fix(client): fix label field bug, nil deref, receiver consistency, add tests

- CreateVoice/EditVoice: write 'labels' field instead of duplicate 'name' - GetVoice/GetVoices: check http error before dereferencing response - ConvertSpeechToText*: use value receiver for consistency - Add Content-Type: application/json header to all JSON POST requests - Add comprehensive test suite (35+ tests) using httptest
chore(deps): update Go to 1.26, bump purego, fix lint warning (#15 )
2026-04-08 14:11:31 -07:00 · 2026-04-06 07:10:27 +00:00 · 2026-03-04 04:45:43 -05:00 · 2026-02-22 20:51:27 -05:00 · 2025-07-04 19:22:42 -07:00 · 2025-04-30 10:26:33 -07:00
14 changed files with 924 additions and 167 deletions
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # elevenlabs
+
 [![License 0BSD](https://img.shields.io/badge/License-0BSD-pink.svg)](https://opensource.org/licenses/0BSD)
 [![GoDoc](https://godoc.org/github.com/taigrr/elevenlabs?status.svg)](https://godoc.org/github.com/taigrr/elevenlabs)
 [![Go Mod](https://img.shields.io/badge/go.mod-v1.20-blue)](go.mod)
 [![Go Report Card](https://goreportcard.com/badge/github.com/taigrr/elevenlabs?branch=master)](https://goreportcard.com/report/github.com/taigrr/elevenlabs)

-
 Unofficial [elevenlabs.io](https://beta.elevenlabs.io/) ([11.ai](http://11.ai)) voice synthesis client

 This library is not affiliated with, nor associated with ElevenLabs in any way.
@@ -13,10 +13,10 @@ ElevenLabs' official api documentation, upon which this client has been
 derived, [can be found here](https://api.elevenlabs.io/docs).

 ## Purpose
+
 This go client provides an easy interface to create synthesized voices and
 make TTS (text-to-speech) requests to elevenlabs.io

-
 As a prerequisite, you must already have an account with elevenlabs.io.
 After creating your account, you can get your API key [from here](https://help.elevenlabs.io/hc/en-us/articles/14599447207697-How-to-authorize-yourself-using-your-xi-api-key-).

@@ -35,8 +35,9 @@ Set the `XI_API_KEY` environment variable, and pipe it some text to give it a wh
 To use this library, create a new client and send a TTS request to a voice.
 The following code block illustrates how one might replicate the say/espeak
 command, using the streaming endpoint.
-I've opted to go with faiface's beep package, but you can also save the file
+I've opted to go with gopxl's beep package, but you can also save the file
 to an mp3 on-disk.
+
 ```go
 package main

@@ -48,9 +49,9 @@ import (
        "os"
        "time"

-        "github.com/faiface/beep"
-        "github.com/faiface/beep/mp3"
-        "github.com/faiface/beep/speaker"
+        "github.com/gopxl/beep/v2"
+        "github.com/gopxl/beep/v2/mp3"
+        "github.com/gopxl/beep/v2/speaker"

        "github.com/taigrr/elevenlabs/client"
        "github.com/taigrr/elevenlabs/client/types"
--- a/client/client.go
+++ b/client/client.go
@@ -2,6 +2,7 @@ package client

 import (
 	"errors"
+	"net/http"
 )

 const apiEndpoint = "https://api.elevenlabs.io"
@@ -12,14 +13,16 @@ var (
 )

 type Client struct {
-	apiKey   string
-	endpoint string
+	apiKey     string
+	endpoint   string
+	httpClient *http.Client
 }

 func New(apiKey string) Client {
 	return Client{
-		apiKey:   apiKey,
-		endpoint: apiEndpoint,
+		apiKey:     apiKey,
+		endpoint:   apiEndpoint,
+		httpClient: &http.Client{},
 	}
 }

@@ -27,3 +30,14 @@ func (c Client) WithEndpoint(endpoint string) Client {
 	c.endpoint = endpoint
 	return c
 }
+
+func (c Client) WithAPIKey(apiKey string) Client {
+	c.apiKey = apiKey
+	return c
+}
+
+// WithHTTPClient allows users to provide their own http.Client
+func (c Client) WithHTTPClient(hc *http.Client) Client {
+	c.httpClient = hc
+	return c
+}
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -0,0 +1,833 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/taigrr/elevenlabs/client/types"
+)
+
+// newTestClient creates a Client pointed at the given test server.
+func newTestClient(ts *httptest.Server) Client {
+	return New("test-api-key").WithEndpoint(ts.URL)
+}
+
+// assertAPIKey checks that the request carries the expected API key header.
