diff --git a/pkg/cmd/discussion/client/client.go b/pkg/cmd/discussion/client/client.go
new file mode 100644
index 000000000..b698dc896
--- /dev/null
+++ b/pkg/cmd/discussion/client/client.go
@@ -0,0 +1,26 @@
+// Package client provides an abstraction layer for interacting with the
+// GitHub Discussions GraphQL API. The DiscussionClient interface defines all
+// supported operations and can be replaced with a mock in tests.
+package client
+
+import "github.com/cli/cli/v2/internal/ghrepo"
+
+//go:generate moq -rm -out client_mock.go . DiscussionClient
+
+// DiscussionClient defines operations for interacting with the GitHub Discussions API.
+type DiscussionClient interface {
+	List(repo ghrepo.Interface, filters ListFilters, limit int) ([]Discussion, int, error)
+	Search(repo ghrepo.Interface, filters SearchFilters, limit int) ([]Discussion, int, error)
+	GetByNumber(repo ghrepo.Interface, number int) (*Discussion, error)
+	GetWithComments(repo ghrepo.Interface, number int, commentLimit int, order string) (*Discussion, error)
+	ListCategories(repo ghrepo.Interface) ([]DiscussionCategory, error)
+	Create(repo ghrepo.Interface, input CreateDiscussionInput) (*Discussion, error)
+	Update(repo ghrepo.Interface, input UpdateDiscussionInput) (*Discussion, error)
+	Close(repo ghrepo.Interface, id string, reason CloseReason) (*Discussion, error)
+	Reopen(repo ghrepo.Interface, id string) (*Discussion, error)
+	AddComment(repo ghrepo.Interface, discussionID string, body string, replyToID string) (*DiscussionComment, error)
+	Lock(repo ghrepo.Interface, id string, reason string) error
+	Unlock(repo ghrepo.Interface, id string) error
+	MarkAnswer(repo ghrepo.Interface, commentID string) error
+	UnmarkAnswer(repo ghrepo.Interface, commentID string) error
+}
diff --git a/pkg/cmd/discussion/client/client_impl.go b/pkg/cmd/discussion/client/client_impl.go
new file mode 100644
index 000000000..e5db32dd5
--- /dev/null
+++ b/pkg/cmd/discussion/client/client_impl.go
@@ -0,0 +1,76 @@
+package client
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/cli/cli/v2/api"
+	"github.com/cli/cli/v2/internal/ghrepo"
+)
+
+type discussionClient struct {
+	gql *api.Client
+}
+
+// NewDiscussionClient creates a DiscussionClient backed by the given HTTP client.
+func NewDiscussionClient(httpClient *http.Client) DiscussionClient {
+	return &discussionClient{
+		gql: api.NewClientFromHTTP(httpClient),
+	}
+}
+
+func (c *discussionClient) List(_ ghrepo.Interface, _ ListFilters, _ int) ([]Discussion, int, error) {
+	return nil, 0, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Search(_ ghrepo.Interface, _ SearchFilters, _ int) ([]Discussion, int, error) {
+	return nil, 0, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) GetByNumber(_ ghrepo.Interface, _ int) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) GetWithComments(_ ghrepo.Interface, _ int, _ int, _ string) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) ListCategories(_ ghrepo.Interface) ([]DiscussionCategory, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Create(_ ghrepo.Interface, _ CreateDiscussionInput) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Update(_ ghrepo.Interface, _ UpdateDiscussionInput) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Close(_ ghrepo.Interface, _ string, _ CloseReason) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Reopen(_ ghrepo.Interface, _ string) (*Discussion, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) AddComment(_ ghrepo.Interface, _ string, _ string, _ string) (*DiscussionComment, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Lock(_ ghrepo.Interface, _ string, _ string) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) Unlock(_ ghrepo.Interface, _ string) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) MarkAnswer(_ ghrepo.Interface, _ string) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (c *discussionClient) UnmarkAnswer(_ ghrepo.Interface, _ string) error {
+	return fmt.Errorf("not implemented")
+}
diff --git a/pkg/cmd/discussion/client/client_mock.go b/pkg/cmd/discussion/client/client_mock.go
new file mode 100644
index 000000000..4f8227d5f
--- /dev/null
+++ b/pkg/cmd/discussion/client/client_mock.go
@@ -0,0 +1,773 @@
+// Code generated by moq; DO NOT EDIT.
+// github.com/matryer/moq
+
+package client
+
+import (
+	"github.com/cli/cli/v2/internal/ghrepo"
+	"sync"
+)
+
+// Ensure, that DiscussionClientMock does implement DiscussionClient.
+// If this is not the case, regenerate this file with moq.
+var _ DiscussionClient = &DiscussionClientMock{}
+
+// DiscussionClientMock is a mock implementation of DiscussionClient.
