diff --git a/DysonNetwork.Develop/Identity/CustomAppController.cs b/DysonNetwork.Develop/Identity/CustomAppController.cs
index 137419b..49c07bb 100644
--- a/DysonNetwork.Develop/Identity/CustomAppController.cs
+++ b/DysonNetwork.Develop/Identity/CustomAppController.cs
@@ -3,6 +3,7 @@ using DysonNetwork.Develop.Project;
 using DysonNetwork.Shared.Proto;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using NodaTime;
 
 namespace DysonNetwork.Develop.Identity;
 
@@ -22,12 +23,36 @@ public class CustomAppController(CustomAppService customApps, DeveloperService d
         CustomAppOauthConfig? OauthConfig
     );
 
+    public record CreateSecretRequest(
+        [MaxLength(4096)] string? Description,
+        TimeSpan? ExpiresIn = null,
+        bool IsOidc = false
+    );
+
+    public record SecretResponse(
+        string Id,
+        string? Secret,
+        string? Description,
+        Instant? ExpiresAt,
+        bool IsOidc,
+        Instant CreatedAt,
+        Instant UpdatedAt
+    );
+
     [HttpGet]
+    [Authorize]
     public async Task<IActionResult> ListApps([FromRoute] string pubName, [FromRoute] Guid projectId)
     {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
         var developer = await ds.GetDeveloperByName(pubName);
         if (developer is null) return NotFound();
 
+        var accountId = Guid.Parse(currentUser.Id);
+        if (!await ds.IsMemberWithRole(developer.PublisherId, accountId, PublisherMemberRole.Viewer))
+            return StatusCode(403, "You must be a viewer of the developer to list custom apps");
+
         var project = await projectService.GetProjectAsync(projectId, developer.Id);
         if (project is null) return NotFound();
 
@@ -36,11 +61,19 @@ public class CustomAppController(CustomAppService customApps, DeveloperService d
     }
 
     [HttpGet("{appId:guid}")]
+    [Authorize]
     public async Task<IActionResult> GetApp([FromRoute] string pubName, [FromRoute] Guid projectId,
         [FromRoute] Guid appId)
     {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+        
         var developer = await ds.GetDeveloperByName(pubName);
         if (developer is null) return NotFound();
+        
+        var accountId = Guid.Parse(currentUser.Id);
+        if (!await ds.IsMemberWithRole(developer.PublisherId, accountId, PublisherMemberRole.Viewer))
+            return StatusCode(403, "You must be a viewer of the developer to list custom apps");
 
         var project = await projectService.GetProjectAsync(projectId, developer.Id);
         if (project is null) return NotFound();
@@ -65,7 +98,7 @@ public class CustomAppController(CustomAppService customApps, DeveloperService d
         var developer = await ds.GetDeveloperByName(pubName);
         if (developer is null)
             return NotFound("Developer not found");
-        
+
         if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
             return StatusCode(403, "You must be an editor of the developer to create a custom app");
 
@@ -164,4 +197,235 @@ public class CustomAppController(CustomAppService customApps, DeveloperService d
 