+func assertAPIKey(t *testing.T, r *http.Request) {
+	t.Helper()
+	if got := r.Header.Get("xi-api-key"); got != "test-api-key" {
+		t.Errorf("xi-api-key = %q, want %q", got, "test-api-key")
+	}
+}
+
+func TestNew(t *testing.T) {
+	c := New("my-key")
+	if c.apiKey != "my-key" {
+		t.Fatalf("apiKey = %q, want %q", c.apiKey, "my-key")
+	}
+	if c.endpoint != apiEndpoint {
+		t.Fatalf("endpoint = %q, want %q", c.endpoint, apiEndpoint)
+	}
+	if c.httpClient == nil {
+		t.Fatal("httpClient is nil")
+	}
+}
+
+func TestWithEndpoint(t *testing.T) {
+	c := New("k").WithEndpoint("http://custom")
+	if c.endpoint != "http://custom" {
+		t.Fatalf("endpoint = %q", c.endpoint)
+	}
+}
+
+func TestWithAPIKey(t *testing.T) {
+	c := New("old").WithAPIKey("new")
+	if c.apiKey != "new" {
+		t.Fatalf("apiKey = %q", c.apiKey)
+	}
+}
+
+func TestWithHTTPClient(t *testing.T) {
+	custom := &http.Client{}
+	c := New("k").WithHTTPClient(custom)
+	if c.httpClient != custom {
+		t.Fatal("httpClient not set")
+	}
+}
+
+// --- TTS tests ---
+
+func TestTTS(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if r.Method != http.MethodPost {
+			t.Errorf("method = %s, want POST", r.Method)
+		}
+		if !strings.HasPrefix(r.URL.Path, "/v1/text-to-speech/") {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			t.Errorf("Content-Type = %q, want application/json", ct)
+		}
+		var body types.TTS
+		json.NewDecoder(r.Body).Decode(&body)
+		if body.Text != "hello" {
+			t.Errorf("text = %q", body.Text)
+		}
+		w.WriteHeader(200)
+		w.Write([]byte("audio-bytes"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	data, err := c.TTS(context.Background(), "hello", "voice1", "model1", types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.5})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(data) != "audio-bytes" {
+		t.Errorf("data = %q", string(data))
+	}
+}
+
+func TestTTSUnauthorized(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(401)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.TTS(context.Background(), "hello", "voice1", "", types.SynthesisOptions{})
+	if err != ErrUnauthorized {
+		t.Fatalf("err = %v, want ErrUnauthorized", err)
+	}
+}
+
+func TestTTSStream(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if !strings.HasSuffix(r.URL.Path, "/stream") {
+			t.Errorf("path = %s, want stream suffix", r.URL.Path)
+		}
+		w.WriteHeader(200)
+		w.Write([]byte("streamed"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.TTSStream(context.Background(), &buf, "text", "v1", types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.5})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "streamed" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+func TestTTSWithOptionalParams(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var body types.TTS
+		json.NewDecoder(r.Body).Decode(&body)
+		if body.PreviousText != "prev" {
+			t.Errorf("previous_text = %q", body.PreviousText)
+		}
+		if body.NextText != "next" {
+			t.Errorf("next_text = %q", body.NextText)
+		}
+		w.WriteHeader(200)
+		w.Write([]byte("ok"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.TTS(context.Background(), "hello", "v1", "m1",
+		types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.5},
+		WithPreviousText("prev"), WithNextText("next"))
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// --- Voice tests ---
+
+func TestGetVoices(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if r.URL.Path != "/v1/voices" {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		resp := types.GetVoicesResponseModel{
+			Voices: []types.VoiceResponseModel{
+				{VoiceID: "id1", Name: "Alice"},
+				{VoiceID: "id2", Name: "Bob"},
+			},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	voices, err := c.GetVoices(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(voices) != 2 {
+		t.Fatalf("len = %d", len(voices))
+	}
+	if voices[0].Name != "Alice" {
+		t.Errorf("name = %s", voices[0].Name)
+	}
+}
+
+func TestGetVoiceIDs(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := types.GetVoicesResponseModel{
+			Voices: []types.VoiceResponseModel{
+				{VoiceID: "id1"},
+				{VoiceID: "id2"},
+			},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	ids, err := c.GetVoiceIDs(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ids) != 2 || ids[0] != "id1" || ids[1] != "id2" {
+		t.Errorf("ids = %v", ids)
+	}
+}
+
+func TestGetVoice(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if r.URL.Path != "/v1/voices/v123" {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		resp := types.VoiceResponseModel{VoiceID: "v123", Name: "Test"}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	voice, err := c.GetVoice(context.Background(), "v123")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if voice.VoiceID != "v123" {
+		t.Errorf("voiceID = %s", voice.VoiceID)
+	}
+}
+
+func TestGetVoiceUnauthorized(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(401)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.GetVoice(context.Background(), "v1")
+	if err != ErrUnauthorized {
+		t.Fatalf("err = %v, want ErrUnauthorized", err)
+	}
+}
+
+func TestDeleteVoice(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if r.Method != http.MethodDelete {
+			t.Errorf("method = %s", r.Method)
+		}
