diff --git a/.gitignore b/.gitignore
index 759e3286..707d130f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,6 @@
 /binaries
 /checksums.txt
 /.env*
+ui/
+gptscript.code-workspace
+examples/
diff --git a/Makefile b/Makefile
index e0d93a1d..3bb7e7e4 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,12 @@ all: build
 build-exe:
 	GOOS=windows go build -o bin/gptscript.exe -tags "${GO_TAGS}" .
 
+build-linux-amd64:
+	GOOS=linux GOARCH=amd64 go build -o bin/gptscript_linux_amd64 -tags "${GO_TAGS}" .
+
+build-linux-arm64:
+	GOOS=linux GOARCH=arm64 go build -o bin/gptscript_linux_arm64 -tags "${GO_TAGS}" .
+
 build:
 	CGO_ENABLED=0 go build -o bin/gptscript -tags "${GO_TAGS}" -ldflags "-s -w" .
 
@@ -23,6 +29,12 @@ smoke:
 	go test -v -tags='smoke' ./pkg/tests/smoke/...
 
 GOLANGCI_LINT_VERSION ?= v1.59.0
+
+cp: build-linux-amd64 build-linux-arm64
+	cp bin/gptscript_linux_amd64 ~/Workspace/streamlit-gptscript/gptscript/bin/gptscript
+	cp bin/gptscript_linux_amd64 ~/Workspace/streamlit-gptscript/gptscript/bin/gptscript_linux_amd64
+	cp bin/gptscript_linux_arm64 ~/Workspace/streamlit-gptscript/gptscript/bin/gptscript_linux_arm64
+
 lint:
 	if ! command -v golangci-lint &> /dev/null; then \
   		echo "Could not find golangci-lint, installing version $(GOLANGCI_LINT_VERSION)."; \
diff --git a/go.mod b/go.mod
index f0213f7e..f5f2ce9a 100644
--- a/go.mod
+++ b/go.mod
@@ -48,6 +48,7 @@ require (
 	github.com/bodgit/plumbing v1.2.0 // indirect
 	github.com/bodgit/sevenzip v1.3.0 // indirect
 	github.com/bodgit/windows v1.0.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/charmbracelet/glamour v0.7.0 // indirect
 	github.com/charmbracelet/lipgloss v0.11.0 // indirect
 	github.com/charmbracelet/x/ansi v0.1.1 // indirect
@@ -55,6 +56,7 @@ require (
 	github.com/containerd/console v1.0.4 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dlclark/regexp2 v1.4.0 // indirect
 	github.com/dsnet/compress v0.0.1 // indirect
 	github.com/go-openapi/jsonpointer v0.20.2 // indirect
diff --git a/pkg/engine/control.go b/pkg/engine/control.go
new file mode 100644
index 00000000..7bb45c0a
--- /dev/null
+++ b/pkg/engine/control.go
@@ -0,0 +1,20 @@
+package engine
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/gptscript-ai/gptscript/pkg/types"
+)
+
+func (e *Engine) runBreak(tool types.Tool, input string) (cmdOut *Return, cmdErr error) {
+	info, err := json.Marshal(tool)
+	if err != nil {
+		return nil, err
+	}
+	var dict map[string]interface{}
+	json.Unmarshal(info, &dict)
+	dict["input"] = input
+	info, err = json.Marshal(dict)
+	return nil, fmt.Errorf("TOOL_BREAK: %s", info)
+}
diff --git a/pkg/engine/engine.go b/pkg/engine/engine.go
index 250e9578..a62db5cd 100644
--- a/pkg/engine/engine.go
+++ b/pkg/engine/engine.go
@@ -1,9 +1,12 @@
 package engine
 
 import (
+	"bufio"
 	"context"
 	"encoding/json"
 	"fmt"
+	"log/slog"
+	"os"
 	"strings"
 	"sync"
 
@@ -256,6 +259,39 @@ func (c *Context) WrappedContext() context.Context {
 	return context.WithValue(c.Ctx, engineContext{}, c)
 }
 
+func putHistory(messages []types.CompletionMessage) []types.CompletionMessage {
+	prevHistoryFile := strings.TrimSpace(os.Getenv("GPTSCRIPT_PREVIOUS_HISTORY_FILE"))
+
+	if prevHistoryFile == "" {
+		return messages
+	}
+	fp, err := os.Open(prevHistoryFile)
+	if err != nil {
+		slog.Error("Open Error", err)
+		return messages
+	}
+	defer fp.Close()
+
+	scanner := bufio.NewScanner(fp)
+
+	prevMessages := []types.CompletionMessage{}
+	for scanner.Scan() {
+		var message types.CompletionMessage
+		line := scanner.Text()
+		err := json.Unmarshal([]byte(line), &message)
+		if err != nil {
+			slog.Error("Unmarshal Error", err)
+			return messages
+		}
+		if message.Role == "system" {
+			continue
+		}
+		prevMessages = append(prevMessages, message)
+	}
+
+	return append(messages, prevMessages...)
+}
+
 func (e *Engine) Start(ctx Context, input string) (ret *Return, _ error) {
 	tool := ctx.Tool
 