+//
+//	func TestSomethingThatUsesDiscussionClient(t *testing.T) {
+//
+//		// make and configure a mocked DiscussionClient
+//		mockedDiscussionClient := &DiscussionClientMock{
+//			AddCommentFunc: func(repo ghrepo.Interface, discussionID string, body string, replyToID string) (*DiscussionComment, error) {
+//				panic("mock out the AddComment method")
+//			},
+//			CloseFunc: func(repo ghrepo.Interface, id string, reason CloseReason) (*Discussion, error) {
+//				panic("mock out the Close method")
+//			},
+//			CreateFunc: func(repo ghrepo.Interface, input CreateDiscussionInput) (*Discussion, error) {
+//				panic("mock out the Create method")
+//			},
+//			GetByNumberFunc: func(repo ghrepo.Interface, number int) (*Discussion, error) {
+//				panic("mock out the GetByNumber method")
+//			},
+//			GetWithCommentsFunc: func(repo ghrepo.Interface, number int, commentLimit int, order string) (*Discussion, error) {
+//				panic("mock out the GetWithComments method")
+//			},
+//			ListFunc: func(repo ghrepo.Interface, filters ListFilters, limit int) ([]Discussion, int, error) {
+//				panic("mock out the List method")
+//			},
+//			ListCategoriesFunc: func(repo ghrepo.Interface) ([]DiscussionCategory, error) {
+//				panic("mock out the ListCategories method")
+//			},
+//			LockFunc: func(repo ghrepo.Interface, id string, reason string) error {
+//				panic("mock out the Lock method")
+//			},
+//			MarkAnswerFunc: func(repo ghrepo.Interface, commentID string) error {
+//				panic("mock out the MarkAnswer method")
+//			},
+//			ReopenFunc: func(repo ghrepo.Interface, id string) (*Discussion, error) {
+//				panic("mock out the Reopen method")
+//			},
+//			SearchFunc: func(repo ghrepo.Interface, filters SearchFilters, limit int) ([]Discussion, int, error) {
+//				panic("mock out the Search method")
+//			},
+//			UnlockFunc: func(repo ghrepo.Interface, id string) error {
+//				panic("mock out the Unlock method")
+//			},
+//			UnmarkAnswerFunc: func(repo ghrepo.Interface, commentID string) error {
+//				panic("mock out the UnmarkAnswer method")
+//			},
+//			UpdateFunc: func(repo ghrepo.Interface, input UpdateDiscussionInput) (*Discussion, error) {
+//				panic("mock out the Update method")
+//			},
+//		}
+//
+//		// use mockedDiscussionClient in code that requires DiscussionClient
+//		// and then make assertions.
+//
+//	}
+type DiscussionClientMock struct {
+	// AddCommentFunc mocks the AddComment method.
+	AddCommentFunc func(repo ghrepo.Interface, discussionID string, body string, replyToID string) (*DiscussionComment, error)
+
+	// CloseFunc mocks the Close method.
+	CloseFunc func(repo ghrepo.Interface, id string, reason CloseReason) (*Discussion, error)
+
+	// CreateFunc mocks the Create method.
+	CreateFunc func(repo ghrepo.Interface, input CreateDiscussionInput) (*Discussion, error)
+
+	// GetByNumberFunc mocks the GetByNumber method.
+	GetByNumberFunc func(repo ghrepo.Interface, number int) (*Discussion, error)
+
+	// GetWithCommentsFunc mocks the GetWithComments method.
+	GetWithCommentsFunc func(repo ghrepo.Interface, number int, commentLimit int, order string) (*Discussion, error)
+
+	// ListFunc mocks the List method.
+	ListFunc func(repo ghrepo.Interface, filters ListFilters, limit int) ([]Discussion, int, error)
+
+	// ListCategoriesFunc mocks the ListCategories method.
+	ListCategoriesFunc func(repo ghrepo.Interface) ([]DiscussionCategory, error)
+
+	// LockFunc mocks the Lock method.
+	LockFunc func(repo ghrepo.Interface, id string, reason string) error
+
+	// MarkAnswerFunc mocks the MarkAnswer method.
+	MarkAnswerFunc func(repo ghrepo.Interface, commentID string) error
+
+	// ReopenFunc mocks the Reopen method.
+	ReopenFunc func(repo ghrepo.Interface, id string) (*Discussion, error)
+
+	// SearchFunc mocks the Search method.
+	SearchFunc func(repo ghrepo.Interface, filters SearchFilters, limit int) ([]Discussion, int, error)
+
+	// UnlockFunc mocks the Unlock method.
+	UnlockFunc func(repo ghrepo.Interface, id string) error
+
+	// UnmarkAnswerFunc mocks the UnmarkAnswer method.
+	UnmarkAnswerFunc func(repo ghrepo.Interface, commentID string) error
+
+	// UpdateFunc mocks the Update method.
+	UpdateFunc func(repo ghrepo.Interface, input UpdateDiscussionInput) (*Discussion, error)
+
+	// calls tracks calls to the methods.
+	calls struct {
+		// AddComment holds details about calls to the AddComment method.
+		AddComment []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// DiscussionID is the discussionID argument value.
+			DiscussionID string
+			// Body is the body argument value.
+			Body string
+			// ReplyToID is the replyToID argument value.
+			ReplyToID string
+		}
+		// Close holds details about calls to the Close method.
+		Close []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// ID is the id argument value.
+			ID string
+			// Reason is the reason argument value.
+			Reason CloseReason
+		}
+		// Create holds details about calls to the Create method.
+		Create []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Input is the input argument value.
+			Input CreateDiscussionInput
+		}
+		// GetByNumber holds details about calls to the GetByNumber method.
+		GetByNumber []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Number is the number argument value.
+			Number int
+		}
+		// GetWithComments holds details about calls to the GetWithComments method.
+		GetWithComments []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Number is the number argument value.
+			Number int
+			// CommentLimit is the commentLimit argument value.
+			CommentLimit int
+			// Order is the order argument value.
+			Order string
+		}
+		// List holds details about calls to the List method.
+		List []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Filters is the filters argument value.
+			Filters ListFilters
+			// Limit is the limit argument value.
+			Limit int
+		}
+		// ListCategories holds details about calls to the ListCategories method.
