feat: bump protocol to 0.6.3

Signed-off-by: Chojan Shang <chojan.shang@vesoft.com>

Author: Chojan Shang

schema/VERSION

@@ -1 +1 @@
-refs/tags/v0.6.2
+refs/tags/v0.6.3

schema/schema.json

@@ -708,9 +708,12 @@
     },
     "ContentBlock": {
       "description": "Content blocks represent displayable information in the Agent Client Protocol.\n\nThey provide a structured way to handle various types of user-facing content\u2014whether\nit's text from language models, images for analysis, or embedded resources for context.\n\nContent blocks appear in:\n- User prompts sent via `session/prompt`\n- Language model output streamed through `session/update` notifications\n- Progress updates and results from tool calls\n\nThis structure is compatible with the Model Context Protocol (MCP), enabling\nagents to seamlessly forward content from MCP tool outputs without transformation.\n\nSee protocol docs: [Content](https://agentclientprotocol.com/protocol/content)",
+      "discriminator": {
+        "propertyName": "type"
+      },
       "oneOf": [
         {
-          "description": "Plain text content\n\nAll agents MUST support text content blocks in prompts.",
+          "description": "Text content. May be plain text or formatted with Markdown.\n\nAll agents MUST support text content blocks in prompts.\nClients SHOULD render this text as Markdown.",
           "properties": {
             "_meta": {
               "description": "Extension point for implementations"
@@ -1406,7 +1409,10 @@
           "type": "object"
         }
       ],
-      "description": "Configuration for connecting to an MCP (Model Context Protocol) server.\n\nMCP servers provide tools and context that the agent can use when\nprocessing prompts.\n\nSee protocol docs: [MCP Servers](https://agentclientprotocol.com/protocol/session-setup#mcp-servers)"
+      "description": "Configuration for connecting to an MCP (Model Context Protocol) server.\n\nMCP servers provide tools and context that the agent can use when\nprocessing prompts.\n\nSee protocol docs: [MCP Servers](https://agentclientprotocol.com/protocol/session-setup#mcp-servers)",
+      "discriminator": {
+        "propertyName": "type"
+      }
     },
     "ModelId": {
       "description": "**UNSTABLE**\n\nThis capability is not part of the spec yet, and may be removed or changed at any point.\n\nA unique identifier for a model.",
@@ -1796,6 +1802,9 @@
     },
     "RequestPermissionOutcome": {
       "description": "The outcome of a permission request.",
+      "discriminator": {
+        "propertyName": "outcome"
+      },
       "oneOf": [
         {
           "description": "The prompt turn was cancelled before the user responded.\n\nWhen a client sends a `session/cancel` notification to cancel an ongoing\nprompt turn, it MUST respond to all pending `session/request_permission`\nrequests with this `Cancelled` outcome.\n\nSee protocol docs: [Cancellation](https://agentclientprotocol.com/protocol/prompt-turn#cancellation)",
@@ -2060,6 +2069,9 @@
     },
     "SessionUpdate": {
       "description": "Different types of updates that can be sent during session processing.\n\nThese updates provide real-time feedback about the agent's progress.\n\nSee protocol docs: [Agent Reports Output](https://agentclientprotocol.com/protocol/prompt-turn#3-agent-reports-output)",
+      "discriminator": {
+        "propertyName": "sessionUpdate"
+      },
       "oneOf": [
         {
           "description": "A chunk of the user's message being streamed.",
@@ -2530,6 +2542,9 @@
     },
     "ToolCallContent": {
       "description": "Content produced by a tool call.\n\nTool calls can produce different types of content including\nstandard content blocks (text, images) or file diffs.\n\nSee protocol docs: [Content](https://agentclientprotocol.com/protocol/tool-calls#content)",
+      "discriminator": {
+        "propertyName": "type"
+      },
       "oneOf": [
         {
           "description": "Standard content block (text, images, resources).",

