diff --git a/Core/LibPoint.Application/Abstractions/IRepository.cs b/Core/LibPoint.Application/Abstractions/IRepository.cs
index c20aa50..ddf11d0 100644
--- a/Core/LibPoint.Application/Abstractions/IRepository.cs
+++ b/Core/LibPoint.Application/Abstractions/IRepository.cs
@@ -13,7 +13,7 @@ public interface IRepository<T> where T : class
         DbSet<T> Table { get; }
         Task<List<T>> GetAllAsync(Expression<Func<T, bool>> expression = null, bool tracking = false, params Expression<Func<T, object>>[] includeEntity);
         Task<T> GetAsync(Expression<Func<T, bool>> expression = null, bool tracking = false, params Expression<Func<T, object>>[] includeEntity);
-        Task<T> GetByIdAsync(int id, bool tracking = false);
+        Task<T> GetByIdAsync(Guid id, bool tracking = false);
         Task<bool> AddAsync(T entity);
         Task AddRangeAsync(List<T> entites);
         bool Update(T entity);
diff --git a/Core/LibPoint.Application/Features/Authors/Commands/CreateAuthorCommandRequest.cs b/Core/LibPoint.Application/Features/Authors/Commands/CreateAuthorCommandRequest.cs
new file mode 100644
index 0000000..dc889a0
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Commands/CreateAuthorCommandRequest.cs
@@ -0,0 +1,13 @@
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class CreateAuthorCommandRequest:IRequest<ResponseModel<Guid>>
+{
+    public string Name { get; set; }
+    public string Surname { get; set; }
+    public string? Bio { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public DateTime? DateOfDeath { get; set; }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Commands/RemoveAuthorCommandRequest.cs b/Core/LibPoint.Application/Features/Authors/Commands/RemoveAuthorCommandRequest.cs
new file mode 100644
index 0000000..d3b70f6
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Commands/RemoveAuthorCommandRequest.cs
@@ -0,0 +1,15 @@
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class RemoveAuthorCommandRequest:IRequest<ResponseModel<Guid>>
+{ 
+    public RemoveAuthorCommandRequest(Guid id)
+    {
+        Id = id;
+    }
+    public Guid Id { get; set; }
+
+   
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Commands/UpdateAuthorCommandRequest.cs b/Core/LibPoint.Application/Features/Authors/Commands/UpdateAuthorCommandRequest.cs
new file mode 100644
index 0000000..329ce52
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Commands/UpdateAuthorCommandRequest.cs
@@ -0,0 +1,14 @@
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class UpdateAuthorCommandRequest: IRequest <ResponseModel<Guid>>
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; }
+    public string Surname { get; set; }
+    public string? Bio { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public DateTime? DateOfDeath { get; set; }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Handlers/CreateAuthorCommandHandler.cs b/Core/LibPoint.Application/Features/Authors/Handlers/CreateAuthorCommandHandler.cs
new file mode 100644
index 0000000..e742f1e
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Handlers/CreateAuthorCommandHandler.cs
@@ -0,0 +1,36 @@
+using LibPoint.Application.Abstractions;
+using LibPoint.Domain.Entities;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class CreateAuthorCommandHandler:IRequestHandler<CreateAuthorCommandRequest, ResponseModel<Guid>>
+{
+    private readonly IRepository<Author> _repository;
+
+    public CreateAuthorCommandHandler(IRepository<Author> repository)
+    {
+        _repository = repository;
+    }
+    
+    public async Task<ResponseModel<Guid>> Handle(CreateAuthorCommandRequest request, CancellationToken cancellationToken)
+    {
+        var author = new Author
+        {
+            Name = request.Name,
+            Surname = request.Surname,
+            Bio = request.Bio,
+            DateOfBirth = request.DateOfBirth,
+            DateOfDeath = request.DateOfDeath, Books = new System.Collections.Generic.HashSet<Book>()
+
+        };