+		ListCategories []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+		}
+		// Lock holds details about calls to the Lock method.
+		Lock []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// ID is the id argument value.
+			ID string
+			// Reason is the reason argument value.
+			Reason string
+		}
+		// MarkAnswer holds details about calls to the MarkAnswer method.
+		MarkAnswer []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// CommentID is the commentID argument value.
+			CommentID string
+		}
+		// Reopen holds details about calls to the Reopen method.
+		Reopen []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// ID is the id argument value.
+			ID string
+		}
+		// Search holds details about calls to the Search method.
+		Search []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Filters is the filters argument value.
+			Filters SearchFilters
+			// Limit is the limit argument value.
+			Limit int
+		}
+		// Unlock holds details about calls to the Unlock method.
+		Unlock []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// ID is the id argument value.
+			ID string
+		}
+		// UnmarkAnswer holds details about calls to the UnmarkAnswer method.
+		UnmarkAnswer []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// CommentID is the commentID argument value.
+			CommentID string
+		}
+		// Update holds details about calls to the Update method.
+		Update []struct {
+			// Repo is the repo argument value.
+			Repo ghrepo.Interface
+			// Input is the input argument value.
+			Input UpdateDiscussionInput
+		}
+	}
+	lockAddComment      sync.RWMutex
+	lockClose           sync.RWMutex
+	lockCreate          sync.RWMutex
+	lockGetByNumber     sync.RWMutex
+	lockGetWithComments sync.RWMutex
+	lockList            sync.RWMutex
+	lockListCategories  sync.RWMutex
+	lockLock            sync.RWMutex
+	lockMarkAnswer      sync.RWMutex
+	lockReopen          sync.RWMutex
+	lockSearch          sync.RWMutex
+	lockUnlock          sync.RWMutex
+	lockUnmarkAnswer    sync.RWMutex
+	lockUpdate          sync.RWMutex
+}
+
+// AddComment calls AddCommentFunc.
+func (mock *DiscussionClientMock) AddComment(repo ghrepo.Interface, discussionID string, body string, replyToID string) (*DiscussionComment, error) {
+	if mock.AddCommentFunc == nil {
+		panic("DiscussionClientMock.AddCommentFunc: method is nil but DiscussionClient.AddComment was just called")
+	}
+	callInfo := struct {
+		Repo         ghrepo.Interface
+		DiscussionID string
+		Body         string
+		ReplyToID    string
+	}{
+		Repo:         repo,
+		DiscussionID: discussionID,
+		Body:         body,
+		ReplyToID:    replyToID,
+	}
+	mock.lockAddComment.Lock()
+	mock.calls.AddComment = append(mock.calls.AddComment, callInfo)
+	mock.lockAddComment.Unlock()
+	return mock.AddCommentFunc(repo, discussionID, body, replyToID)
+}
+
+// AddCommentCalls gets all the calls that were made to AddComment.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.AddCommentCalls())
+func (mock *DiscussionClientMock) AddCommentCalls() []struct {
+	Repo         ghrepo.Interface
+	DiscussionID string
+	Body         string
+	ReplyToID    string
+} {
+	var calls []struct {
+		Repo         ghrepo.Interface
+		DiscussionID string
+		Body         string
+		ReplyToID    string
+	}
+	mock.lockAddComment.RLock()
+	calls = mock.calls.AddComment
+	mock.lockAddComment.RUnlock()
+	return calls
+}
+
+// Close calls CloseFunc.
+func (mock *DiscussionClientMock) Close(repo ghrepo.Interface, id string, reason CloseReason) (*Discussion, error) {
+	if mock.CloseFunc == nil {
+		panic("DiscussionClientMock.CloseFunc: method is nil but DiscussionClient.Close was just called")
+	}
+	callInfo := struct {
+		Repo   ghrepo.Interface
+		ID     string
+		Reason CloseReason
+	}{
+		Repo:   repo,
+		ID:     id,
+		Reason: reason,
+	}
+	mock.lockClose.Lock()
+	mock.calls.Close = append(mock.calls.Close, callInfo)
+	mock.lockClose.Unlock()
+	return mock.CloseFunc(repo, id, reason)
+}
+
+// CloseCalls gets all the calls that were made to Close.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.CloseCalls())
+func (mock *DiscussionClientMock) CloseCalls() []struct {
+	Repo   ghrepo.Interface
+	ID     string
+	Reason CloseReason
+} {
+	var calls []struct {
+		Repo   ghrepo.Interface
+		ID     string
+		Reason CloseReason
+	}
+	mock.lockClose.RLock()
+	calls = mock.calls.Close
+	mock.lockClose.RUnlock()
+	return calls
+}
+
+// Create calls CreateFunc.
+func (mock *DiscussionClientMock) Create(repo ghrepo.Interface, input CreateDiscussionInput) (*Discussion, error) {
+	if mock.CreateFunc == nil {
+		panic("DiscussionClientMock.CreateFunc: method is nil but DiscussionClient.Create was just called")
+	}
+	callInfo := struct {
+		Repo  ghrepo.Interface
+		Input CreateDiscussionInput
+	}{
+		Repo:  repo,
+		Input: input,
+	}
+	mock.lockCreate.Lock()
+	mock.calls.Create = append(mock.calls.Create, callInfo)
+	mock.lockCreate.Unlock()
+	return mock.CreateFunc(repo, input)
+}
+
+// CreateCalls gets all the calls that were made to Create.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.CreateCalls())
+func (mock *DiscussionClientMock) CreateCalls() []struct {
+	Repo  ghrepo.Interface
+	Input CreateDiscussionInput
+} {
+	var calls []struct {
+		Repo  ghrepo.Interface
+		Input CreateDiscussionInput
+	}
+	mock.lockCreate.RLock()
+	calls = mock.calls.Create
+	mock.lockCreate.RUnlock()
+	return calls
+}
+
+// GetByNumber calls GetByNumberFunc.
