release: AHP 1.0.0

CHANGELOG.md

@@ -23,13 +23,37 @@ changes accumulate. Track in-flight protocol changes via PRs touching
 `NOTIFICATION_INTRODUCED_IN` maps in
 [`types/version/registry.ts`](types/version/registry.ts).
 
-## [0.10.0] — Unreleased
+## [1.1.0] — Unreleased
 
-Spec version: `0.10.0`
+Spec version: `1.1.0`
+
+## [1.0.0] — 2026-10-02
+
+Spec version: `1.0.0`
 
 ### Added
 
-- Chat-owned canvas references and experimental per-canvas channels for live presentation state and source URLs.
+- `AuthenticateParams.expiresIn` carries an OAuth access token's remaining lifetime in seconds.
+- `SessionSummary.chats`, `SessionChatSummary.interactivity`, and `SessionSummary.defaultChat` expose lightweight chat navigation data without requiring a session subscription.
+- `chat/isArchivedChanged` action for archiving a chat independently of its session.
+- `ChatState.changesets` and `chat/changesetsChanged` expose each chat's changeset catalogue through the subscribed chat channel.
+- `AutomationDefinition.disableConditions` supports `afterRuns` (`max`) and `afterDate` (`date`) rules combined with logical OR, with at most one condition per kind. Host-owned `AutomationEntry.runCount` tracks the current scheduled-run allowance. Edit conditions through `automation/updateRequested`: omission leaves them unchanged, an array replaces them, and `[]` removes all conditions without re-enabling the automation.
+- `ChangesetStatus.Recomputing` distinguishes refreshes of a completed result from initial changeset computation.
+- `ConfigPropertySchema.minItems` and `ConfigPropertySchema.maxItems` express array cardinality for `type: "array"` config properties. (#432)
+- `McpServerStartingState.blocking` flag indicating that message processing may be held on the server, and the client-dispatchable `session/mcpServerBackgroundRequested` action asking the host to background such a startup.
+- `AutomationSessionTemplate.customizations` lets automations carry client plugins (skills, agents, prompts, rules) that the host captures when the definition is saved, with the host-owned copies reported in `AutomationEntry.customizations` and support advertised by `AutomationCapabilities.customizations`.
+- Hosts can advertise chat-owned canvas channel references and synchronize live presentation metadata and source URLs on experimental per-canvas channels.
+- Atomic stable-URI `moveChat` transfer and same-session ordering for host-authorized chats, with per-chat `movable` discovery and durable authoritative catalogs.
+- Expose chat-owned background work (background shells and subagents) in chat state, with `chat/backgroundWorkSet` and `chat/backgroundWorkRemoved` actions independent of turn lifetime.
+- `ChatSummary.changes` and `ChatState.changes` provide aggregate file-change counts without requiring a changeset subscription.
+- `SessionChatSummary.status` exposes per-chat archived state via `SessionStatus.IsArchived` in the lightweight chat catalog without requiring a session subscription.
+- `chat/isReadChanged` action and optional `SessionChatSummary.status` projection for independently tracking the status of any known chat, including the default chat; the status bitset replaces the unreleased `isRead` and `archived` catalog fields.
+- `SessionChatSummary.changes` exposes per-chat change counts in the lightweight chat catalog without requiring a session subscription.
+
+### Changed
+
+- Historical `ToolResultTerminalContent.resource` subscriptions return lazily reconstructed exited terminal state with retained output.
+- `FileEdit` and preview `edits` now use named models in generated SDKs. This breaks affected SDK APIs but keeps JSON shapes unchanged.
 