         return NoContent();
     }
+
+    [HttpGet("{appId:guid}/secrets")]
+    [Authorize]
+    public async Task<IActionResult> ListSecrets(
+        [FromRoute] string pubName,
+        [FromRoute] Guid projectId,
+        [FromRoute] Guid appId)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var developer = await ds.GetDeveloperByName(pubName);
+        if (developer is null)
+            return NotFound("Developer not found");
+
+        if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
+            return StatusCode(403, "You must be an editor of the developer to view app secrets");
+
+        var project = await projectService.GetProjectAsync(projectId, developer.Id);
+        if (project is null)
+            return NotFound("Project not found or you don't have access");
+
+        var app = await customApps.GetAppAsync(appId, projectId);
+        if (app == null)
+            return NotFound("App not found");
+
+        var secrets = await customApps.GetAppSecretsAsync(appId);
+        return Ok(secrets.Select(s => new SecretResponse(
+            s.Id.ToString(),
+            null,
+            s.Description,
+            s.ExpiredAt,
+            s.IsOidc,
+            s.CreatedAt,
+            s.UpdatedAt
+        )));
+    }
+
+    [HttpPost("{appId:guid}/secrets")]
+    [Authorize]
+    public async Task<IActionResult> CreateSecret(
+        [FromRoute] string pubName,
+        [FromRoute] Guid projectId,
+        [FromRoute] Guid appId,
+        [FromBody] CreateSecretRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var developer = await ds.GetDeveloperByName(pubName);
+        if (developer is null)
+            return NotFound("Developer not found");
+
+        if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
+            return StatusCode(403, "You must be an editor of the developer to create app secrets");
+
+        var project = await projectService.GetProjectAsync(projectId, developer.Id);
+        if (project is null)
+            return NotFound("Project not found or you don't have access");
+
+        var app = await customApps.GetAppAsync(appId, projectId);
+        if (app == null)
+            return NotFound("App not found");
+
+        try
+        {
+            var secret = await customApps.CreateAppSecretAsync(new CustomAppSecret
+            {
+                AppId = appId,
+                Description = request.Description,
+                ExpiredAt = request.ExpiresIn.HasValue
+                    ? NodaTime.SystemClock.Instance.GetCurrentInstant()
+                        .Plus(Duration.FromTimeSpan(request.ExpiresIn.Value))
+                    : (NodaTime.Instant?)null,
+                IsOidc = request.IsOidc
+            });
+
+            return CreatedAtAction(
+                nameof(GetSecret),
+                new { pubName, projectId, appId, secretId = secret.Id },
+                new SecretResponse(
+                    secret.Id.ToString(),
+                    secret.Secret,
+                    secret.Description,
+                    secret.ExpiredAt,
+                    secret.IsOidc,
+                    secret.CreatedAt,
+                    secret.UpdatedAt
+                )
+            );
+        }
+        catch (InvalidOperationException ex)
+        {
+            return BadRequest(ex.Message);
+        }
+    }
+
+    [HttpGet("{appId:guid}/secrets/{secretId:guid}")]
+    [Authorize]
+    public async Task<IActionResult> GetSecret(
+        [FromRoute] string pubName,
+        [FromRoute] Guid projectId,
+        [FromRoute] Guid appId,
+        [FromRoute] Guid secretId)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var developer = await ds.GetDeveloperByName(pubName);
+        if (developer is null)
+            return NotFound("Developer not found");
+
+        if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
+            return StatusCode(403, "You must be an editor of the developer to view app secrets");
+
+        var project = await projectService.GetProjectAsync(projectId, developer.Id);
+        if (project is null)
+            return NotFound("Project not found or you don't have access");
+
+        var app = await customApps.GetAppAsync(appId, projectId);
+        if (app == null)
+            return NotFound("App not found");
+
+        var secret = await customApps.GetAppSecretAsync(secretId, appId);
+        if (secret == null)
+            return NotFound("Secret not found");
+
+        return Ok(new SecretResponse(
+            secret.Id.ToString(),
+            null,
+            secret.Description,
+            secret.ExpiredAt,
+            secret.IsOidc,
+            secret.CreatedAt,
+            secret.UpdatedAt
+        ));
+    }
+
+    [HttpDelete("{appId:guid}/secrets/{secretId:guid}")]
+    [Authorize]
+    public async Task<IActionResult> DeleteSecret(
+        [FromRoute] string pubName,
+        [FromRoute] Guid projectId,
+        [FromRoute] Guid appId,
+        [FromRoute] Guid secretId)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var developer = await ds.GetDeveloperByName(pubName);
+        if (developer is null)
+            return NotFound("Developer not found");
+
+        if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
+            return StatusCode(403, "You must be an editor of the developer to delete app secrets");
+
+        var project = await projectService.GetProjectAsync(projectId, developer.Id);
+        if (project is null)
+            return NotFound("Project not found or you don't have access");
+
+        var app = await customApps.GetAppAsync(appId, projectId);
+        if (app == null)
+            return NotFound("App not found");
+
+        var secret = await customApps.GetAppSecretAsync(secretId, appId);
+        if (secret == null)
+            return NotFound("Secret not found");
+
+        var result = await customApps.DeleteAppSecretAsync(secretId, appId);
+        if (!result)
+            return NotFound("Failed to delete secret");
+
+        return NoContent();
+    }
+
+    [HttpPost("{appId:guid}/secrets/{secretId:guid}/rotate")]
+    [Authorize]
+    public async Task<IActionResult> RotateSecret(
+        [FromRoute] string pubName,
+        [FromRoute] Guid projectId,
+        [FromRoute] Guid appId,
+        [FromRoute] Guid secretId,
+        [FromBody] CreateSecretRequest? request = null)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var developer = await ds.GetDeveloperByName(pubName);
+        if (developer is null)
+            return NotFound("Developer not found");
+
+        if (!await ds.IsMemberWithRole(developer.PublisherId, Guid.Parse(currentUser.Id), PublisherMemberRole.Editor))
+            return StatusCode(403, "You must be an editor of the developer to rotate app secrets");
+
+        var project = await projectService.GetProjectAsync(projectId, developer.Id);
+        if (project is null)
+            return NotFound("Project not found or you don't have access");
+
+        var app = await customApps.GetAppAsync(appId, projectId);
+        if (app == null)
+            return NotFound("App not found");
+
+        try
+        {
+            var secret = await customApps.RotateAppSecretAsync(new CustomAppSecret
+            {
+                Id = secretId,
+                AppId = appId,
+                Description = request?.Description,
+                ExpiredAt = request?.ExpiresIn.HasValue == true
+                    ? NodaTime.SystemClock.Instance.GetCurrentInstant()
+                        .Plus(Duration.FromTimeSpan(request.ExpiresIn.Value))
+                    : (NodaTime.Instant?)null,
+                IsOidc = request?.IsOidc ?? false
+            });
+
+            return Ok(new SecretResponse(
+                secret.Id.ToString(),
+                secret.Secret,
+                secret.Description,
+                secret.ExpiredAt,
+                secret.IsOidc,
+                secret.CreatedAt,
+                secret.UpdatedAt
+            ));
+        }
+        catch (InvalidOperationException ex)
+        {
+            return BadRequest(ex.Message);
+        }
+    }
 }
\ No newline at end of file
diff --git a/DysonNetwork.Develop/Identity/CustomAppService.cs b/DysonNetwork.Develop/Identity/CustomAppService.cs
index c763402..313d0df 100644
--- a/DysonNetwork.Develop/Identity/CustomAppService.cs
+++ b/DysonNetwork.Develop/Identity/CustomAppService.cs
@@ -2,6 +2,8 @@ using DysonNetwork.Develop.Project;
 using DysonNetwork.Shared.Data;
 using DysonNetwork.Shared.Proto;
 using Microsoft.EntityFrameworkCore;
+using System.Security.Cryptography;
+using System.Text;
 
