v1.29.0

Changelog

1.29.0 (2026-04-09)

Features

• Add auth scheme/credential support to MCP toolsets in Agent Registry (7913a3b)
• add ability to block shell metacharacters in BashTool (23bd95b)
• add configurable resource limits for subprocesses in BashTool (1b05842)
• Add configurable view_prefix to BigQueryLoggerConfig (37973da)
• Add custom session id functionality to vertex ai session service (e1913a6)
• Add Description column to SKILL.md and update terminology (435f7c7)
• Add Easy GCP support to ADK CLI (8850916)
• Add regional endpoint support to SecretManagerClient (19ac679)
• Add support for model endpoints in Agent Registry (eb4674b)
• auth: Add public api to register custom auth provider with credential manager (a220910)
• auth: Pass consent_nonce to Agent Frontend (9fec503)
• auth: Support additional HTTP headers in MCP tools (b3e9962)
• bigquery: Add ADK 1P Skills for ADK BQ Toolset (4030c0d)
• environment: Add EnvironmentToolset for file I/O and command execution (9082b9e)
• environment: Add LocalEnvironment for executing commands and file I/O locally (f973673)
• Implement robust process group management and timeouts in BashTool (f641b1a)
• live: Added in 1.28.1, support live for gemini-3.1-flash-live-preview model (8082893)
• Option to use shallow-copy for session in InMemorySessionService (16a1a18)
• Propagate context to thread pools (83393ab)
• refresh credentials if token is missing in the common code and samples (1445ad5)
• Remove use of raw_event field in vertex ai session service (642d337)
• skill: Standardize skill tools and make script arguments flexible (9e73ab8)
• Support AgentRegistry association (6754760)
• Support loading agents from Visual Builder with BigQuery-powered logging (2074889)
• Support propagating grounding metadata from AgentTool (d689a04)
• Support short options and positional arguments in RunSkillScriptTool (2b49163)
• Use raw_event field in vertex ai session service for append and list events (6ee0362)
• Use raw_event to store event data in vertex ai session service (9da9dee)

Bug Fixes

• Add A2ATransport.http_json to the default supported transports list (7dd9359)
• add httpx_client_factory support to SseConnectionParams (815ebb4)
• adk: redact credentials in BigQuery analytics plugin (a27ce47)
• api client initialization logic to be mutually exclusive between ExpressMode and GCP projects (4ffe8fb)
• avoid load all agents in adk web server (ede8a56)
• Cache BaseToolset.get_tools() for calls within the same invocation (92cad99)
• cli: fail Agent Engine deploy when config file path is invalid (bbad9ec)
• Disable tool caching for skill toolset (064f0d2)
• Disallow args on /builder and Add warning about Web UI usage to CLI help (dcee290)
• empty events_iterator assignment (898c4e5)
• environment: fix package references (add8e86)
• Fix RemoteA2AAgent deepcopy errors (6f29775)
• Fixes for initializing RemoteA2aAgent - passing in preferred transport, protocol version, and auth headers (0f3850f)
• Generate IDs for FunctionCalls when processing streaming LLM responses (fe41817), closes #4609
• Handle merging lists in deep_merge_dicts (cdb3ff4)
• In memory session service to evaluate dictionary keys and value into an isolated snapshot sequence before starting loop (f75de59)
• include intermediate subagent final response events in evaluation intermediate data (f8a6bd7)
• live: Handle live session resumption and GoAway signal (6b1600f), closes #4996
• move BigQueryAgentAnalyticsPlugin import inside get_runner_async (6fd0f85)
• Safer fix for UI widget merging in ADK (0e71985)
• Small fixes for express mode (3a374ce)
• sync callbacks with call_llm span (b2daf83)
• tools: handle toolset errors gracefully in canonical_tools (5df03f1), closes #3341
• truncate error_message in v0 schema to prevent VARCHAR overflow (62daf4f), closes #4993
• update toolbox-adk and toolbox server versions (1486925)

Code Refactoring

• Move SecretManagerClient to google.adk.integrations.secret_manager package (1104523)
• Remove the session events dependency from A2aAgentExecutor (aaa03ac)

Documentation

• adk: clean up remote triggers README to remove internal references (ccac461)
• Update the MCP Toolbox docsite with the new URL (a60baca)