 ## [0.9.0] — 2026-08-28
 

clients/dotnet/VERSION

@@ -1 +1 @@
-0.9.0
+1.0.0

clients/dotnet/release-metadata.json

@@ -1,7 +1,9 @@
 {
   "client": "dotnet",
-  "packageVersion": "0.9.0",
+  "packageVersion": "1.0.0",
   "supportedProtocolVersions": [
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",

clients/dotnet/src/AgentHostProtocol.Abstractions/Generated/Version.generated.cs

@@ -14,10 +14,12 @@ public static class ProtocolVersion
     /// The current protocol version (SemVer MAJOR.MINOR.PATCH) this
     /// generated source speaks.
     /// </summary>
-    public const string Current = "0.10.0";
+    public const string Current = "1.1.0";
 
     private static readonly string[] s_supported =
     {
+        "1.1.0",
+        "1.0.0",
         "0.10.0",
         "0.9.0",
         "0.8.0",

clients/go/CHANGELOG.md

@@ -14,6 +14,34 @@ tag whose matching `## [X.Y.Z]` heading is missing from this file.
 
 ## [Unreleased]
 
+## [1.0.0] — 2026-10-02
+
+Implements AHP 1.0.0.
+
+### Added
+
+- `AuthenticateParams.expiresIn` carries an OAuth access token's remaining lifetime in seconds.
+- `SessionSummary.chats`, `SessionChatSummary.interactivity`, and `SessionSummary.defaultChat` expose lightweight chat navigation data without requiring a session subscription.
+- `chat/isArchivedChanged` action for archiving a chat independently of its session.
+- `ChatState.changesets` and `chat/changesetsChanged` expose each chat's changeset catalogue through the subscribed chat channel.
+- `AutomationDefinition.disableConditions` supports `afterRuns` (`max`) and `afterDate` (`date`) rules combined with logical OR, with at most one condition per kind. Host-owned `AutomationEntry.runCount` tracks the current scheduled-run allowance. Edit conditions through `automation/updateRequested`: omission leaves them unchanged, an array replaces them, and `[]` removes all conditions without re-enabling the automation.
+- `ChangesetStatus.Recomputing` distinguishes refreshes of a completed result from initial changeset computation.
+- `ConfigPropertySchema.minItems` and `ConfigPropertySchema.maxItems` express array cardinality for `type: "array"` config properties. (#432)
+- `McpServerStartingState.blocking` flag indicating that message processing may be held on the server, and the client-dispatchable `session/mcpServerBackgroundRequested` action asking the host to background such a startup.
+- `AutomationSessionTemplate.customizations` lets automations carry client plugins (skills, agents, prompts, rules) that the host captures when the definition is saved, with the host-owned copies reported in `AutomationEntry.customizations` and support advertised by `AutomationCapabilities.customizations`.
+- Hosts can advertise chat-owned canvas channel references and synchronize live presentation metadata and source URLs on experimental per-canvas channels.
+- Atomic stable-URI `moveChat` transfer and same-session ordering for host-authorized chats, with per-chat `movable` discovery and durable authoritative catalogs.
+- Expose chat-owned background work (background shells and subagents) in chat state, with `chat/backgroundWorkSet` and `chat/backgroundWorkRemoved` actions independent of turn lifetime.
+- `ChatSummary.changes` and `ChatState.changes` provide aggregate file-change counts without requiring a changeset subscription.
+- `SessionChatSummary.status` exposes per-chat archived state via `SessionStatus.IsArchived` in the lightweight chat catalog without requiring a session subscription.
+- `chat/isReadChanged` action and optional `SessionChatSummary.status` projection for independently tracking the status of any known chat, including the default chat; the status bitset replaces the unreleased `isRead` and `archived` catalog fields.
+- `SessionChatSummary.changes` exposes per-chat change counts in the lightweight chat catalog without requiring a session subscription.
+
+### Changed
+
+- Historical `ToolResultTerminalContent.resource` subscriptions return lazily reconstructed exited terminal state with retained output.
+- `FileEdit` and preview `edits` now use named models in generated SDKs. This breaks affected SDK APIs but keeps JSON shapes unchanged.
+
 ## [0.9.0] — 2026-08-28
 
 Implements AHP 0.9.0.

clients/go/VERSION

@@ -1 +1 @@
-0.9.0
+1.0.0

clients/go/ahptypes/version.generated.go

@@ -6,12 +6,14 @@ package ahptypes
 
 // ProtocolVersion is the current protocol version (SemVer
 // MAJOR.MINOR.PATCH) that this generated source speaks.
-const ProtocolVersion = "0.10.0"
+const ProtocolVersion = "1.1.0"
 