+		w.WriteHeader(200)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	err := c.DeleteVoice(context.Background(), "v1")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGetVoiceSettings(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.8}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	settings, err := c.GetVoiceSettings(context.Background(), "v1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if settings.Stability != 0.5 {
+		t.Errorf("stability = %f", settings.Stability)
+	}
+}
+
+func TestEditVoiceSettings(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			t.Errorf("Content-Type = %q", ct)
+		}
+		w.WriteHeader(200)
+		json.NewEncoder(w).Encode(types.SynthesisOptions{})
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	err := c.EditVoiceSettings(context.Background(), "v1", types.SynthesisOptions{Stability: 0.5})
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// --- User tests ---
+
+func TestGetUserInfo(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		resp := types.UserResponseModel{
+			Subscription: types.Subscription{Tier: "pro"},
+			IsNewUser:    false,
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	info, err := c.GetUserInfo(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if info.Subscription.Tier != "pro" {
+		t.Errorf("tier = %s", info.Subscription.Tier)
+	}
+}
+
+func TestGetSubscriptionInfo(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := types.UserResponseModel{
+			Subscription: types.Subscription{Tier: "starter", CharacterLimit: 10000},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	sub, err := c.GetSubscriptionInfo(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sub.CharacterLimit != 10000 {
+		t.Errorf("limit = %d", sub.CharacterLimit)
+	}
+}
+
+// --- History tests ---
+
+func TestGetHistoryItemList(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		resp := types.GetHistoryResponse{
+			History: []types.HistoryItemList{
+				{HistoryItemID: "h1", VoiceID: "v1", Text: "hello"},
+				{HistoryItemID: "h2", VoiceID: "v2", Text: "world"},
+			},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	items, err := c.GetHistoryItemList(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) != 2 {
+		t.Fatalf("len = %d", len(items))
+	}
+}
+
+func TestGetHistoryIDs(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := types.GetHistoryResponse{
+			History: []types.HistoryItemList{
+				{HistoryItemID: "h1", VoiceID: "v1"},
+				{HistoryItemID: "h2", VoiceID: "v2"},
+				{HistoryItemID: "h3", VoiceID: "v1"},
+			},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+
+	// No filter
+	ids, err := c.GetHistoryIDs(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ids) != 3 {
+		t.Errorf("unfiltered len = %d", len(ids))
+	}
+}
+
+func TestGetHistoryIDsFiltered(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		resp := types.GetHistoryResponse{
+			History: []types.HistoryItemList{
+				{HistoryItemID: "h1", VoiceID: "v1"},
+				{HistoryItemID: "h2", VoiceID: "v2"},
+				{HistoryItemID: "h3", VoiceID: "v1"},
+			},
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	ids, err := c.GetHistoryIDs(context.Background(), "v1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ids) != 2 {
+		t.Errorf("filtered len = %d, want 2", len(ids))
+	}
+}
+
+func TestHistoryDelete(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodDelete {
+			t.Errorf("method = %s", r.Method)
+		}
+		w.WriteHeader(200)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	ok, err := c.HistoryDelete(context.Background(), "h1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !ok {
+		t.Error("expected true")
+	}
+}
+
+func TestHistoryDownloadAudio(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("audio-data"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	data, err := c.HistoryDownloadAudio(context.Background(), "h1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(data) == 0 {
+		t.Error("expected non-empty data")
+	}
+}
+
+// --- Samples tests ---
+
+func TestDeleteVoiceSample(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodDelete {
+			t.Errorf("method = %s", r.Method)
+		}
+		w.WriteHeader(200)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	ok, err := c.DeleteVoiceSample(context.Background(), "v1", "s1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !ok {
+		t.Error("expected true")
+	}
+}
+
+func TestDownloadVoiceSample(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("sample-audio"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	data, err := c.DownloadVoiceSample(context.Background(), "v1", "s1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(data) == 0 {
+		t.Error("expected non-empty data")
+	}
+}
+
+// --- Sound generation tests ---
+
+func TestSoundGeneration(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			t.Errorf("Content-Type = %q", ct)
+		}
+		var body types.SoundGeneration
+		json.NewDecoder(r.Body).Decode(&body)
+		if body.Text != "thunder" {
+			t.Errorf("text = %q", body.Text)
+		}
+		w.WriteHeader(200)
+		w.Write([]byte("sound-bytes"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	data, err := c.SoundGeneration(context.Background(), "thunder", 0, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(data) != "sound-bytes" {
+		t.Errorf("data = %q", string(data))
+	}
+}
+
