diff --git a/OutlineKit/Sources/OutlineKit/Caching/CachingOutlineAPIClient.swift b/OutlineKit/Sources/OutlineKit/Caching/CachingOutlineAPIClient.swift
index 9ec88a5..4f59bf3 100644
--- a/OutlineKit/Sources/OutlineKit/Caching/CachingOutlineAPIClient.swift
+++ b/OutlineKit/Sources/OutlineKit/Caching/CachingOutlineAPIClient.swift
@@ -343,10 +343,18 @@ public actor CachingOutlineAPIClient: OutlineAPIClient {
         try await live.uploadAttachmentFile(result, fileData: fileData)
     }
 
+    public func deleteAttachment(id: String) async throws {
+        try await live.deleteAttachment(id: id)
+    }
+
     public func updateUserAvatar(_ request: UpdateUserAvatarRequest) async throws -> OutlineUser {
         try await live.updateUserAvatar(request)
     }
 
+    public func updateUserName(_ request: UpdateUserNameRequest) async throws -> OutlineUser {
+        try await live.updateUserName(request)
+    }
+
     // MARK: - Sync management (Settings surface)
 
     public func pendingOperations() async -> [PendingOperationSummary] {
diff --git a/OutlineKit/Sources/OutlineKit/Core/OutlineAPIClient.swift b/OutlineKit/Sources/OutlineKit/Core/OutlineAPIClient.swift
index 53307ca..21f18d9 100644
--- a/OutlineKit/Sources/OutlineKit/Core/OutlineAPIClient.swift
+++ b/OutlineKit/Sources/OutlineKit/Core/OutlineAPIClient.swift
@@ -75,6 +75,12 @@ public protocol OutlineAPIClient: Sendable {
     /// target. See `OutlineAttachment`/`CreateAttachmentResult`.
     func createAttachment(_ request: CreateAttachmentRequest) async throws -> CreateAttachmentResult
     func uploadAttachmentFile(_ result: CreateAttachmentResult, fileData: Data) async throws
+    /// Best-effort — matches the shape every other simple `id`-only delete
+    /// in this API uses (`pins.delete`, `stars.delete`, …), not confirmed
+    /// against a live server specifically for attachments yet.
+    func deleteAttachment(id: String) async throws
     /// `users.update`, avatar only. See `UpdateUserAvatarRequest`.
     func updateUserAvatar(_ request: UpdateUserAvatarRequest) async throws -> OutlineUser
+    /// `users.update`, name only. See `UpdateUserNameRequest`.
+    func updateUserName(_ request: UpdateUserNameRequest) async throws -> OutlineUser
 }
diff --git a/OutlineKit/Sources/OutlineKit/LiveOutlineAPIClient.swift b/OutlineKit/Sources/OutlineKit/LiveOutlineAPIClient.swift
index 579d744..444a11c 100644
--- a/OutlineKit/Sources/OutlineKit/LiveOutlineAPIClient.swift
+++ b/OutlineKit/Sources/OutlineKit/LiveOutlineAPIClient.swift
@@ -278,10 +278,18 @@ public actor LiveOutlineAPIClient: OutlineAPIClient {
         }
     }
 
+    public func deleteAttachment(id: String) async throws {
+        try await postForSuccess("attachments.delete", body: StarIDParams(id: id))
+    }
+
     public func updateUserAvatar(_ request: UpdateUserAvatarRequest) async throws -> OutlineUser {
         try await post("users.update", body: request)
     }
 