+        var addResult=await _repository.AddAsync(author);
+
+        if (!addResult)
+            return new ResponseModel<Guid>("Author could not be created", 400);
+
+        await _repository.SaveChangesAsync();
+        return new ResponseModel<Guid>(author.Id);
+    }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Handlers/GetAllAuthorsQueryHandler.cs b/Core/LibPoint.Application/Features/Authors/Handlers/GetAllAuthorsQueryHandler.cs
new file mode 100644
index 0000000..eea3f4b
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Handlers/GetAllAuthorsQueryHandler.cs
@@ -0,0 +1,38 @@
+using AutoMapper;
+using LibPoint.Application.Abstractions;
+using LibPoint.Domain.Entities;
+using LibPoint.Domain.Models.Author;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Queries;
+
+public class GetAllAuthorsQueryHandler:IRequestHandler<GetAllAuthorsQueryRequest, ResponseModel<List<AuthorModel>>>
+{
+    private readonly IRepository<Author> _repository;
+
+    public GetAllAuthorsQueryHandler(IRepository<Author> repository)
+    {
+        _repository = repository;
+    }
+    
+    public async Task<ResponseModel<List<AuthorModel>>> Handle(GetAllAuthorsQueryRequest request, CancellationToken cancellationToken)
+    {
+        var authors = await _repository.GetAllAsync();
+        
+        if(authors == null)
+         return new ResponseModel<List<AuthorModel>>("No authors found", 404 );
+
+        var authorModels = authors.Select(author => new AuthorModel
+        {
+            Id = author.Id,
+            Name = author.Name,
+            Surname = author.Surname,
+            Bio = author.Bio,
+            DateOfBirth = author.DateOfBirth,
+            DateOfDeath = author.DateOfDeath,
+        }).ToList();
+        
+        return new ResponseModel<List<AuthorModel>>(authorModels, 200);
+    }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Handlers/GetAuthorByIdQueryHandler.cs b/Core/LibPoint.Application/Features/Authors/Handlers/GetAuthorByIdQueryHandler.cs
new file mode 100644
index 0000000..489f24b
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Handlers/GetAuthorByIdQueryHandler.cs
@@ -0,0 +1,37 @@
+using AutoMapper;
+using LibPoint.Application.Abstractions;
+using LibPoint.Domain.Entities;
+using LibPoint.Domain.Models.Author;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Queries;
+
+public class GetAuthorByIdQueryHandler:IRequestHandler<GetAuthorByIdQueryRequest, ResponseModel<AuthorModel>>
+{
+    private readonly IRepository<Author> _repository;
+    public GetAuthorByIdQueryHandler(IRepository<Author> repository)
+    {
+        _repository = repository;
+    }
+
+
+    public async Task<ResponseModel<AuthorModel>> Handle(GetAuthorByIdQueryRequest request, CancellationToken cancellationToken)
+    {
+        var author = await _repository.GetByIdAsync(request.Id);
+        if (author == null)
+         return new ResponseModel<AuthorModel>("Author not found", 404 );
+
+        var authorModel = new AuthorModel
+        {
+            Id = author.Id,
+            Name = author.Name,
+            Surname = author.Surname,
+            Bio = author.Bio,
+            DateOfBirth = author.DateOfBirth,
+            DateOfDeath = author.DateOfDeath,
+        };
+        
+        return new ResponseModel<AuthorModel>(authorModel,  200);
+    }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Handlers/RemoveAuthorCommandHandler.cs b/Core/LibPoint.Application/Features/Authors/Handlers/RemoveAuthorCommandHandler.cs
new file mode 100644
index 0000000..e27ada5
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Handlers/RemoveAuthorCommandHandler.cs
@@ -0,0 +1,27 @@
+using LibPoint.Application.Abstractions;
+using LibPoint.Domain.Entities;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class RemoveAuthorCommandHandler:IRequestHandler<RemoveAuthorCommandRequest, ResponseModel<Guid>>
+{
+    private readonly IRepository<Author> _repository;
+
+    public RemoveAuthorCommandHandler(IRepository<Author> repository)