+func (mock *DiscussionClientMock) GetByNumber(repo ghrepo.Interface, number int) (*Discussion, error) {
+	if mock.GetByNumberFunc == nil {
+		panic("DiscussionClientMock.GetByNumberFunc: method is nil but DiscussionClient.GetByNumber was just called")
+	}
+	callInfo := struct {
+		Repo   ghrepo.Interface
+		Number int
+	}{
+		Repo:   repo,
+		Number: number,
+	}
+	mock.lockGetByNumber.Lock()
+	mock.calls.GetByNumber = append(mock.calls.GetByNumber, callInfo)
+	mock.lockGetByNumber.Unlock()
+	return mock.GetByNumberFunc(repo, number)
+}
+
+// GetByNumberCalls gets all the calls that were made to GetByNumber.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.GetByNumberCalls())
+func (mock *DiscussionClientMock) GetByNumberCalls() []struct {
+	Repo   ghrepo.Interface
+	Number int
+} {
+	var calls []struct {
+		Repo   ghrepo.Interface
+		Number int
+	}
+	mock.lockGetByNumber.RLock()
+	calls = mock.calls.GetByNumber
+	mock.lockGetByNumber.RUnlock()
+	return calls
+}
+
+// GetWithComments calls GetWithCommentsFunc.
+func (mock *DiscussionClientMock) GetWithComments(repo ghrepo.Interface, number int, commentLimit int, order string) (*Discussion, error) {
+	if mock.GetWithCommentsFunc == nil {
+		panic("DiscussionClientMock.GetWithCommentsFunc: method is nil but DiscussionClient.GetWithComments was just called")
+	}
+	callInfo := struct {
+		Repo         ghrepo.Interface
+		Number       int
+		CommentLimit int
+		Order        string
+	}{
+		Repo:         repo,
+		Number:       number,
+		CommentLimit: commentLimit,
+		Order:        order,
+	}
+	mock.lockGetWithComments.Lock()
+	mock.calls.GetWithComments = append(mock.calls.GetWithComments, callInfo)
+	mock.lockGetWithComments.Unlock()
+	return mock.GetWithCommentsFunc(repo, number, commentLimit, order)
+}
+
+// GetWithCommentsCalls gets all the calls that were made to GetWithComments.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.GetWithCommentsCalls())
+func (mock *DiscussionClientMock) GetWithCommentsCalls() []struct {
+	Repo         ghrepo.Interface
+	Number       int
+	CommentLimit int
+	Order        string
+} {
+	var calls []struct {
+		Repo         ghrepo.Interface
+		Number       int
+		CommentLimit int
+		Order        string
+	}
+	mock.lockGetWithComments.RLock()
+	calls = mock.calls.GetWithComments
+	mock.lockGetWithComments.RUnlock()
+	return calls
+}
+
+// List calls ListFunc.
+func (mock *DiscussionClientMock) List(repo ghrepo.Interface, filters ListFilters, limit int) ([]Discussion, int, error) {
+	if mock.ListFunc == nil {
+		panic("DiscussionClientMock.ListFunc: method is nil but DiscussionClient.List was just called")
+	}
+	callInfo := struct {
+		Repo    ghrepo.Interface
+		Filters ListFilters
+		Limit   int
+	}{
+		Repo:    repo,
+		Filters: filters,
+		Limit:   limit,
+	}
+	mock.lockList.Lock()
+	mock.calls.List = append(mock.calls.List, callInfo)
+	mock.lockList.Unlock()
+	return mock.ListFunc(repo, filters, limit)
+}
+
+// ListCalls gets all the calls that were made to List.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.ListCalls())
+func (mock *DiscussionClientMock) ListCalls() []struct {
+	Repo    ghrepo.Interface
+	Filters ListFilters
+	Limit   int
+} {
+	var calls []struct {
+		Repo    ghrepo.Interface
+		Filters ListFilters
+		Limit   int
+	}
+	mock.lockList.RLock()
+	calls = mock.calls.List
+	mock.lockList.RUnlock()
+	return calls
+}
+
+// ListCategories calls ListCategoriesFunc.
+func (mock *DiscussionClientMock) ListCategories(repo ghrepo.Interface) ([]DiscussionCategory, error) {
+	if mock.ListCategoriesFunc == nil {
+		panic("DiscussionClientMock.ListCategoriesFunc: method is nil but DiscussionClient.ListCategories was just called")
+	}
+	callInfo := struct {
+		Repo ghrepo.Interface
+	}{
+		Repo: repo,
+	}
+	mock.lockListCategories.Lock()
+	mock.calls.ListCategories = append(mock.calls.ListCategories, callInfo)
+	mock.lockListCategories.Unlock()
+	return mock.ListCategoriesFunc(repo)
+}
+
+// ListCategoriesCalls gets all the calls that were made to ListCategories.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.ListCategoriesCalls())
+func (mock *DiscussionClientMock) ListCategoriesCalls() []struct {
+	Repo ghrepo.Interface
+} {
+	var calls []struct {
+		Repo ghrepo.Interface
+	}
+	mock.lockListCategories.RLock()
+	calls = mock.calls.ListCategories
+	mock.lockListCategories.RUnlock()
+	return calls
+}
+
+// Lock calls LockFunc.