 // supportedProtocolVersions backs [SupportedProtocolVersions] — held
 // in an unexported slice so callers cannot accidentally mutate the
 // shared backing array.
 var supportedProtocolVersions = []string{
+	"1.1.0",
+	"1.0.0",
 	"0.10.0",
 	"0.9.0",
 	"0.8.0",

clients/go/release-metadata.json

@@ -1,7 +1,9 @@
 {
   "client": "go",
-  "packageVersion": "0.9.0",
+  "packageVersion": "1.0.0",
   "supportedProtocolVersions": [
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",

clients/kotlin/CHANGELOG.md

@@ -15,6 +15,34 @@ versions (`*-SNAPSHOT`) are explicitly rejected by the publish pipeline; bump
 
 ## [Unreleased]
 
+## [1.0.0] — 2026-10-02
+
+Implements AHP 1.0.0.
+
+### Added
+
+- `AuthenticateParams.expiresIn` carries an OAuth access token's remaining lifetime in seconds.
+- `SessionSummary.chats`, `SessionChatSummary.interactivity`, and `SessionSummary.defaultChat` expose lightweight chat navigation data without requiring a session subscription.
+- `chat/isArchivedChanged` action for archiving a chat independently of its session.
+- `ChatState.changesets` and `chat/changesetsChanged` expose each chat's changeset catalogue through the subscribed chat channel.
+- `AutomationDefinition.disableConditions` supports `afterRuns` (`max`) and `afterDate` (`date`) rules combined with logical OR, with at most one condition per kind. Host-owned `AutomationEntry.runCount` tracks the current scheduled-run allowance. Edit conditions through `automation/updateRequested`: omission leaves them unchanged, an array replaces them, and `[]` removes all conditions without re-enabling the automation.
+- `ChangesetStatus.Recomputing` distinguishes refreshes of a completed result from initial changeset computation.
+- `ConfigPropertySchema.minItems` and `ConfigPropertySchema.maxItems` express array cardinality for `type: "array"` config properties. (#432)
+- `McpServerStartingState.blocking` flag indicating that message processing may be held on the server, and the client-dispatchable `session/mcpServerBackgroundRequested` action asking the host to background such a startup.
+- `AutomationSessionTemplate.customizations` lets automations carry client plugins (skills, agents, prompts, rules) that the host captures when the definition is saved, with the host-owned copies reported in `AutomationEntry.customizations` and support advertised by `AutomationCapabilities.customizations`.
+- Hosts can advertise chat-owned canvas channel references and synchronize live presentation metadata and source URLs on experimental per-canvas channels.
+- Atomic stable-URI `moveChat` transfer and same-session ordering for host-authorized chats, with per-chat `movable` discovery and durable authoritative catalogs.
+- Expose chat-owned background work (background shells and subagents) in chat state, with `chat/backgroundWorkSet` and `chat/backgroundWorkRemoved` actions independent of turn lifetime.
+- `ChatSummary.changes` and `ChatState.changes` provide aggregate file-change counts without requiring a changeset subscription.
+- `SessionChatSummary.status` exposes per-chat archived state via `SessionStatus.IsArchived` in the lightweight chat catalog without requiring a session subscription.
+- `chat/isReadChanged` action and optional `SessionChatSummary.status` projection for independently tracking the status of any known chat, including the default chat; the status bitset replaces the unreleased `isRead` and `archived` catalog fields.
+- `SessionChatSummary.changes` exposes per-chat change counts in the lightweight chat catalog without requiring a session subscription.
+
+### Changed
+
+- Historical `ToolResultTerminalContent.resource` subscriptions return lazily reconstructed exited terminal state with retained output.
+- `FileEdit` and preview `edits` now use named models in generated SDKs. This breaks affected SDK APIs but keeps JSON shapes unchanged.
+
 ## [0.9.0] — 2026-08-28
 
 Implements AHP 0.9.0.