@@ -274,6 +310,8 @@ func (e *Engine) Start(ctx Context, input string) (ret *Return, _ error) {
 			return e.runOpenAPI(tool, input)
 		} else if tool.IsEcho() {
 			return e.runEcho(tool)
+		} else if tool.IsBreak() {
+			return e.runBreak(tool, input)
 		}
 		s, err := e.runCommand(ctx, tool, input, ctx.ToolCategory)
 		if err != nil {
@@ -314,6 +352,10 @@ func (e *Engine) Start(ctx Context, input string) (ret *Return, _ error) {
 		input = ""
 	}
 
+	if ctx.Parent == nil {
+		completion.Messages = putHistory(completion.Messages)
+	}
+
 	if input != "" {
 		completion.Messages = append(completion.Messages, types.CompletionMessage{
 			Role:    types.CompletionMessageRoleTypeUser,
diff --git a/pkg/openai/client.go b/pkg/openai/client.go
index 53252895..d82b8e1e 100644
--- a/pkg/openai/client.go
+++ b/pkg/openai/client.go
@@ -361,7 +361,7 @@ func (c *Client) Call(ctx context.Context, messageRequest types.CompletionReques
 	id := counter.Next()
 	status <- types.CompletionStatus{
 		CompletionID: id,
-		Request:      request,
+		Request:      messageRequest.Messages,
 	}
 
 	var cacheResponse bool
diff --git a/pkg/runner/runner.go b/pkg/runner/runner.go
index cc5a3927..610673c7 100644
--- a/pkg/runner/runner.go
+++ b/pkg/runner/runner.go
@@ -5,7 +5,9 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"os"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -672,17 +674,29 @@ func streamProgress(callCtx *engine.Context, monitor Monitor) (chan<- types.Comp
 
 	wg := sync.WaitGroup{}
 	wg.Add(1)
+	progressTimeStepMs, err := strconv.Atoi(os.Getenv("GPTSCRIPT_PROGRESS_TIME_STEP_MS"))
+	if err != nil {
+		// 기본값 250ms를 사용하거나 오류를 처리합니다.
+		progressTimeStepMs = 250
+	}
+	progressTimeStep := time.Duration(progressTimeStepMs) * time.Millisecond
 	go func() {
 		defer wg.Done()
+		lastSentTimeMap := make(map[string]time.Time)
 		for status := range progress {
 			if message := status.PartialResponse; message != nil {
-				monitor.Event(Event{
-					Time:             time.Now(),
-					CallContext:      callCtx.GetCallContext(),
-					Type:             EventTypeCallProgress,
-					ChatCompletionID: status.CompletionID,
-					Content:          getEventContent(message.String(), *callCtx),
-				})
+				now := time.Now()
+				lastSentTime, ok := lastSentTimeMap[status.CompletionID]
+				if !ok || now.Sub(lastSentTime) > progressTimeStep {
+					lastSentTimeMap[status.CompletionID] = now
+					monitor.Event(Event{
+						Time:             time.Now(),
+						CallContext:      callCtx.GetCallContext(),
+						Type:             EventTypeCallProgress,
+						ChatCompletionID: status.CompletionID,
+						Content:          getEventContent(message.String(), *callCtx),
+					})
+				}
 			} else {
 				monitor.Event(Event{
 					Time:               time.Now(),
@@ -694,6 +708,7 @@ func streamProgress(callCtx *engine.Context, monitor Monitor) (chan<- types.Comp
 					Usage:              status.Usage,
 					ChatResponseCached: status.Cached,
 				})
+				delete(lastSentTimeMap, status.CompletionID)
 			}
 		}
 	}()
diff --git a/pkg/types/tool.go b/pkg/types/tool.go
index e4b3424a..de5d368c 100644
--- a/pkg/types/tool.go
+++ b/pkg/types/tool.go
@@ -19,6 +19,7 @@ const (
 	DaemonPrefix  = "#!sys.daemon"
 	OpenAPIPrefix = "#!sys.openapi"
 	EchoPrefix    = "#!sys.echo"
+	BreakPrefix   = "#!sys.break"
 	CommandPrefix = "#!"
 )
 
@@ -771,6 +772,10 @@ func (t Tool) IsEcho() bool {
 	return strings.HasPrefix(t.Instructions, EchoPrefix)
 }
 
+func (t Tool) IsBreak() bool {
+	return strings.HasPrefix(t.Instructions, BreakPrefix)
+}
+
 func (t Tool) IsHTTP() bool {
 	return strings.HasPrefix(t.Instructions, "#!http://") ||
 		strings.HasPrefix(t.Instructions, "#!https://")