+func (mock *DiscussionClientMock) Lock(repo ghrepo.Interface, id string, reason string) error {
+	if mock.LockFunc == nil {
+		panic("DiscussionClientMock.LockFunc: method is nil but DiscussionClient.Lock was just called")
+	}
+	callInfo := struct {
+		Repo   ghrepo.Interface
+		ID     string
+		Reason string
+	}{
+		Repo:   repo,
+		ID:     id,
+		Reason: reason,
+	}
+	mock.lockLock.Lock()
+	mock.calls.Lock = append(mock.calls.Lock, callInfo)
+	mock.lockLock.Unlock()
+	return mock.LockFunc(repo, id, reason)
+}
+
+// LockCalls gets all the calls that were made to Lock.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.LockCalls())
+func (mock *DiscussionClientMock) LockCalls() []struct {
+	Repo   ghrepo.Interface
+	ID     string
+	Reason string
+} {
+	var calls []struct {
+		Repo   ghrepo.Interface
+		ID     string
+		Reason string
+	}
+	mock.lockLock.RLock()
+	calls = mock.calls.Lock
+	mock.lockLock.RUnlock()
+	return calls
+}
+
+// MarkAnswer calls MarkAnswerFunc.
+func (mock *DiscussionClientMock) MarkAnswer(repo ghrepo.Interface, commentID string) error {
+	if mock.MarkAnswerFunc == nil {
+		panic("DiscussionClientMock.MarkAnswerFunc: method is nil but DiscussionClient.MarkAnswer was just called")
+	}
+	callInfo := struct {
+		Repo      ghrepo.Interface
+		CommentID string
+	}{
+		Repo:      repo,
+		CommentID: commentID,
+	}
+	mock.lockMarkAnswer.Lock()
+	mock.calls.MarkAnswer = append(mock.calls.MarkAnswer, callInfo)
+	mock.lockMarkAnswer.Unlock()
+	return mock.MarkAnswerFunc(repo, commentID)
+}
+
+// MarkAnswerCalls gets all the calls that were made to MarkAnswer.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.MarkAnswerCalls())
+func (mock *DiscussionClientMock) MarkAnswerCalls() []struct {
+	Repo      ghrepo.Interface
+	CommentID string
+} {
+	var calls []struct {
+		Repo      ghrepo.Interface
+		CommentID string
+	}
+	mock.lockMarkAnswer.RLock()
+	calls = mock.calls.MarkAnswer
+	mock.lockMarkAnswer.RUnlock()
+	return calls
+}
+
+// Reopen calls ReopenFunc.
+func (mock *DiscussionClientMock) Reopen(repo ghrepo.Interface, id string) (*Discussion, error) {
+	if mock.ReopenFunc == nil {
+		panic("DiscussionClientMock.ReopenFunc: method is nil but DiscussionClient.Reopen was just called")
+	}
+	callInfo := struct {
+		Repo ghrepo.Interface
+		ID   string
+	}{
+		Repo: repo,
+		ID:   id,
+	}
+	mock.lockReopen.Lock()
+	mock.calls.Reopen = append(mock.calls.Reopen, callInfo)
+	mock.lockReopen.Unlock()
+	return mock.ReopenFunc(repo, id)
+}
+
+// ReopenCalls gets all the calls that were made to Reopen.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.ReopenCalls())
+func (mock *DiscussionClientMock) ReopenCalls() []struct {
+	Repo ghrepo.Interface
+	ID   string
+} {
+	var calls []struct {
+		Repo ghrepo.Interface
+		ID   string
+	}
+	mock.lockReopen.RLock()
+	calls = mock.calls.Reopen
+	mock.lockReopen.RUnlock()
+	return calls
+}
+
+// Search calls SearchFunc.
+func (mock *DiscussionClientMock) Search(repo ghrepo.Interface, filters SearchFilters, limit int) ([]Discussion, int, error) {
+	if mock.SearchFunc == nil {
+		panic("DiscussionClientMock.SearchFunc: method is nil but DiscussionClient.Search was just called")
+	}
+	callInfo := struct {
+		Repo    ghrepo.Interface
+		Filters SearchFilters
+		Limit   int
+	}{
+		Repo:    repo,
+		Filters: filters,
+		Limit:   limit,
+	}
+	mock.lockSearch.Lock()
+	mock.calls.Search = append(mock.calls.Search, callInfo)
+	mock.lockSearch.Unlock()
+	return mock.SearchFunc(repo, filters, limit)
+}
+
+// SearchCalls gets all the calls that were made to Search.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.SearchCalls())
+func (mock *DiscussionClientMock) SearchCalls() []struct {
+	Repo    ghrepo.Interface
+	Filters SearchFilters
+	Limit   int
+} {
+	var calls []struct {
+		Repo    ghrepo.Interface
+		Filters SearchFilters
+		Limit   int
+	}
+	mock.lockSearch.RLock()
+	calls = mock.calls.Search
+	mock.lockSearch.RUnlock()
+	return calls
+}
+
+// Unlock calls UnlockFunc.