src/acp/meta.py

@@ -1,5 +1,5 @@
 # Generated from schema/meta.json. Do not edit by hand.
-# Schema ref: refs/tags/v0.6.2
+# Schema ref: refs/tags/v0.6.3
 AGENT_METHODS = {'authenticate': 'authenticate', 'initialize': 'initialize', 'session_cancel': 'session/cancel', 'session_load': 'session/load', 'session_new': 'session/new', 'session_prompt': 'session/prompt', 'session_set_mode': 'session/set_mode', 'session_set_model': 'session/set_model'}
 CLIENT_METHODS = {'fs_read_text_file': 'fs/read_text_file', 'fs_write_text_file': 'fs/write_text_file', 'session_request_permission': 'session/request_permission', 'session_update': 'session/update', 'terminal_create': 'terminal/create', 'terminal_kill': 'terminal/kill', 'terminal_output': 'terminal/output', 'terminal_release': 'terminal/release', 'terminal_wait_for_exit': 'terminal/wait_for_exit'}
 PROTOCOL_VERSION = 1

src/acp/schema.py

@@ -1,5 +1,5 @@
 # Generated from schema/schema.json. Do not edit by hand.
-# Schema ref: refs/tags/v0.6.2
+# Schema ref: refs/tags/v0.6.3
 
 from __future__ import annotations
 
@@ -244,6 +244,7 @@ class StdioMcpServer(BaseModel):
     ]
     # Human-readable name identifying this MCP server.
     name: Annotated[str, Field(description="Human-readable name identifying this MCP server.")]
+    type: Literal["2#-datamodel-code-generator-#-object-#-special-#"]
 
 
 class ModelInfo(BaseModel):
@@ -336,7 +337,10 @@ class RequestPermissionResponse(BaseModel):
     # The user's decision on the permission request.
     outcome: Annotated[
         Union[DeniedOutcome, AllowedOutcome],
-        Field(description="The user's decision on the permission request."),
+        Field(
+            description="The user's decision on the permission request.",
+            discriminator="outcome",
+        ),
     ]
 
 
@@ -1195,7 +1199,7 @@ class UserMessageChunk(BaseModel):
         Union[
             TextContentBlock, ImageContentBlock, AudioContentBlock, ResourceContentBlock, EmbeddedResourceContentBlock
         ],
-        Field(description="A single item of content"),
+        Field(description="A single item of content", discriminator="type"),
     ]
     sessionUpdate: Literal["user_message_chunk"]
 
@@ -1211,7 +1215,7 @@ class AgentMessageChunk(BaseModel):
         Union[
             TextContentBlock, ImageContentBlock, AudioContentBlock, ResourceContentBlock, EmbeddedResourceContentBlock
         ],
-        Field(description="A single item of content"),
+        Field(description="A single item of content", discriminator="type"),
     ]
     sessionUpdate: Literal["agent_message_chunk"]
 
@@ -1227,7 +1231,7 @@ class AgentThoughtChunk(BaseModel):
         Union[
             TextContentBlock, ImageContentBlock, AudioContentBlock, ResourceContentBlock, EmbeddedResourceContentBlock
         ],
-        Field(description="A single item of content"),
+        Field(description="A single item of content", discriminator="type"),
     ]
     sessionUpdate: Literal["agent_thought_chunk"]
 
@@ -1238,7 +1242,7 @@ class ContentToolCallContent(BaseModel):
         Union[
             TextContentBlock, ImageContentBlock, AudioContentBlock, ResourceContentBlock, EmbeddedResourceContentBlock
         ],
-        Field(description="The actual content block."),
+        Field(description="The actual content block.", discriminator="type"),
     ]
     type: Literal["content"]
 
@@ -1457,7 +1461,7 @@ class SessionNotification(BaseModel):
             AvailableCommandsUpdate,
             CurrentModeUpdate,
         ],
-        Field(description="The actual update content."),
+        Field(description="The actual update content.", discriminator="sessionUpdate"),
     ]