+    {
+        _repository = repository;
+    }
+    public async Task<ResponseModel<Guid>> Handle(RemoveAuthorCommandRequest request, CancellationToken cancellationToken)
+    {
+        var author =await _repository.GetByIdAsync(request.Id);
+
+        if (author==null)
+            return new ResponseModel<Guid>("Author not found or already removed", 404);
+        
+        var deleteauthor=_repository.Delete(author);
+        await _repository.SaveChangesAsync();
+        return new ResponseModel<Guid>(author.Id);
+    }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Handlers/UpdateAuthorCommandHandler.cs b/Core/LibPoint.Application/Features/Authors/Handlers/UpdateAuthorCommandHandler.cs
new file mode 100644
index 0000000..f866421
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Handlers/UpdateAuthorCommandHandler.cs
@@ -0,0 +1,33 @@
+using LibPoint.Application.Abstractions;
+using LibPoint.Domain.Entities;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Commands;
+
+public class UpdateAuthorCommandHandler:IRequestHandler<UpdateAuthorCommandRequest, ResponseModel<Guid>>
+{
+    private readonly IRepository<Author> _repository;
+
+    public UpdateAuthorCommandHandler(IRepository<Author> repository)
+    {
+        _repository = repository;
+    }
+    
+    public async Task<ResponseModel<Guid>> Handle(UpdateAuthorCommandRequest request, CancellationToken cancellationToken)
+    {
+        var author = await _repository.GetByIdAsync(request.Id);
+        if (author == null)
+            return new ResponseModel<Guid>("Author not found",404);
+        
+        author.Name = request.Name;
+        author.Surname = request.Surname;
+        author.Bio = request.Bio;
+        author.DateOfBirth = request.DateOfBirth;
+        author.DateOfDeath = request.DateOfDeath;
+        
+        await _repository.SaveChangesAsync();
+        return new ResponseModel<Guid>(author.Id);
+    }
+    
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Queries/GetAllAuthorsQueryRequest.cs b/Core/LibPoint.Application/Features/Authors/Queries/GetAllAuthorsQueryRequest.cs
new file mode 100644
index 0000000..4ed85ca
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Queries/GetAllAuthorsQueryRequest.cs
@@ -0,0 +1,10 @@
+using LibPoint.Domain.Models.Author;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Queries;
+
+public class GetAllAuthorsQueryRequest:IRequest<ResponseModel<List<AuthorModel>>>
+{
+    
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Queries/GetAuthorByIdQueryRequest.cs b/Core/LibPoint.Application/Features/Authors/Queries/GetAuthorByIdQueryRequest.cs
new file mode 100644
index 0000000..16c90fc
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Queries/GetAuthorByIdQueryRequest.cs
@@ -0,0 +1,16 @@
+using LibPoint.Domain.Models.Author;
+using LibPoint.Domain.Models.Responses;
+using MediatR;
+
+namespace LibPoint.Application.Features.Authors.Queries;
+
+public class GetAuthorByIdQueryRequest:IRequest<ResponseModel<AuthorModel>>
+{
+    public Guid Id { get; set; }
+    
+    public GetAuthorByIdQueryRequest(Guid id)
+    {
+        Id = id;
+    }
+        
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Results/GetAllAuthorsQueryResult.cs b/Core/LibPoint.Application/Features/Authors/Results/GetAllAuthorsQueryResult.cs
new file mode 100644
index 0000000..0234fb5
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Results/GetAllAuthorsQueryResult.cs
@@ -0,0 +1,11 @@
+namespace LibPoint.Application.Features.Authors.Results;
+
+public class GetAllAuthorsQueryResult
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; }
+    public string Surname { get; set; }
+    public string? Bio { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public DateTime? DateOfDeath { get; set; }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Application/Features/Authors/Results/GetAuthorByIdQueryResult.cs b/Core/LibPoint.Application/Features/Authors/Results/GetAuthorByIdQueryResult.cs