+func (mock *DiscussionClientMock) Unlock(repo ghrepo.Interface, id string) error {
+	if mock.UnlockFunc == nil {
+		panic("DiscussionClientMock.UnlockFunc: method is nil but DiscussionClient.Unlock was just called")
+	}
+	callInfo := struct {
+		Repo ghrepo.Interface
+		ID   string
+	}{
+		Repo: repo,
+		ID:   id,
+	}
+	mock.lockUnlock.Lock()
+	mock.calls.Unlock = append(mock.calls.Unlock, callInfo)
+	mock.lockUnlock.Unlock()
+	return mock.UnlockFunc(repo, id)
+}
+
+// UnlockCalls gets all the calls that were made to Unlock.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.UnlockCalls())
+func (mock *DiscussionClientMock) UnlockCalls() []struct {
+	Repo ghrepo.Interface
+	ID   string
+} {
+	var calls []struct {
+		Repo ghrepo.Interface
+		ID   string
+	}
+	mock.lockUnlock.RLock()
+	calls = mock.calls.Unlock
+	mock.lockUnlock.RUnlock()
+	return calls
+}
+
+// UnmarkAnswer calls UnmarkAnswerFunc.
+func (mock *DiscussionClientMock) UnmarkAnswer(repo ghrepo.Interface, commentID string) error {
+	if mock.UnmarkAnswerFunc == nil {
+		panic("DiscussionClientMock.UnmarkAnswerFunc: method is nil but DiscussionClient.UnmarkAnswer was just called")
+	}
+	callInfo := struct {
+		Repo      ghrepo.Interface
+		CommentID string
+	}{
+		Repo:      repo,
+		CommentID: commentID,
+	}
+	mock.lockUnmarkAnswer.Lock()
+	mock.calls.UnmarkAnswer = append(mock.calls.UnmarkAnswer, callInfo)
+	mock.lockUnmarkAnswer.Unlock()
+	return mock.UnmarkAnswerFunc(repo, commentID)
+}
+
+// UnmarkAnswerCalls gets all the calls that were made to UnmarkAnswer.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.UnmarkAnswerCalls())
+func (mock *DiscussionClientMock) UnmarkAnswerCalls() []struct {
+	Repo      ghrepo.Interface
+	CommentID string
+} {
+	var calls []struct {
+		Repo      ghrepo.Interface
+		CommentID string
+	}
+	mock.lockUnmarkAnswer.RLock()
+	calls = mock.calls.UnmarkAnswer
+	mock.lockUnmarkAnswer.RUnlock()
+	return calls
+}
+
+// Update calls UpdateFunc.
+func (mock *DiscussionClientMock) Update(repo ghrepo.Interface, input UpdateDiscussionInput) (*Discussion, error) {
+	if mock.UpdateFunc == nil {
+		panic("DiscussionClientMock.UpdateFunc: method is nil but DiscussionClient.Update was just called")
+	}
+	callInfo := struct {
+		Repo  ghrepo.Interface
+		Input UpdateDiscussionInput
+	}{
+		Repo:  repo,
+		Input: input,
+	}
+	mock.lockUpdate.Lock()
+	mock.calls.Update = append(mock.calls.Update, callInfo)
+	mock.lockUpdate.Unlock()
+	return mock.UpdateFunc(repo, input)
+}
+
+// UpdateCalls gets all the calls that were made to Update.
+// Check the length with:
+//
+//	len(mockedDiscussionClient.UpdateCalls())
+func (mock *DiscussionClientMock) UpdateCalls() []struct {
+	Repo  ghrepo.Interface
+	Input UpdateDiscussionInput
+} {
+	var calls []struct {
+		Repo  ghrepo.Interface
+		Input UpdateDiscussionInput
+	}
+	mock.lockUpdate.RLock()
+	calls = mock.calls.Update
+	mock.lockUpdate.RUnlock()
+	return calls
+}
diff --git a/pkg/cmd/discussion/client/types.go b/pkg/cmd/discussion/client/types.go
new file mode 100644
index 000000000..9870416ad
--- /dev/null
+++ b/pkg/cmd/discussion/client/types.go
@@ -0,0 +1,265 @@
+package client
+
+import "time"
+
+// Discussion represents a GitHub Discussion as a domain object.
+// Fields carry no JSON tags; serialization is handled by ExportData.
+type Discussion struct {
+	ID             string
+	Number         int
+	Title          string
+	Body           string
+	URL            string
+	State          string
+	StateReason    string
+	Author         DiscussionAuthor
+	Category       DiscussionCategory
+	Labels         []DiscussionLabel
+	Answered       bool
+	AnswerChosenAt time.Time
+	AnswerChosenBy *DiscussionAuthor
+	Comments       DiscussionCommentList
+	ReactionGroups []ReactionGroup
+	CreatedAt      time.Time
+	UpdatedAt      time.Time
+	ClosedAt       time.Time
+	Locked         bool
+}
+
+// ExportData returns a map of the requested fields for JSON output.
+// Because domain types carry no JSON struct tags, each field is mapped
+// explicitly rather than using reflection.
