diff --git a/daiapi.service b/daiapi.service
new file mode 100644
index 0000000..4836a8a
--- /dev/null
+++ b/daiapi.service
@@ -0,0 +1,23 @@
+[Unit]
+Description=DAIAPI HTTP service
+After=network.target
+
+[Service]
+Type=simple
+User=igor
+Group=igor
+WorkingDirectory=/home/igor/prog/daiapi
+ExecStart=/home/igor/prog/daiapi/daiapi
+Restart=on-failure
+RestartSec=3
+Environment=PORT=8000
+Environment=PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/igor/.local/bin
+EnvironmentFile=-/etc/daiapi/daiapi.env
+NoNewPrivileges=true
+KillSignal=SIGINT
+TimeoutStopSec=30
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..f2553eb
--- /dev/null
+++ b/main.go
@@ -0,0 +1,114 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+)
+
+type runRequest struct {
+	Prompt string `json:"prompt"`
+}
+
+type runResponse struct {
+	Success bool        `json:"success"`
+	Answer  *string     `json:"answer"`
+	Usage   interface{} `json:"usage"`
+	Stderr  string      `json:"stderr"`
+}
+
+type event struct {
+	Type  string                 `json:"type"`
+	Item  map[string]interface{} `json:"item"`
+	Usage interface{}            `json:"usage"`
+}
+
+func main() {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/run", runHandler)
+
+	addr := ":8000"
+	if port := os.Getenv("PORT"); port != "" {
+		addr = ":" + port
+	}
+
+	log.Printf("listening on %s", addr)
+	if err := http.ListenAndServe(addr, mux); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func runHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req runRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, "invalid json body", http.StatusBadRequest)
+		return
+	}
+
+	cmd := exec.Command(
+		"codex",
+		"exec",
+		"--skip-git-repo-check",
+		"--full-auto",
+		"--add-dir", "/tmp",
+		"--json",
+		req.Prompt,
+	)
+
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	err := cmd.Run()
+
+	var finalText *string
+	var usage interface{}
+
+	scanner := bufio.NewScanner(bytes.NewReader(stdout.Bytes()))
+	for scanner.Scan() {
+		line := bytes.TrimSpace(scanner.Bytes())
+		if len(line) == 0 {
+			continue
+		}
+
+		var evt event
+		if unmarshalErr := json.Unmarshal(line, &evt); unmarshalErr != nil {
+			continue
+		}
+
+		if evt.Type == "item.completed" {
+			itemType, _ := evt.Item["type"].(string)
+			itemText, _ := evt.Item["text"].(string)
+			if (itemType == "agent_message" || itemType == "message") && itemText != "" {
+				textCopy := itemText
+				finalText = &textCopy
+			}
+		}
+
+		if evt.Type == "turn.completed" {
+			usage = evt.Usage
+		}
+	}
+
+	resp := runResponse{
+		Success: err == nil,
+		Answer:  finalText,
+		Usage:   usage,
+		Stderr:  stderr.String(),
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if encodeErr := json.NewEncoder(w).Encode(resp); encodeErr != nil {
+		http.Error(w, encodeErr.Error(), http.StatusInternalServerError)
+	}
+}