clients/kotlin/gradle.properties

@@ -8,7 +8,7 @@ kotlin.code.style=official
 # Maven coordinates — consumed by build.gradle.kts and validated by the
 # publish workflow against the `kotlin/v*` git tag.
 GROUP=com.microsoft.agenthostprotocol
-VERSION_NAME=0.9.0
+VERSION_NAME=1.0.0
 POM_NAME=agent-host-protocol
 POM_DESCRIPTION=Kotlin/JVM client for the Agent Host Protocol (AHP)
 POM_INCEPTION_YEAR=2026

clients/kotlin/release-metadata.json

@@ -1,7 +1,9 @@
 {
   "client": "kotlin",
-  "packageVersion": "0.9.0",
+  "packageVersion": "1.0.0",
   "supportedProtocolVersions": [
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",

clients/kotlin/src/main/kotlin/com/microsoft/agenthostprotocol/generated/Version.generated.kt

@@ -5,7 +5,7 @@ package com.microsoft.agenthostprotocol.generated
 /**
  * Current protocol version (SemVer `MAJOR.MINOR.PATCH`).
  */
-public const val PROTOCOL_VERSION: String = "0.10.0"
+public const val PROTOCOL_VERSION: String = "1.1.0"
 
 /**
  * Every protocol version this library is willing to negotiate, ordered
@@ -16,6 +16,8 @@ public const val PROTOCOL_VERSION: String = "0.10.0"
  * protocol versions if the host doesn't accept the newest one.
  */
 public val SUPPORTED_PROTOCOL_VERSIONS: List<String> = listOf(
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",

clients/rust/CHANGELOG.md

@@ -15,6 +15,38 @@ matching `## [X.Y.Z]` heading is missing from this file.
 
 ## [Unreleased]
 
+## [1.0.0] — 2026-10-02
+
+Implements AHP 1.0.0.
+
+### Added
+
+- `AuthenticateParams.expiresIn` carries an OAuth access token's remaining lifetime in seconds.
+- `SessionSummary.chats`, `SessionChatSummary.interactivity`, and `SessionSummary.defaultChat` expose lightweight chat navigation data without requiring a session subscription.
+- `chat/isArchivedChanged` action for archiving a chat independently of its session.
+- `ChatState.changesets` and `chat/changesetsChanged` expose each chat's changeset catalogue through the subscribed chat channel.
+- `AutomationDefinition.disableConditions` supports `afterRuns` (`max`) and `afterDate` (`date`) rules combined with logical OR, with at most one condition per kind. Host-owned `AutomationEntry.runCount` tracks the current scheduled-run allowance. Edit conditions through `automation/updateRequested`: omission leaves them unchanged, an array replaces them, and `[]` removes all conditions without re-enabling the automation.
+- `ChangesetStatus.Recomputing` distinguishes refreshes of a completed result from initial changeset computation.
+- `ConfigPropertySchema.minItems` and `ConfigPropertySchema.maxItems` express array cardinality for `type: "array"` config properties. (#432)
+- `McpServerStartingState.blocking` flag indicating that message processing may be held on the server, and the client-dispatchable `session/mcpServerBackgroundRequested` action asking the host to background such a startup.
+- `AutomationSessionTemplate.customizations` lets automations carry client plugins (skills, agents, prompts, rules) that the host captures when the definition is saved, with the host-owned copies reported in `AutomationEntry.customizations` and support advertised by `AutomationCapabilities.customizations`.
+- Hosts can advertise chat-owned canvas channel references and synchronize live presentation metadata and source URLs on experimental per-canvas channels.
+- Atomic stable-URI `moveChat` transfer and same-session ordering for host-authorized chats, with per-chat `movable` discovery and durable authoritative catalogs.
+- Expose chat-owned background work (background shells and subagents) in chat state, with `chat/backgroundWorkSet` and `chat/backgroundWorkRemoved` actions independent of turn lifetime.
+- `ChatSummary.changes` and `ChatState.changes` provide aggregate file-change counts without requiring a changeset subscription.
+- `SessionChatSummary.status` exposes per-chat archived state via `SessionStatus.IsArchived` in the lightweight chat catalog without requiring a session subscription.
+- `chat/isReadChanged` action and optional `SessionChatSummary.status` projection for independently tracking the status of any known chat, including the default chat; the status bitset replaces the unreleased `isRead` and `archived` catalog fields.
+- `SessionChatSummary.changes` exposes per-chat change counts in the lightweight chat catalog without requiring a session subscription.
+
+### Changed
+
+- Historical `ToolResultTerminalContent.resource` subscriptions return lazily reconstructed exited terminal state with retained output.
+- `FileEdit` and preview `edits` now use named models in generated SDKs. This breaks affected SDK APIs but keeps JSON shapes unchanged.
+
+### Fixed
+
+- `ClientPluginCustomization` now serializes its `"type": "plugin"` discriminant, so plugins published in `SessionActiveClient.customizations` are no longer sent without `type`.
+
 ## [0.9.0] — 2026-08-28
 
