feat: finishing description agent infrastructure on backend

backend/agents/client/client.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
 	"os"
@@ -101,7 +102,7 @@ func CreateAgentClient(options CreateAgentClientOptions) AgentClient {
 
 	return AgentClient{
 		apiKey: apiKey,
-		url:    "https://api.openai.com/v1/chat/completions",
+		url:    "https://router.requesty.ai/v1/chat/completions",
 		Do: func(req *http.Request) (*http.Response, error) {
 			client := &http.Client{}
 			return client.Do(req)
@@ -132,29 +133,29 @@ func (client AgentClient) getRequest(body []byte) (*http.Request, error) {
 func (client AgentClient) Request(req *AgentRequestBody) (AgentResponse, error) {
 	jsonAiRequest, err := json.Marshal(req)
 	if err != nil {
-		return AgentResponse{}, err
+		return AgentResponse{}, fmt.Errorf("Could not format JSON", err)
 	}
 
 	httpRequest, err := client.getRequest(jsonAiRequest)
 	if err != nil {
-		return AgentResponse{}, err
+		return AgentResponse{}, fmt.Errorf("Could not get request", err)
 	}
 
 	resp, err := client.Do(httpRequest)
 	if err != nil {
-		return AgentResponse{}, err
+		return AgentResponse{}, fmt.Errorf("Could not send request", err)
 	}
 
 	response, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return AgentResponse{}, err
+		return AgentResponse{}, fmt.Errorf("Could not read body", err)
 	}
 
 	agentResponse := AgentResponse{}
 	err = json.Unmarshal(response, &agentResponse)
 
 	if err != nil {
-		return AgentResponse{}, err
+		return AgentResponse{}, fmt.Errorf("Could not unmarshal response, response: %s", string(response), err)
 	}
 
 	if len(agentResponse.Choices) != 1 {
@@ -245,7 +246,7 @@ func (client *AgentClient) RunAgent(userId uuid.UUID, imageId uuid.UUID, imageNa
 	request := AgentRequestBody{
 		Tools:       &tools,
 		ToolChoice:  &toolChoice,
-		Model:       "gpt-4.1-mini",
+		Model:       "google/gemini-2.5-flash",
 		RandomSeed:  &seed,
 		Temperature: 0.3,
 		EndToolCall: client.Options.EndToolCall,