+func TestSoundGenerationWriter(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("streamed-sound"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.SoundGenerationWriter(context.Background(), &buf, "rain", 5.0, 0.5)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "streamed-sound" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+// --- STT tests ---
+
+func TestConvertSpeechToTextFromReader(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if r.Method != http.MethodPost {
+			t.Errorf("method = %s", r.Method)
+		}
+		if !strings.HasPrefix(r.Header.Get("Content-Type"), "multipart/form-data") {
+			t.Errorf("Content-Type = %s", r.Header.Get("Content-Type"))
+		}
+		resp := types.SpeechToTextResponse{
+			Text:         "hello world",
+			LanguageCode: "en",
+		}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	resp, err := c.ConvertSpeechToTextFromReader(
+		context.Background(),
+		strings.NewReader("fake-audio"),
+		"test.wav",
+		types.SpeechToTextRequest{ModelID: types.SpeechToTextModelScribeV1},
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if resp.Text != "hello world" {
+		t.Errorf("text = %q", resp.Text)
+	}
+}
+
+func TestConvertSpeechToTextUnauthorized(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(401)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.ConvertSpeechToTextFromReader(
+		context.Background(),
+		strings.NewReader("fake"),
+		"test.wav",
+		types.SpeechToTextRequest{ModelID: types.SpeechToTextModelScribeV1},
+	)
+	if err != ErrUnauthorized {
+		t.Fatalf("err = %v, want ErrUnauthorized", err)
+	}
+}
+
+// --- Types tests ---
+
+func TestSynthesisOptionsClamp(t *testing.T) {
+	tests := []struct {
+		name string
+		in   types.SynthesisOptions
+		want types.SynthesisOptions
+	}{
+		{
+			name: "valid values unchanged",
+			in:   types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.8, Style: 0.3},
+			want: types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.8, Style: 0.3},
+		},
+		{
+			name: "out of range clamped",
+			in:   types.SynthesisOptions{Stability: 2.0, SimilarityBoost: -1.0, Style: 5.0},
+			want: types.SynthesisOptions{Stability: 0.75, SimilarityBoost: 0.75, Style: 0.0},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.in.Clamp()
+			if tt.in.Stability != tt.want.Stability {
+				t.Errorf("Stability = %f, want %f", tt.in.Stability, tt.want.Stability)
+			}
+			if tt.in.SimilarityBoost != tt.want.SimilarityBoost {
+				t.Errorf("SimilarityBoost = %f, want %f", tt.in.SimilarityBoost, tt.want.SimilarityBoost)
+			}
+			if tt.in.Style != tt.want.Style {
+				t.Errorf("Style = %f, want %f", tt.in.Style, tt.want.Style)
+			}
+		})
+	}
+}
+
+func TestValidationErrorString(t *testing.T) {
+	ve := types.ValidationError{Msg: "bad input", Type_: "value_error"}
+	s := ve.Error()
+	if !strings.Contains(s, "bad input") {
+		t.Errorf("error = %q", s)
+	}
+}
+
+func TestParamErrorString(t *testing.T) {
+	pe := types.ParamError{}
+	pe.Detail.Status = "error"
+	pe.Detail.Message = "invalid param"
+	s := pe.Error()
+	if !strings.Contains(s, "invalid param") {
+		t.Errorf("error = %q", s)
+	}
+}
+
+// --- TTSWriter test ---
+
+func TestTTSWriter(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("written-audio"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.TTSWriter(context.Background(), &buf, "hello", "m1", "v1", types.SynthesisOptions{Stability: 0.5, SimilarityBoost: 0.5})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "written-audio" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+// --- DownloadVoiceSampleWriter test ---
+
+func TestDownloadVoiceSampleWriter(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("sample-stream"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.DownloadVoiceSampleWriter(context.Background(), &buf, "v1", "s1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "sample-stream" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+// --- HistoryDownloadAudioWriter test ---
+
+func TestHistoryDownloadAudioWriter(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("audio-stream"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.HistoryDownloadAudioWriter(context.Background(), &buf, "h1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "audio-stream" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+// --- HistoryDownloadZip tests ---
+
+func TestHistoryDownloadZip(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			t.Errorf("Content-Type = %q, want application/json", ct)
+		}
+		var body types.HistoryPost
+		json.NewDecoder(r.Body).Decode(&body)
+		if len(body.HistoryItemIds) < 2 {
+			t.Errorf("expected at least 2 ids, got %d", len(body.HistoryItemIds))
+		}
+		w.WriteHeader(200)
+		w.Write([]byte("zip-data"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	data, err := c.HistoryDownloadZip(context.Background(), "h1", "h2")
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = data
+}
+
+func TestHistoryDownloadZipWriter(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		w.Write([]byte("zip-stream"))
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.HistoryDownloadZipWriter(context.Background(), &buf, "h1", "h2")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(buf.String(), "zip-stream") {
+		t.Errorf("got = %q", buf.String())
+	}
+}
+
+// Verify CreateVoice sends multipart with correct field names
+func TestCreateVoiceFieldNames(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		assertAPIKey(t, r)
+		if err := r.ParseMultipartForm(1 << 20); err != nil {
+			t.Fatal(err)
+		}