+    public func updateUserName(_ request: UpdateUserNameRequest) async throws -> OutlineUser {
+        try await post("users.update", body: request)
+    }
+
     private func post<Body: Encodable, Response: Decodable>(_ path: String, body: Body) async throws -> Response {
         guard let token = try? tokenStore.token() else {
             throw OutlineAPIError.tokenUnavailable
diff --git a/OutlineKit/Sources/OutlineKit/Requests/UpdateUserNameRequest.swift b/OutlineKit/Sources/OutlineKit/Requests/UpdateUserNameRequest.swift
new file mode 100644
index 0000000..5857409
--- /dev/null
+++ b/OutlineKit/Sources/OutlineKit/Requests/UpdateUserNameRequest.swift
@@ -0,0 +1,12 @@
+import Foundation
+
+/// `users.update`, name only.
+public struct UpdateUserNameRequest: Encodable, Sendable {
+    public let id: String
+    public let name: String
+
+    public init(id: String, name: String) {
+        self.id = id
+        self.name = name
+    }
+}
diff --git a/OutlineKit/Tests/OutlineKitTests/CachingOutlineAPIClientTests.swift b/OutlineKit/Tests/OutlineKitTests/CachingOutlineAPIClientTests.swift
index 339efa8..8256a1d 100644
--- a/OutlineKit/Tests/OutlineKitTests/CachingOutlineAPIClientTests.swift
+++ b/OutlineKit/Tests/OutlineKitTests/CachingOutlineAPIClientTests.swift
@@ -91,7 +91,9 @@ private final class StubOutlineAPIClient: OutlineAPIClient, @unchecked Sendable
     func currentUser() async throws -> OutlineUser { throw NotStubbed() }
     func createAttachment(_ request: CreateAttachmentRequest) async throws -> CreateAttachmentResult { throw NotStubbed() }
     func uploadAttachmentFile(_ result: CreateAttachmentResult, fileData: Data) async throws { throw NotStubbed() }
+    func deleteAttachment(id: String) async throws { throw NotStubbed() }
     func updateUserAvatar(_ request: UpdateUserAvatarRequest) async throws -> OutlineUser { throw NotStubbed() }
+    func updateUserName(_ request: UpdateUserNameRequest) async throws -> OutlineUser { throw NotStubbed() }
 }
 
 private struct StubTransportError: Error {}
diff --git a/OutlineKit/Tests/OutlineKitTests/LiveOutlineAPIClientTests.swift b/OutlineKit/Tests/OutlineKitTests/LiveOutlineAPIClientTests.swift
index 74a6aad..3627531 100644
--- a/OutlineKit/Tests/OutlineKitTests/LiveOutlineAPIClientTests.swift
+++ b/OutlineKit/Tests/OutlineKitTests/LiveOutlineAPIClientTests.swift
@@ -1051,6 +1051,46 @@ final class LiveOutlineAPIClientTests: XCTestCase {
         XCTAssertTrue(sentJSON.contains("\"id\":\"user-1\""))
     }
 
+    func testUpdateUserNameSendsRequestAndDecodesResult() async throws {
+        let httpClient = MockHTTPClient()
+        httpClient.responseData = """
+        {
+            "data": {
+                "id": "user-1",
+                "name": "New Name"
+            }
+        }
+        """.data(using: .utf8)!
+
+        let client = LiveOutlineAPIClient(
+            configuration: OutlineConfiguration(baseURL: URL(string: "https://outline.example.com")!),
+            tokenStore: StaticTokenStore(),
+            httpClient: httpClient
+        )
+
+        let user = try await client.updateUserName(UpdateUserNameRequest(id: "user-1", name: "New Name"))
+
+        XCTAssertEqual(user.name, "New Name")
+        XCTAssertEqual(httpClient.lastRequest?.url?.path, "/api/users.update")
+    }
+
+    func testDeleteAttachmentSendsRequest() async throws {
+        let httpClient = MockHTTPClient()
+        httpClient.responseData = """
+        { "success": true }
+        """.data(using: .utf8)!
+
+        let client = LiveOutlineAPIClient(
+            configuration: OutlineConfiguration(baseURL: URL(string: "https://outline.example.com")!),
+            tokenStore: StaticTokenStore(),
+            httpClient: httpClient
+        )
+
+        try await client.deleteAttachment(id: "attach-1")
+
+        XCTAssertEqual(httpClient.lastRequest?.url?.path, "/api/attachments.delete")
+    }
+
     func testCreateAttachmentDecodesUploadTargetAndFormFields() async throws {
         let httpClient = MockHTTPClient()
         httpClient.responseData = """