 Implements AHP 0.9.0.

clients/rust/Cargo.toml

@@ -7,7 +7,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.9.0"
+version = "1.0.0"
 edition = "2021"
 rust-version = "1.75"
 license = "MIT"
@@ -27,5 +27,5 @@ tokio-util = "0.7"
 futures-util = "0.3"
 tracing = "0.1"
 jiff = { version = "0.2", default-features = false, features = ["std"] }
-ahp-types = { path = "crates/ahp-types", version = "0.9.0" }
-ahp = { path = "crates/ahp", version = "0.9.0" }
+ahp-types = { path = "crates/ahp-types", version = "1.0.0" }
+ahp = { path = "crates/ahp", version = "1.0.0" }

clients/rust/crates/ahp-types/src/version.rs

@@ -5,7 +5,7 @@
 #![allow(missing_docs)]
 
 /// Current protocol version (SemVer `MAJOR.MINOR.PATCH`).
-pub const PROTOCOL_VERSION: &str = "0.10.0";
+pub const PROTOCOL_VERSION: &str = "1.1.0";
 
 /// Every protocol version this crate is willing to negotiate, ordered
 /// most-preferred-first. The first entry equals [`PROTOCOL_VERSION`].
@@ -14,5 +14,5 @@ pub const PROTOCOL_VERSION: &str = "0.10.0";
 /// derived `Vec<String>`) so the same client binary can fall back to
 /// older protocol versions if the host doesn't accept the newest one.
 pub const SUPPORTED_PROTOCOL_VERSIONS: &[&str] = &[
-    "0.10.0", "0.9.0", "0.8.0", "0.7.0", "0.6.0", "0.5.2", "0.5.1",
+    "1.1.0", "1.0.0", "0.10.0", "0.9.0", "0.8.0", "0.7.0", "0.6.0", "0.5.2", "0.5.1",
 ];

clients/rust/release-metadata.json

@@ -1,7 +1,9 @@
 {
   "client": "rust",
-  "packageVersion": "0.9.0",
+  "packageVersion": "1.0.0",
   "supportedProtocolVersions": [
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",

clients/swift/AgentHostProtocol/Sources/AgentHostProtocol/Generated/Version.generated.swift

@@ -3,7 +3,7 @@
 import Foundation
 
 /// Current protocol version (SemVer `MAJOR.MINOR.PATCH`).
-public let PROTOCOL_VERSION: String = "0.10.0"
+public let PROTOCOL_VERSION: String = "1.1.0"
 
 /// Every protocol version this package is willing to negotiate,
 /// ordered most-preferred-first. The first entry equals
@@ -13,6 +13,8 @@ public let PROTOCOL_VERSION: String = "0.10.0"
 /// `InitializeParams` so the same client binary can fall back to older
 /// protocol versions if the host doesn't accept the newest one.
 public let SUPPORTED_PROTOCOL_VERSIONS: [String] = [
+    "1.1.0",
+    "1.0.0",
     "0.10.0",
     "0.9.0",
     "0.8.0",