new file mode 100644
index 0000000..0450adb
--- /dev/null
+++ b/Core/LibPoint.Application/Features/Authors/Results/GetAuthorByIdQueryResult.cs
@@ -0,0 +1,11 @@
+namespace LibPoint.Application.Features.Authors.Results;
+
+public class GetAuthorByIdQueryResult
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; }
+    public string Surname { get; set; }
+    public string? Bio { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public DateTime? DateOfDeath { get; set; }
+}
\ No newline at end of file
diff --git a/Core/LibPoint.Domain/Models/Authors/AuthorModel.cs b/Core/LibPoint.Domain/Models/Authors/AuthorModel.cs
new file mode 100644
index 0000000..781a1c3
--- /dev/null
+++ b/Core/LibPoint.Domain/Models/Authors/AuthorModel.cs
@@ -0,0 +1,16 @@
+using LibPoint.Domain.Entities;
+
+namespace LibPoint.Domain.Models.Author;
+
+public class AuthorModel
+{
+    public Guid Id { get; set; }               // Yazarın benzersiz kimliği
+    public string Name { get; set; }
+    public string Surname { get; set; }
+    public string? Bio { get; set; }
+    public DateTime? DateOfBirth { get; set; }
+    public DateTime? DateOfDeath { get; set; }
+
+    public ICollection<Book>Books { get; set; }
+}
+
diff --git a/Infrastructure/LibPoint.Persistence/Services/Repository.cs b/Infrastructure/LibPoint.Persistence/Services/Repository.cs
index 54b85e0..b9a64c1 100644
--- a/Infrastructure/LibPoint.Persistence/Services/Repository.cs
+++ b/Infrastructure/LibPoint.Persistence/Services/Repository.cs
@@ -97,7 +97,7 @@ public async Task<T> GetAsync(Expression<Func<T, bool>> expression = null, bool
             return await query.SingleOrDefaultAsync();
         }
 
-        public async Task<T> GetByIdAsync(int id, bool tracking = false)
+        public async Task<T> GetByIdAsync(Guid id, bool tracking = false)
         {
             var query = Table.AsQueryable();
 
diff --git a/Presentation/LibPoint.API/Controllers/AuthorController.cs b/Presentation/LibPoint.API/Controllers/AuthorController.cs
new file mode 100644
index 0000000..126aecb
--- /dev/null
+++ b/Presentation/LibPoint.API/Controllers/AuthorController.cs
@@ -0,0 +1,53 @@
+using LibPoint.Application.Features.Authors.Commands;
+using LibPoint.Application.Features.Authors.Queries;
+using MediatR;
+using Microsoft.AspNetCore.Mvc;
+
+namespace LibPoint.API.Controllers;
+
+[Route("api/[controller]")]
+[ApiController]
+public class AuthorController: ControllerBase
+{
+    private readonly IMediator _mediator;
+
+    public AuthorController(IMediator mediator)
+    {
+        _mediator = mediator;
+    }
+    [HttpPost("create-author")]
+    public async Task<IActionResult> CreateAuthor([FromBody] CreateAuthorCommandRequest request)
+    {
+        var response = await _mediator.Send(request);
+        return response.Success ? Ok(response) : BadRequest(response);
+    }
+
+    [HttpPut("update-author")]
+    public async Task<IActionResult> UpdateAuthor([FromBody] UpdateAuthorCommandRequest request)
+    {
+        var response = await _mediator.Send(request);
+        return response.Success ? Ok(response) : BadRequest(response);
+    }
+
+    [HttpDelete("remove-author")]
+    public async Task<IActionResult> RemoveAuthor([FromQuery] Guid id)
+    {
+        var response = await _mediator.Send(new RemoveAuthorCommandRequest(id));
+        return response.Success ? Ok(response) : BadRequest(response);
+    }
+
+    [HttpGet("get-author-by-id")]
+    public async Task<IActionResult> GetAuthorById([FromQuery] Guid id)
+    {
+        var response = await _mediator.Send(new GetAuthorByIdQueryRequest(id));
+        return response.Success ? Ok(response) : NotFound(response);
+    }
+
+    [HttpGet("get-all-authors")]
+    public async Task<IActionResult> GetAllAuthors()
+    {
+        var response = await _mediator.Send(new GetAllAuthorsQueryRequest());
+        return response.Success ? Ok(response) : BadRequest(response);
+    }
+    
+}
\ No newline at end of file