+		name := r.FormValue("name")
+		if name != "TestVoice" {
+			t.Errorf("name = %q", name)
+		}
+		labels := r.FormValue("labels")
+		if labels != "english, male" {
+			t.Errorf("labels = %q, want %q", labels, "english, male")
+		}
+		w.WriteHeader(200)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	err := c.CreateVoice(context.Background(), "TestVoice", "A test voice", []string{"english", "male"}, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// Verify handling of 422 validation errors
+func TestTTS422(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(422)
+		json.NewEncoder(w).Encode(types.ValidationError{Msg: "invalid", Type_: "value_error"})
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.TTS(context.Background(), "hello", "v1", "", types.SynthesisOptions{})
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "invalid") {
+		t.Errorf("error = %q", err.Error())
+	}
+}
+
+// Test that STT properly sends diarize and other fields
+func TestSTTFields(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if err := r.ParseMultipartForm(1 << 20); err != nil {
+			t.Fatal(err)
+		}
+		if r.FormValue("model_id") != "scribe_v1" {
+			t.Errorf("model_id = %q", r.FormValue("model_id"))
+		}
+		if r.FormValue("diarize") != "true" {
+			t.Errorf("diarize = %q", r.FormValue("diarize"))
+		}
+		if r.FormValue("language_code") != "en" {
+			t.Errorf("language_code = %q", r.FormValue("language_code"))
+		}
+		resp := types.SpeechToTextResponse{Text: "ok"}
+		json.NewEncoder(w).Encode(resp)
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	_, err := c.ConvertSpeechToTextFromReader(
+		context.Background(),
+		strings.NewReader("audio"),
+		"test.wav",
+		types.SpeechToTextRequest{
+			ModelID:      types.SpeechToTextModelScribeV1,
+			LanguageCode: "en",
+			Diarize:      true,
+		},
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// Test that io.Writer variants correctly proxy
+func TestDownloadVoiceSampleWriterProxy(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		_, _ = io.WriteString(w, "proxy-test")
+	}))
+	defer ts.Close()
+
+	c := newTestClient(ts)
+	var buf strings.Builder
+	err := c.DownloadVoiceSampleWriter(context.Background(), &buf, "v1", "s1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if buf.String() != "proxy-test" {
+		t.Errorf("got = %q", buf.String())
+	}
+}
--- a/client/history.go
+++ b/client/history.go
@@ -15,8 +15,6 @@ import (

 func (c Client) HistoryDelete(ctx context.Context, historyItemID string) (bool, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/history/%s", historyItemID)
-
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, url, nil)
 	if err != nil {
 		return false, err
@@ -24,7 +22,7 @@ func (c Client) HistoryDelete(ctx context.Context, historyItemID string) (bool,
 	req.Header.Set("accept", "application/json")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)

 	switch res.StatusCode {
 	case 401:
@@ -55,7 +53,6 @@ func (c Client) HistoryDownloadZipWriter(ctx context.Context, w io.Writer, id1,
 	toDownload := types.HistoryPost{
 		HistoryItemIds: downloads,
 	}
-	client := &http.Client{}
 	body, _ := json.Marshal(toDownload)
 	bodyReader := bytes.NewReader(body)
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bodyReader)
@@ -63,10 +60,11 @@ func (c Client) HistoryDownloadZipWriter(ctx context.Context, w io.Writer, id1,
 		return err
 	}

+	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("accept", "archive/zip")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)

 	switch res.StatusCode {
 	case 401:
@@ -99,7 +97,6 @@ func (c Client) HistoryDownloadZip(ctx context.Context, id1, id2 string, additio
 	toDownload := types.HistoryPost{
 		HistoryItemIds: downloads,
 	}
-	client := &http.Client{}
 	body, _ := json.Marshal(toDownload)
 	bodyReader := bytes.NewReader(body)
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bodyReader)
@@ -107,10 +104,11 @@ func (c Client) HistoryDownloadZip(ctx context.Context, id1, id2 string, additio
 		return []byte{}, err
 	}

+	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("accept", "archive/zip")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)

 	switch res.StatusCode {
 	case 401:
@@ -142,7 +140,6 @@ func (c Client) HistoryDownloadZip(ctx context.Context, id1, id2 string, additio

 func (c Client) HistoryDownloadAudioWriter(ctx context.Context, w io.Writer, ID string) error {
 	url := fmt.Sprintf(c.endpoint+"/v1/history/%s/audio", ID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return err
@@ -150,7 +147,7 @@ func (c Client) HistoryDownloadAudioWriter(ctx context.Context, w io.Writer, ID
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -179,7 +176,6 @@ func (c Client) HistoryDownloadAudioWriter(ctx context.Context, w io.Writer, ID

 func (c Client) HistoryDownloadAudio(ctx context.Context, ID string) ([]byte, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/history/%s/audio", ID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return []byte{}, err
@@ -187,7 +183,7 @@ func (c Client) HistoryDownloadAudio(ctx context.Context, ID string) ([]byte, er
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return []byte{}, err
 	}
@@ -219,7 +215,6 @@ func (c Client) HistoryDownloadAudio(ctx context.Context, ID string) ([]byte, er

 func (c Client) GetHistoryItemList(ctx context.Context) ([]types.HistoryItemList, error) {