+func (d Discussion) ExportData(fields []string) map[string]interface{} {
+	data := map[string]interface{}{}
+	for _, f := range fields {
+		switch f {
+		case "id":
+			data[f] = d.ID
+		case "number":
+			data[f] = d.Number
+		case "title":
+			data[f] = d.Title
+		case "body":
+			data[f] = d.Body
+		case "url":
+			data[f] = d.URL
+		case "state":
+			data[f] = d.State
+		case "stateReason":
+			data[f] = d.StateReason
+		case "author":
+			data[f] = d.Author.Export()
+		case "category":
+			data[f] = d.Category.Export()
+		case "labels":
+			labels := make([]interface{}, len(d.Labels))
+			for i, l := range d.Labels {
+				labels[i] = l.Export()
+			}
+			data[f] = labels
+		case "answered":
+			data[f] = d.Answered
+		case "answerChosenAt":
+			if d.AnswerChosenAt.IsZero() {
+				data[f] = nil
+			} else {
+				data[f] = d.AnswerChosenAt
+			}
+		case "answerChosenBy":
+			if d.AnswerChosenBy == nil {
+				data[f] = nil
+			} else {
+				data[f] = d.AnswerChosenBy.Export()
+			}
+		case "comments":
+			comments := make([]interface{}, len(d.Comments.Comments))
+			for i, c := range d.Comments.Comments {
+				comments[i] = c.Export()
+			}
+			data[f] = map[string]interface{}{
+				"totalCount": d.Comments.TotalCount,
+				"nodes":      comments,
+			}
+		case "reactionGroups":
+			groups := make([]interface{}, len(d.ReactionGroups))
+			for i, rg := range d.ReactionGroups {
+				groups[i] = rg.Export()
+			}
+			data[f] = groups
+		case "createdAt":
+			data[f] = d.CreatedAt
+		case "updatedAt":
+			data[f] = d.UpdatedAt
+		case "closedAt":
+			if d.ClosedAt.IsZero() {
+				data[f] = nil
+			} else {
+				data[f] = d.ClosedAt
+			}
+		case "locked":
+			data[f] = d.Locked
+		}
+	}
+	return data
+}
+
+// DiscussionAuthor represents the author of a discussion or comment.
+type DiscussionAuthor struct {
+	ID    string
+	Login string
+	Name  string
+}
+
+// Export returns the author as a map for JSON output.
+func (a DiscussionAuthor) Export() map[string]interface{} {
+	return map[string]interface{}{
+		"id":    a.ID,
+		"login": a.Login,
+		"name":  a.Name,
+	}
+}
+
+// DiscussionCategory represents a discussion category within a repository.
+type DiscussionCategory struct {
+	ID           string
+	Name         string
+	Slug         string
+	Emoji        string
+	IsAnswerable bool
+}
+
+// Export returns the category as a map for JSON output.
+func (c DiscussionCategory) Export() map[string]interface{} {
+	return map[string]interface{}{
+		"id":           c.ID,
+		"name":         c.Name,
+		"slug":         c.Slug,
+		"emoji":        c.Emoji,
+		"isAnswerable": c.IsAnswerable,
+	}
+}
+
+// DiscussionLabel represents a label applied to a discussion.
+type DiscussionLabel struct {
+	ID    string
+	Name  string
+	Color string
+}
+
+// Export returns the label as a map for JSON output.
+func (l DiscussionLabel) Export() map[string]interface{} {
+	return map[string]interface{}{
+		"id":    l.ID,
+		"name":  l.Name,
+		"color": l.Color,
+	}
+}
+
+// DiscussionComment represents a comment or reply on a discussion.
+type DiscussionComment struct {
+	ID             string
+	URL            string
+	Author         DiscussionAuthor
+	Body           string
+	CreatedAt      time.Time
+	IsAnswer       bool
+	UpvoteCount    int
+	ReactionGroups []ReactionGroup
+	Replies        []DiscussionComment
+	TotalReplies   int
+}
+
+// Export returns the comment as a map for JSON output.
+func (c DiscussionComment) Export() map[string]interface{} {
+	replies := make([]interface{}, len(c.Replies))
+	for i, r := range c.Replies {
+		replies[i] = r.Export()
+	}
+	reactions := make([]interface{}, len(c.ReactionGroups))
+	for i, rg := range c.ReactionGroups {
+		reactions[i] = rg.Export()
+	}
+	return map[string]interface{}{
+		"id":             c.ID,
+		"url":            c.URL,
+		"author":         c.Author.Export(),
+		"body":           c.Body,
+		"createdAt":      c.CreatedAt,
+		"isAnswer":       c.IsAnswer,
+		"upvoteCount":    c.UpvoteCount,
+		"reactionGroups": reactions,
+		"replies":        replies,
+		"totalReplies":   c.TotalReplies,
+	}
+}
+
+// DiscussionCommentList represents a paginated list of comments on a discussion.
+type DiscussionCommentList struct {
+	Comments   []DiscussionComment
+	TotalCount int
+}
+
+// ReactionGroup represents a set of reactions of the same type.
+type ReactionGroup struct {
+	Content    string
+	TotalCount int
+}
+
+// Export returns the reaction group as a map for JSON output.
+func (rg ReactionGroup) Export() map[string]interface{} {
+	return map[string]interface{}{
+		"content":    rg.Content,
+		"totalCount": rg.TotalCount,
+	}
+}
+
+// CloseReason represents the reason for closing a discussion.
+type CloseReason string
+
+const (
+	// CloseReasonResolved indicates the discussion topic has been resolved.
+	CloseReasonResolved CloseReason = "RESOLVED"
+	// CloseReasonOutdated indicates the discussion is no longer relevant.
+	CloseReasonOutdated CloseReason = "OUTDATED"
+	// CloseReasonDuplicate indicates the discussion is a duplicate of another.
+	CloseReasonDuplicate CloseReason = "DUPLICATE"
+)
+
+// ListFilters holds parameters for the repository.discussions query.
+// CategoryID must be resolved by the caller before passing to List.
+type ListFilters struct {
+	State      string
+	CategoryID string
+	Answered   *bool
+	OrderBy    string
+	Direction  string
+}
+
+// SearchFilters holds parameters for the search query used when
+// author or label filtering is required.
