)
+	md := formatDiscussionMarkdown(
+		discussionIssue{
+			Number:    42,
+			Title:     "bug with screenshot",
+			Author:    "octocat",
+			State:     "open",
+			Labels:    []string{"bug", "help wanted"},
+			Body:      "see attached",
+			CreatedAt: created,
+		},
+		[]discussionComment{
+			{Author: "reviewer", CreatedAt: commentTime, Body: "thanks for reporting"},
+		},
+	)
+
+	wantSubstrings := []string{
+		"# bug with screenshot (#42)",
+		"**Author:** octocat",
+		"**State:** open",
+		"**Labels:** bug, help wanted",
+		"**Created:** 2026-01-02T15:04:05Z",
+		"see attached",
+		"## Comments",
+		"### reviewer",
+		"2026-01-03T09:00:00Z",
+		"thanks for reporting",
+	}
+	for _, want := range wantSubstrings {
+		if !strings.Contains(md, want) {
+			t.Fatalf("expected markdown to contain %q, got:\n%s", want, md)
+		}
+	}
+}
+
+func Test_formatDiscussionMarkdown_noComments(t *testing.T) {
+	md := formatDiscussionMarkdown(
+		discussionIssue{
+			Number: 1,
+			Title:  "no comments yet",
+			Author: "octocat",
+			State:  "open",
+		},
+		nil,
+	)
+
+	if !strings.Contains(md, "## Comments") {
+		t.Fatalf("expected a Comments section, got:\n%s", md)
+	}
+	if !strings.Contains(md, "_No comments yet._") {
+		t.Fatalf("expected placeholder for no comments, got:\n%s", md)
+	}
+}
+
+func Test_formatDiscussionMarkdown_attachmentBodyIsInlined(t *testing.T) {
+	md := formatDiscussionMarkdown(
+		discussionIssue{
+			Number: 7,
+			Title:  "with attachment",
+			Author: "octocat",
+			State:  "open",
+			Body:   "see attached\n\n[shot.png](https://example/shot.png)",
+		},
+		[]discussionComment{
+			{Author: "reviewer", Body: "log attached\n\n[log.txt](https://example/log.txt)"},
+		},
+	)
+
+	if !strings.Contains(md, "[shot.png](https://example/shot.png)") {
+		t.Fatalf("expected issue attachment link in markdown, got:\n%s", md)
+	}
+	if !strings.Contains(md, "[log.txt](https://example/log.txt)") {
+		t.Fatalf("expected comment attachment link in markdown, got:\n%s", md)
+	}
+}

pkg/to/to.go

@@ -23,6 +23,17 @@ func TextResult(v any) (*mcp.CallToolResult, error) {
 	}, nil
 }
 
+// RawTextResult returns text as-is, without JSON-encoding it. Use it for
+// content that is already meant to be read directly, such as Markdown.
+func RawTextResult(text string) (*mcp.CallToolResult, error) {
+	if flag.Debug {
+		log.Debugf("Text Result: %s", text)
+	}
+	return &mcp.CallToolResult{
+		Content: []mcp.Content{&mcp.TextContent{Text: text}},
+	}, nil
+}
+
 func ErrorResult(err error) (*mcp.CallToolResult, error) {
 	log.Errorf("%s", err.Error())
 	var result mcp.CallToolResult