 	url := c.endpoint + "/v1/history"
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return []types.HistoryItemList{}, err
@@ -227,7 +222,7 @@ func (c Client) GetHistoryItemList(ctx context.Context) ([]types.HistoryItemList
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return []types.HistoryItemList{}, err
 	}
--- a/client/samples.go
+++ b/client/samples.go
@@ -15,7 +15,6 @@ import (

 func (c Client) DeleteVoiceSample(ctx context.Context, voiceID, sampleID string) (bool, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/samples/%s", voiceID, sampleID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, url, nil)
 	if err != nil {
 		return false, err
@@ -24,7 +23,7 @@ func (c Client) DeleteVoiceSample(ctx context.Context, voiceID, sampleID string)
 	req.Header.Set("accept", "application/json")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return false, err
 	}
@@ -50,7 +49,6 @@ func (c Client) DeleteVoiceSample(ctx context.Context, voiceID, sampleID string)

 func (c Client) DownloadVoiceSampleWriter(ctx context.Context, w io.Writer, voiceID, sampleID string) error {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/samples/%s/audio", voiceID, sampleID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return err
@@ -58,7 +56,7 @@ func (c Client) DownloadVoiceSampleWriter(ctx context.Context, w io.Writer, voic
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -87,7 +85,6 @@ func (c Client) DownloadVoiceSampleWriter(ctx context.Context, w io.Writer, voic

 func (c Client) DownloadVoiceSample(ctx context.Context, voiceID, sampleID string) ([]byte, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/samples/%s/audio", voiceID, sampleID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return []byte{}, err
@@ -95,7 +92,7 @@ func (c Client) DownloadVoiceSample(ctx context.Context, voiceID, sampleID strin
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return []byte{}, err
 	}
--- a/client/sound_gen.go
+++ b/client/sound_gen.go
@@ -68,8 +68,6 @@ func (c Client) SoundGeneration(ctx context.Context, text string, durationSecond

 func (c Client) requestSoundGeneration(ctx context.Context, params types.SoundGeneration) (io.ReadCloser, error) {
 	url := c.endpoint + "/v1/sound-generation"
-	client := &http.Client{}
-
 	b, err := json.Marshal(params)
 	if err != nil {
 		return nil, err
@@ -80,11 +78,12 @@ func (c Client) requestSoundGeneration(ctx context.Context, params types.SoundGe
 		return nil, err
 	}

+	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")

-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return nil, err
 	}
--- a/client/stt.go
+++ b/client/stt.go
@@ -16,7 +16,7 @@ import (
 )

 // ConvertSpeechToText converts audio to text using the specified file path
-func (c *Client) ConvertSpeechToText(ctx context.Context, audioFilePath string, request types.SpeechToTextRequest) (*types.SpeechToTextResponse, error) {
+func (c Client) ConvertSpeechToText(ctx context.Context, audioFilePath string, request types.SpeechToTextRequest) (*types.SpeechToTextResponse, error) {
 	file, err := os.Open(audioFilePath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to open audio file: %w", err)
@@ -27,7 +27,7 @@ func (c *Client) ConvertSpeechToText(ctx context.Context, audioFilePath string,
 }

 // ConvertSpeechToTextFromReader converts audio to text using the provided reader
-func (c *Client) ConvertSpeechToTextFromReader(ctx context.Context, reader io.Reader, filename string, request types.SpeechToTextRequest) (*types.SpeechToTextResponse, error) {
+func (c Client) ConvertSpeechToTextFromReader(ctx context.Context, reader io.Reader, filename string, request types.SpeechToTextRequest) (*types.SpeechToTextResponse, error) {
 	body := &bytes.Buffer{}
 	writer := multipart.NewWriter(body)

@@ -75,8 +75,7 @@ func (c *Client) ConvertSpeechToTextFromReader(ctx context.Context, reader io.Re
 		return nil, fmt.Errorf("failed to close multipart writer: %w", err)
 	}

-	client := &http.Client{}
-	url := fmt.Sprintf(c.endpoint + "/v1/speech-to-text")
+	url := c.endpoint + "/v1/speech-to-text"
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create request: %w", err)
@@ -86,7 +85,7 @@ func (c *Client) ConvertSpeechToTextFromReader(ctx context.Context, reader io.Re
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("xi-api-key", c.apiKey)

-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return nil, fmt.Errorf("failed to send request: %w", err)
 	}
--- a/client/tts.go
+++ b/client/tts.go
@@ -88,16 +88,16 @@ func (c Client) requestTTS(ctx context.Context, params types.TTS, options types.
 	if params.Stream {
 		url += "/stream"
 	}
-	client := &http.Client{}
 	b, _ := json.Marshal(params)
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewBuffer(b))
 	if err != nil {
 		return nil, err
 	}
+	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "audio/mpeg")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return nil, err
 	}
--- a/client/types/types.go
+++ b/client/types/types.go
@@ -40,9 +40,8 @@ func (so *SynthesisOptions) Clamp() {
 	if so.Style > 1 || so.Style < 0 {
 		so.Style = 0.0
 	}
-	if so.UseSpeakerBoost != true && so.UseSpeakerBoost != false {
-		so.UseSpeakerBoost = true
-	}
+	// UseSpeakerBoost defaults to the zero value (false) for bool;
+	// no conditional needed as the caller sets it explicitly.