+type SearchFilters struct {
+	Author    string
+	Labels    []string
+	State     string
+	Category  string
+	Answered  *bool
+	OrderBy   string
+	Direction string
+}
+
+// CreateDiscussionInput holds the parameters for creating a discussion.
+type CreateDiscussionInput struct {
+	RepositoryID string
+	CategoryID   string
+	Title        string
+	Body         string
+}
+
+// UpdateDiscussionInput holds optional parameters for updating a discussion.
+// Nil pointer fields are left unchanged.
+type UpdateDiscussionInput struct {
+	DiscussionID string
+	Title        *string
+	Body         *string
+	CategoryID   *string
+}
diff --git a/pkg/cmd/discussion/discussion.go b/pkg/cmd/discussion/discussion.go
new file mode 100644
index 000000000..6db07c5d8
--- /dev/null
+++ b/pkg/cmd/discussion/discussion.go
@@ -0,0 +1,33 @@
+package discussion
+
+import (
+	"github.com/MakeNowJust/heredoc"
+	"github.com/cli/cli/v2/pkg/cmdutil"
+	"github.com/spf13/cobra"
+)
+
+// NewCmdDiscussion returns the top-level "discussion" command.
+func NewCmdDiscussion(f *cmdutil.Factory) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "discussion <command>",
+		Short: "Manage discussions",
+		Long:  "Work with GitHub Discussions.",
+		Example: heredoc.Doc(`
+			$ gh discussion list
+			$ gh discussion create --category "General" --title "Hello"
+			$ gh discussion view 123
+		`),
+		Annotations: map[string]string{
+			"help:arguments": heredoc.Doc(`
+				A discussion can be supplied as argument in any of the following formats:
+				- by number, e.g. "123"; or
+				- by URL, e.g. "https://github.com/OWNER/REPO/discussions/123".
+			`),
+		},
+		GroupID: "core",
+	}
+
+	cmdutil.EnableRepoOverride(cmd, f)
+
+	return cmd
+}
diff --git a/pkg/cmd/discussion/shared/client.go b/pkg/cmd/discussion/shared/client.go
new file mode 100644
index 000000000..d0f34e04b
--- /dev/null
+++ b/pkg/cmd/discussion/shared/client.go
@@ -0,0 +1,21 @@
+// Package shared provides factory functions, field definitions, and display
+// helpers used across discussion subcommands.
+package shared
+
+import (
+	"github.com/cli/cli/v2/pkg/cmd/discussion/client"
+	"github.com/cli/cli/v2/pkg/cmdutil"
+)
+
+// DiscussionClientFunc returns a factory function that creates a DiscussionClient
+// from the given Factory. The returned function is intended to be stored in
+// command Options structs and called lazily inside RunE.
+func DiscussionClientFunc(f *cmdutil.Factory) func() (client.DiscussionClient, error) {
+	return func() (client.DiscussionClient, error) {
+		httpClient, err := f.HttpClient()
+		if err != nil {
+			return nil, err
+		}
+		return client.NewDiscussionClient(httpClient), nil
+	}
+}
diff --git a/pkg/cmd/discussion/shared/fields.go b/pkg/cmd/discussion/shared/fields.go
new file mode 100644
index 000000000..47d750314
--- /dev/null
+++ b/pkg/cmd/discussion/shared/fields.go
@@ -0,0 +1,25 @@
+package shared
+
+// DiscussionFields lists the field names available for --json output on
+// discussion commands.
+var DiscussionFields = []string{
+	"id",
+	"number",
+	"title",
+	"body",
+	"url",
+	"state",
+	"stateReason",
+	"author",
+	"category",
+	"labels",
+	"answered",
+	"answerChosenAt",
+	"answerChosenBy",
+	"comments",
+	"reactionGroups",
+	"createdAt",
+	"updatedAt",
+	"closedAt",
+	"locked",
+}
diff --git a/pkg/cmd/root/root.go b/pkg/cmd/root/root.go
index ed33f568e..a4bcf89fa 100644
--- a/pkg/cmd/root/root.go
+++ b/pkg/cmd/root/root.go
@@ -20,6 +20,7 @@ import (
 	completionCmd "github.com/cli/cli/v2/pkg/cmd/completion"
 	configCmd "github.com/cli/cli/v2/pkg/cmd/config"
 	copilotCmd "github.com/cli/cli/v2/pkg/cmd/copilot"
+	discussionCmd "github.com/cli/cli/v2/pkg/cmd/discussion"
 	extensionCmd "github.com/cli/cli/v2/pkg/cmd/extension"
 	"github.com/cli/cli/v2/pkg/cmd/factory"
 	gistCmd "github.com/cli/cli/v2/pkg/cmd/gist"
@@ -157,6 +158,7 @@ func NewCmdRoot(f *cmdutil.Factory, version, buildDate string) (*cobra.Command,
 
 	cmd.AddCommand(agentTaskCmd.NewCmdAgentTask(&repoResolvingCmdFactory))
 	cmd.AddCommand(browseCmd.NewCmdBrowse(&repoResolvingCmdFactory, nil))
+	cmd.AddCommand(discussionCmd.NewCmdDiscussion(&repoResolvingCmdFactory))
 	cmd.AddCommand(prCmd.NewCmdPR(&repoResolvingCmdFactory))
 	cmd.AddCommand(orgCmd.NewCmdOrg(&repoResolvingCmdFactory))
 	cmd.AddCommand(issueCmd.NewCmdIssue(&repoResolvingCmdFactory))