Add modify

api/client.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"sort"
 	"time"
 )
 
@@ -105,6 +106,11 @@ func (c *Client) ListInstancesWithIPUpdateCtx(ctx context.Context) ([]Instance,
 		instances = append(instances, instance)
 	}
 
+	// Sort instances by ID for consistent ordering
+	sort.Slice(instances, func(i, j int) bool {
+		return instances[i].ID < instances[j].ID
+	})
+
 	return instances, nil
 }
 
@@ -275,6 +281,11 @@ func (c *Client) ListInstances() ([]Instance, error) {
 		instances = append(instances, instance)
 	}
 
+	// Sort instances by ID for consistent ordering
+	sort.Slice(instances, func(i, j int) bool {
+		return instances[i].ID < instances[j].ID
+	})
+
 	return instances, nil
 }
 
@@ -395,6 +406,55 @@ func (c *Client) DeleteInstance(instanceID string) (*DeleteInstanceResponse, err
 	}, nil
 }
 
+// ModifyInstance modifies an existing instance configuration
+func (c *Client) ModifyInstance(instanceID string, req InstanceModifyRequest) (*InstanceModifyResponse, error) {
+	jsonData, err := json.Marshal(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	url := fmt.Sprintf("%s/v1/instances/%s/modify", c.baseURL, instanceID)
+	httpReq, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	c.setHeaders(httpReq)
+
+	resp, err := c.httpClient.Do(httpReq)
+	if err != nil {
+		return nil, fmt.Errorf("failed to make request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response: %w", err)
+	}
+
+	switch resp.StatusCode {
+	case 401:
+		return nil, fmt.Errorf("authentication failed: invalid token")
+	case 404:
+		return nil, fmt.Errorf("instance not found")
+	case 400:
+		return nil, fmt.Errorf("invalid request: %s", string(body))
+	case 409:
+		return nil, fmt.Errorf("instance cannot be modified (may not be in RUNNING state)")
+	case 200, 201, 202:
+		// Success - continue to parse
+	default:
+		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
+	}
+
+	var modifyResp InstanceModifyResponse
+	if err := json.Unmarshal(body, &modifyResp); err != nil {
+		return nil, fmt.Errorf("failed to parse response: %w", err)
+	}
+
+	return &modifyResp, nil
+}
+
 // AddSSHKey generates and adds SSH keypair to instance
 func (c *Client) AddSSHKey(instanceID string) (*AddSSHKeyResponse, error) {
 	return c.AddSSHKeyCtx(context.Background(), instanceID)

api/types.go

@@ -62,6 +62,23 @@ type DeleteInstanceResponse struct {
 	Success bool   `json:"success"`
 }
 
+type InstanceModifyRequest struct {
+	CpuCores   *int    `json:"cpu_cores,omitempty"`
+	GpuType    *string `json:"gpu_type,omitempty"`
+	NumGpus    *int    `json:"num_gpus,omitempty"`
+	DiskSizeGb *int    `json:"disk_size_gb,omitempty"`
+	Mode       *string `json:"mode,omitempty"`
+}
+
+type InstanceModifyResponse struct {
+	Identifier   string  `json:"identifier"`
+	InstanceName string  `json:"instance_name"`
+	Mode         *string `json:"mode,omitempty"`
+	GpuType      *string `json:"gpu_type,omitempty"`
+	NumGpus      *int    `json:"num_gpus,omitempty"`
+	Message      string  `json:"message,omitempty"`
+}
+
 type AddSSHKeyResponse struct {
 	UUID string `json:"uuid"`
 	Key  string `json:"key"`