 }

 type SynthesisOptions struct {
--- a/client/user.go
+++ b/client/user.go
@@ -11,7 +11,6 @@ import (

 func (c Client) GetUserInfo(ctx context.Context) (types.UserResponseModel, error) {
 	url := c.endpoint + "/v1/user"
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return types.UserResponseModel{}, err
@@ -19,7 +18,7 @@ func (c Client) GetUserInfo(ctx context.Context) (types.UserResponseModel, error
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return types.UserResponseModel{}, err
 	}
--- a/client/voices.go
+++ b/client/voices.go
@@ -17,8 +17,6 @@ import (

 func (c Client) CreateVoice(ctx context.Context, name, description string, labels []string, files []*os.File) error {
 	url := c.endpoint + "/v1/voices/add"
-	client := &http.Client{}
-
 	var b bytes.Buffer
 	w := multipart.NewWriter(&b)
 	for _, r := range files {
@@ -33,7 +31,7 @@ func (c Client) CreateVoice(ctx context.Context, name, description string, label
 	}
 	w.WriteField("name", name)
 	w.WriteField("description", description)
-	w.WriteField("name", strings.Join(labels, ", "))
+	w.WriteField("labels", strings.Join(labels, ", "))
 	w.Close()
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, &b)
 	if err != nil {
@@ -43,7 +41,7 @@ func (c Client) CreateVoice(ctx context.Context, name, description string, label
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -69,7 +67,6 @@ func (c Client) CreateVoice(ctx context.Context, name, description string, label

 func (c Client) DeleteVoice(ctx context.Context, voiceID string) error {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s", voiceID)
-	client := &http.Client{}
 	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, url, nil)
 	if err != nil {
 		return err
@@ -77,7 +74,7 @@ func (c Client) DeleteVoice(ctx context.Context, voiceID string) error {
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -103,17 +100,18 @@ func (c Client) DeleteVoice(ctx context.Context, voiceID string) error {

 func (c Client) EditVoiceSettings(ctx context.Context, voiceID string, settings types.SynthesisOptions) error {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/settings/edit", voiceID)
-	client := &http.Client{}
+
 	b, _ := json.Marshal(settings)

 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(b))
 	if err != nil {
 		return err
 	}
+	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -145,7 +143,6 @@ func (c Client) EditVoiceSettings(ctx context.Context, voiceID string, settings

 func (c Client) EditVoice(ctx context.Context, voiceID, name, description string, labels []string, files []*os.File) error {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/edit", voiceID)
-	client := &http.Client{}

 	var b bytes.Buffer
 	w := multipart.NewWriter(&b)
@@ -161,7 +158,7 @@ func (c Client) EditVoice(ctx context.Context, voiceID, name, description string
 	}
 	w.WriteField("name", name)
 	w.WriteField("description", description)
-	w.WriteField("name", strings.Join(labels, ", "))
+	w.WriteField("labels", strings.Join(labels, ", "))
 	w.Close()
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, &b)
 	if err != nil {
@@ -171,7 +168,7 @@ func (c Client) EditVoice(ctx context.Context, voiceID, name, description string
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return err
 	}
@@ -197,7 +194,7 @@ func (c Client) EditVoice(ctx context.Context, voiceID, name, description string

 func (c Client) GetVoiceSettings(ctx context.Context, voiceID string) (types.SynthesisOptions, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s/settings", voiceID)
-	client := &http.Client{}
+
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return types.SynthesisOptions{}, err
@@ -205,7 +202,7 @@ func (c Client) GetVoiceSettings(ctx context.Context, voiceID string) (types.Syn
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
 	if err != nil {
 		return types.SynthesisOptions{}, err
 	}
@@ -237,7 +234,7 @@ func (c Client) GetVoiceSettings(ctx context.Context, voiceID string) (types.Syn

 func (c Client) GetVoice(ctx context.Context, voiceID string) (types.VoiceResponseModel, error) {
 	url := fmt.Sprintf(c.endpoint+"/v1/voices/%s", voiceID)
-	client := &http.Client{}
+
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return types.VoiceResponseModel{}, err
@@ -245,15 +242,14 @@ func (c Client) GetVoice(ctx context.Context, voiceID string) (types.VoiceRespon
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
+	if err != nil {
+		return types.VoiceResponseModel{}, err
+	}
 	switch res.StatusCode {
 	case 401:
 		return types.VoiceResponseModel{}, ErrUnauthorized
 	case 200:
-		if err != nil {
-			return types.VoiceResponseModel{}, err
-		}
-
 		vrm := types.VoiceResponseModel{}
 		defer res.Body.Close()
 		jerr := json.NewDecoder(res.Body).Decode(&vrm)
@@ -279,7 +275,7 @@ func (c Client) GetVoice(ctx context.Context, voiceID string) (types.VoiceRespon

