diff --git a/README.md b/README.md
index a2e0518..20e828c 100644
--- a/README.md
+++ b/README.md
@@ -46,13 +46,14 @@ web3datacli [command]
 
 ### Available Commands
 
-| Command      | Description                            |
-|--------------|----------------------------------------|
+| Command      | Description                             |
+| ------------ | --------------------------------------- |
+| `arweave`    | 🕸️ Interact with Arweave                 |
 | `encryption` | 🔐 Manage data encryption and decryption |
-| `ipfs`       | 📤 Interact with IPFS                   |
-| `version`    | Show the CLI version                   |
-| `completion` | Generate autocompletion for your shell |
-| `help`       | Help about any command                 |
+| `ipfs`       | 📤 Interact with IPFS                    |
+| `version`    | Show the CLI version                    |
+| `completion` | Generate autocompletion for your shell  |
+| `help`       | Help about any command                  |
 
 ---
 
@@ -61,8 +62,8 @@ web3datacli [command]
 Enable autocompletion for your shell (e.g., bash, zsh):
 
 ```bash
-web3datacli completion bash > /etc/bash_completion.d/web3datacli
-source /etc/bash_completion.d/web3datacli
+web3datacli completion zsh >  ~/.zsh_completions/_web3datacli 
+source ~/.zsh_completions/_web3datacli 
 ```
 
 ---
@@ -75,4 +76,4 @@ MIT License © 2025 F.CORDIER
 
 ## 🤝 Contributions
 
-Feel free to open issues or submit PRs — contributions are welcome!
\ No newline at end of file
+Feel free to open issues or submit PRs — contributions are welcome!
diff --git a/cmd/arweave/arweave.go b/cmd/arweave/arweave.go
new file mode 100644
index 0000000..ffd7d1b
--- /dev/null
+++ b/cmd/arweave/arweave.go
@@ -0,0 +1,142 @@
+package arweave
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	apiBaseURL string
+)
+
+var ArweaveCmd = &cobra.Command{
+	Use:   "arweave",
+	Short: "🕸️ Interact with Arweave",
+}
+
+func init() {
+	ArweaveCmd.AddCommand(arweaveUploadCommand())
+	ArweaveCmd.AddCommand(arweaveDownloadCommand())
+}
+
+func arweaveUploadCommand() *cobra.Command {
+	var filePath string
+
+	cmd := &cobra.Command{
+		Use:   "upload",
+		Short: "Upload a file to Arweave through a relay API",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if filePath == "" {
+				return fmt.Errorf("❌ you must provide a file path with --file")
+			}
+
+			file, err := os.Open(filePath)
+			if err != nil {
+				return fmt.Errorf("cannot open file: %w", err)
+			}
+			defer file.Close()
+
+			var buf bytes.Buffer
+			writer := multipart.NewWriter(&buf)
+			part, err := writer.CreateFormFile("file", filepath.Base(filePath))
+			if err != nil {
+				return fmt.Errorf("cannot create form file: %w", err)
+			}
+
+			if _, errCopy := io.Copy(part, file); errCopy != nil {
+				return fmt.Errorf("failed to copy file data: %w", errCopy)
+			}
+
+			if errClose := writer.Close(); errClose != nil {
+				return fmt.Errorf("failed to close multipart writer: %w", errClose)
+			}
+
+			resp, err := http.Post(apiBaseURL+"/upload", writer.FormDataContentType(), &buf)
+			if err != nil {
+				return fmt.Errorf("upload request failed: %w", err)
+			}
+			defer resp.Body.Close()
+
+			body, _ := io.ReadAll(resp.Body)
+			if resp.StatusCode != http.StatusOK {
+				return fmt.Errorf("arweave upload failed: %s", string(body))
+			}
+
+			var res struct {
+				ArweaveID string `json:"arweaveId"`
+				URL       string `json:"url"`
+			}
+			if err := json.Unmarshal(body, &res); err != nil {
+				return fmt.Errorf("invalid response: %w", err)
+			}
+
+			fmt.Println("✅ Upload successful")
+			fmt.Printf("🆔 Arweave ID: %s\n🔗 URL: %s\n", res.ArweaveID, res.URL)
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVarP(&filePath, "file", "f", "", "Path to the local file to upload")
+	cmd.Flags().StringVarP(&apiBaseURL, "api", "a", "http://localhost:3000", "Base URL of the Arweave relay API (without /upload)")
+
+	return cmd
+}
+
+func arweaveDownloadCommand() *cobra.Command {
+	var id string
+	var output string
+
+	cmd := &cobra.Command{
+		Use:   "download",
+		Short: "Download a file from Arweave using its transaction ID",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if id == "" {
+				return fmt.Errorf("❌ you must provide an Arweave transaction ID with --id")
+			}
+			if output == "" {
+				output = id
+			}
+
+			url := fmt.Sprintf("https://arweave.net/%s", id)
+
+			fmt.Printf("🔗 Downloading from: %s\n📁 Saving to: %s\n", url, output)
+			// #nosec G107 -- ID is validated and used to build a known domain URL
+			resp, err := http.Get(url)
+			if err != nil {
+				return fmt.Errorf("failed to download from Arweave: %w", err)
+			}
+			defer resp.Body.Close()
+
+			if resp.StatusCode != http.StatusOK {
+				body, _ := io.ReadAll(resp.Body)
+				return fmt.Errorf("arweave download failed: %s", string(body))
+			}
+
+			outFile, err := os.Create(output)
+			if err != nil {
+				return fmt.Errorf("cannot create output file: %w", err)
+			}
+			defer outFile.Close()
+
+			if _, err := io.Copy(outFile, resp.Body); err != nil {
+				return fmt.Errorf("error saving file: %w", err)
+			}
+
+			fmt.Println("✅ Download complete")
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVarP(&id, "id", "i", "", "Arweave transaction ID to download (required)")
+	cmd.Flags().StringVarP(&output, "out", "o", "", "Output file path (optional)")
+
+	return cmd
+}
diff --git a/cmd/root.go b/cmd/root.go
index 6adb231..a45f4d9 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"github.com/thewhitewizard/web3data-cli/cmd/arweave"
 	"github.com/thewhitewizard/web3data-cli/cmd/encryption"
 	"github.com/thewhitewizard/web3data-cli/cmd/ipfs"
 	"github.com/thewhitewizard/web3data-cli/cmd/version"
@@ -20,5 +21,6 @@ func Execute() {
 func init() {
 	rootCmd.AddCommand(encryption.EncryptionCmd)
 	rootCmd.AddCommand(ipfs.IPFSCmd)
+	rootCmd.AddCommand(arweave.ArweaveCmd)
 	rootCmd.AddCommand(version.VersionCmd)
 }