 namespace DysonNetwork.Develop.Identity;
 
@@ -94,6 +96,87 @@ public class CustomAppService(
         return await query.FirstOrDefaultAsync(a => a.Id == id);
     }
 
+    public async Task<List<CustomAppSecret>> GetAppSecretsAsync(Guid appId)
+    {
+        return await db.CustomAppSecrets
+            .Where(s => s.AppId == appId)
+            .OrderByDescending(s => s.CreatedAt)
+            .ToListAsync();
+    }
+
+    public async Task<CustomAppSecret?> GetAppSecretAsync(Guid secretId, Guid appId)
+    {
+        return await db.CustomAppSecrets
+            .FirstOrDefaultAsync(s => s.Id == secretId && s.AppId == appId);
+    }
+
+    public async Task<CustomAppSecret> CreateAppSecretAsync(CustomAppSecret secret)
+    {
+        if (string.IsNullOrWhiteSpace(secret.Secret))
+        {
+            // Generate a new random secret if not provided
+            secret.Secret = GenerateRandomSecret();
+        }
+
+        secret.Id = Guid.NewGuid();
+        secret.CreatedAt = NodaTime.SystemClock.Instance.GetCurrentInstant();
+        secret.UpdatedAt = secret.CreatedAt;
+
+        db.CustomAppSecrets.Add(secret);
+        await db.SaveChangesAsync();
+
+        return secret;
+    }
+
+    public async Task<bool> DeleteAppSecretAsync(Guid secretId, Guid appId)
+    {
+        var secret = await db.CustomAppSecrets
+            .FirstOrDefaultAsync(s => s.Id == secretId && s.AppId == appId);
+
+        if (secret == null)
+            return false;
+
+        db.CustomAppSecrets.Remove(secret);
+        await db.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<CustomAppSecret> RotateAppSecretAsync(CustomAppSecret secretUpdate)
+    {
+        var existingSecret = await db.CustomAppSecrets
+            .FirstOrDefaultAsync(s => s.Id == secretUpdate.Id && s.AppId == secretUpdate.AppId);
+
+        if (existingSecret == null)
+            throw new InvalidOperationException("Secret not found");
+
+        // Update the existing secret with new values
+        existingSecret.Secret = GenerateRandomSecret();
+        existingSecret.Description = secretUpdate.Description ?? existingSecret.Description;
+        existingSecret.ExpiredAt = secretUpdate.ExpiredAt ?? existingSecret.ExpiredAt;
+        existingSecret.IsOidc = secretUpdate.IsOidc;
+        existingSecret.UpdatedAt = NodaTime.SystemClock.Instance.GetCurrentInstant();
+
+        await db.SaveChangesAsync();
+        return existingSecret;
+    }
+
+    private static string GenerateRandomSecret(int length = 64)
+    {
+        const string valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-._~+";
+        var res = new StringBuilder();
+        using (var rng = RandomNumberGenerator.Create())
+        {
+            var uintBuffer = new byte[sizeof(uint)];
+            while (length-- > 0)
+            {
+                rng.GetBytes(uintBuffer);
+                var num = BitConverter.ToUInt32(uintBuffer, 0);
+                res.Append(valid[(int)(num % (uint)valid.Length)]);
+            }
+        }
+        return res.ToString();
+    }
+
     public async Task<List<CustomApp>> GetAppsByProjectAsync(Guid projectId)
     {
         return await db.CustomApps