 func (c Client) GetVoices(ctx context.Context) ([]types.VoiceResponseModel, error) {
 	url := c.endpoint + "/v1/voices"
-	client := &http.Client{}
+
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return []types.VoiceResponseModel{}, err
@@ -287,14 +283,14 @@ func (c Client) GetVoices(ctx context.Context) ([]types.VoiceResponseModel, erro
 	req.Header.Set("xi-api-key", c.apiKey)
 	req.Header.Set("User-Agent", "github.com/taigrr/elevenlabs")
 	req.Header.Set("accept", "application/json")
-	res, err := client.Do(req)
+	res, err := c.httpClient.Do(req)
+	if err != nil {
+		return []types.VoiceResponseModel{}, err
+	}
 	switch res.StatusCode {
 	case 401:
 		return []types.VoiceResponseModel{}, ErrUnauthorized
 	case 200:
-		if err != nil {
-			return []types.VoiceResponseModel{}, err
-		}
 		vr := types.GetVoicesResponseModel{}
 		defer res.Body.Close()
 		jerr := json.NewDecoder(res.Body).Decode(&vr)
--- a/cmd/say/main.go
+++ b/cmd/say/main.go
@@ -9,9 +9,9 @@ import (
 	"strings"
 	"time"

-	"github.com/faiface/beep"
-	"github.com/faiface/beep/mp3"
-	"github.com/faiface/beep/speaker"
+	"github.com/gopxl/beep/v2"
+	"github.com/gopxl/beep/v2/mp3"
+	"github.com/gopxl/beep/v2/speaker"

 	"github.com/taigrr/elevenlabs/client"
 	"github.com/taigrr/elevenlabs/client/types"
--- a/go.mod
+++ b/go.mod
@@ -1,18 +1,13 @@
 module github.com/taigrr/elevenlabs

-go 1.23.0
+go 1.26.0

-toolchain go1.24.0
-
-require github.com/faiface/beep v1.1.0
+require github.com/gopxl/beep/v2 v2.1.1

 require (
+	github.com/ebitengine/oto/v3 v3.4.0 // indirect
+	github.com/ebitengine/purego v0.10.0 // indirect
 	github.com/hajimehoshi/go-mp3 v0.3.4 // indirect
-	github.com/hajimehoshi/oto v1.0.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 // indirect
-	golang.org/x/exp/shiny v0.0.0-20250228200357-dead58393ab7 // indirect
-	golang.org/x/image v0.24.0 // indirect
-	golang.org/x/mobile v0.0.0-20250218173827-cd096645fcd3 // indirect
-	golang.org/x/sys v0.30.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,92 +1,22 @@
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
-github.com/d4l3k/messagediff v1.2.2-0.20190829033028-7e0a312ae40b/go.mod h1:Oozbb1TVXFac9FtSIxHBMnBCq2qeH/2KkEQxENCrlLo=
-github.com/faiface/beep v1.1.0 h1:A2gWP6xf5Rh7RG/p9/VAW2jRSDEGQm5sbOb38sf5d4c=
-github.com/faiface/beep v1.1.0/go.mod h1:6I8p6kK2q4opL/eWb+kAkk38ehnTunWeToJB+s51sT4=
-github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
-github.com/gdamore/tcell v1.3.0/go.mod h1:Hjvr+Ofd+gLglo7RYKxxnzCBmev3BzsS67MebKS4zMM=
-github.com/go-audio/audio v1.0.0/go.mod h1:6uAu0+H2lHkwdGsAY+j2wHPNPpPoeg5AaEFh9FlA+Zs=
-github.com/go-audio/riff v1.0.0/go.mod h1:l3cQwc85y79NQFCRB7TiPoNiaijp6q8Z0Uv38rVG498=
-github.com/go-audio/wav v1.0.0/go.mod h1:3yoReyQOsiARkvPl3ERCi8JFjihzG6WhjYpZCf5zAWE=
-github.com/hajimehoshi/go-mp3 v0.3.0/go.mod h1:qMJj/CSDxx6CGHiZeCgbiq2DSUkbK0UbtXShQcnfyMM=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/hajimehoshi/go-mp3 v0.3.4 h1:NUP7pBYH8OguP4diaTZ9wJbUbk3tC0KlfzsEpWmYj68=
 github.com/hajimehoshi/go-mp3 v0.3.4/go.mod h1:fRtZraRFcWb0pu7ok0LqyFhCUrPeMsGRSVop0eemFmo=
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 github.com/hajimehoshi/oto/v2 v2.3.1/go.mod h1:seWLbgHH7AyUMYKfKYT9pg7PhUu9/SisyJvNTT+ASQo=
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-github.com/mewkiz/flac v1.0.7/go.mod h1:yU74UH277dBUpqxPouHSQIar3G1X/QIclVbFahSd1pU=
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 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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-golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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Author	SHA1	Message	Date
Tai Groot	3e3d8def67	fix(client): fix label field bug, nil deref, receiver consistency, add tests - CreateVoice/EditVoice: write 'labels' field instead of duplicate 'name' - GetVoice/GetVoices: check http error before dereferencing response - ConvertSpeechToText*: use value receiver for consistency - Add Content-Type: application/json header to all JSON POST requests - Add comprehensive test suite (35+ tests) using httptest	2026-04-06 07:10:27 +00:00
Tai Groot	ae5a1f2218	chore(deps): update Go to 1.26, bump purego, fix lint warning (#15 ) - Updated Go version from 1.24.0 to 1.26.0 - Bumped ebitengine/purego v0.9.1 -> v0.10.0 - Removed dead code in SynthesisOptions.Clamp() (staticcheck S1002)	2026-03-04 04:45:43 -05:00
Tai Groot	7e25beb0a7	chore: update dependencies, fix vet warning (#14 ) - Bump go directive from 1.23 to 1.24 - Update ebitengine/oto/v3 v3.3.2 → v3.4.0 - Update ebitengine/purego v0.8.0 → v0.9.1 - Update golang.org/x/sys v0.32.0 → v0.41.0 - Fix fmt.Sprintf with non-format string in stt.go	2026-02-22 20:51:27 -05:00
Tai Groot	b179ed7944	update to newer sound package	2025-07-04 19:22:42 -07:00
Tai Groot	c5609d07e9	update dep	2025-04-30 10:26:33 -07:00
Jose Ramirez	d79325ad71	add WithHTTPClient (#13 )	2025-04-30 10:21:50 -07:00