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CHANGELOG.md

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Changelog

All notable changes to Assistant Agent will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Initial open source release preparation
  • Comprehensive documentation

[0.1.3] - 2026-02-04

Added

Observation & Traceability

  • OpenTelemetry Observability Support: Full OpenTelemetry native API integration
    • BaseAgentObservationLifecycleListener: Base lifecycle listener for Agent observability
    • CodeactObservationDocumentation: Standardized observation metrics definition (Hook, Interceptor, React, Execution, CodeGen, ToolCall)
    • EvaluationObservationLifecycleListener: Observability listener for Evaluation Graph
  • Tool Call Tracing: New tool call recording and tracing capabilities
    • ToolCallRecord: Tool call record model with call order and tool name
    • ExecutionRecord.callTrace: Tool call trace list during code execution
    • ToolRegistryBridge: Tool registry bridge
  • Observation Helper Classes:
    • HookObservationHelper: Hook execution observation helper
    • InterceptorObservationHelper: Interceptor execution observation helper
    • OpenTelemetryObservationHelper: General OpenTelemetry observation helper
  • Observation Contexts:
    • HookObservationContext: Hook observation context
    • InterceptorObservationContext: Interceptor observation context
    • ReactPhaseObservationContext: React phase observation context
    • CodeGenerationObservationContext: Code generation observation context
    • CodeactExecutionObservationContext: Code execution observation context
    • CodeactToolCallObservationContext: Tool call observation context

Prompt Contributor Module

  • PromptContributor Mechanism Refactoring: Replaced PromptBuilder/PromptManager with a more flexible Prompt contribution system
    • PromptContributor: Prompt contributor interface
    • PromptContributorManager: Prompt contributor manager interface
    • DefaultPromptContributorManager: Default implementation with priority sorting and dynamic registration
    • PromptContributorContext: Context interface
    • OverAllStatePromptContributorContext: OverAllState-based context implementation
  • Evaluation-based Prompt Contribution:
    • EvaluationBasedPromptContributor: Abstract base class for generating Prompts based on evaluation results
    • PromptContributorModelHook: Abstract base class for integrating PromptContributor into ModelHook
    • ReactPromptContributorModelHook: Prompt contribution Hook for React phase
    • CodeactPromptContributorModelHook: Prompt contribution Hook for Codeact phase
  • Auto Configuration: PromptContributorAutoConfiguration provides out-of-the-box configuration

Other Enhancements

  • ParameterTree: Enhanced parameter tree definition capabilities
  • CommonSenseInjectionTool: Common sense injection tool
  • ToolContextHelper: Tool context helper class
  • CodeactStateKeys: Codeact state key constants

Changed

  • GraalCodeExecutor: Enhanced code executor with tool call tracing support
  • PythonToolViewRenderer: Enhanced Python tool view rendering capabilities
  • EvaluationService: Support for parent Span for distributed tracing
  • EvaluationSuiteBuilder: Enhanced evaluation suite building capabilities
  • ReplyCodeactToolFactory: Optimized reply tool factory implementation
  • AfterAgentLearningHook: Enhanced learning Hook implementation
  • AsyncLearningHandler: Optimized async learning handler
  • CodeactAgent: Refactored to support new observation and Prompt contribution mechanism

Removed

  • PromptBuilder: Replaced by PromptContributor
  • PromptManager: Replaced by PromptContributorManager
  • PromptInjectionInterceptor: Replaced by PromptContributorModelHook
  • CodeactToolFilter: Tool filter
  • WhitelistMode: Whitelist mode enum

[0.1.2] - 2026-01-XX

Added

  • Baidu Qianfan intelligent search API integration
  • HookPhases annotation support
  • McpServerAwareToolCallback interface for enhanced MCP dynamic tool creation

Fixed

  • Fixed context binding path in evaluation criteria
  • Fixed null pointer exception in UnifiedSearchCodeactTool

[0.1.0] - Initial Release

Added

Core Features

  • Code-as-Action Execution Engine: Agent generates and executes Python code via GraalVM sandbox
  • Secure Sandbox: AI-generated code runs safely with resource isolation in GraalVM polyglot environment
  • CodeactTool System: Unified tool interface supporting multiple tool types

Evaluation Module

  • Multi-dimensional intent recognition through Evaluation Graph
  • LLM-based and Rule-based evaluation engines
  • Customizable evaluation criteria with dependency management
  • Multiple result types: BOOLEAN, ENUM, SCORE, JSON, TEXT

Prompt Builder Module

  • Dynamic prompt assembly based on evaluation results
  • Priority-based PromptBuilder orchestration
  • Support for system text prepend/append
  • Non-invasive model interceptor integration

Experience Module

  • Multi-type experience management (Code, ReAct, Common)
  • In-memory experience storage with configurable TTL
  • Experience retrieval and injection into prompts
  • FastIntent quick response mechanism for familiar scenarios

Learning Module

  • After-Agent learning: Extract experiences after agent execution
  • After-Model learning: Extract experiences after model calls
  • Tool Interceptor learning: Learn from tool executions
  • Async learning execution support

Search Module

  • Unified SearchProvider SPI for multiple data sources
  • Support for Knowledge, Project, and Web search types
  • Configurable result merging strategies
  • Mock implementations for demonstration

Reply Module

  • Multi-channel reply routing
  • Configuration-driven reply tool generation
  • ReplyChannelDefinition SPI for custom channels
  • Built-in IDE text channel for demonstration

Trigger Module

  • Cron-based scheduled triggers (TIME_CRON)
  • One-time delayed triggers (TIME_ONCE)
  • Callback event triggers (CALLBACK)
  • Persistent trigger repository

Dynamic Tools Module

  • MCP (Model Context Protocol) tool integration
  • HTTP API tool integration via OpenAPI spec
  • Dynamic tool registration and discovery

Auto Configuration

  • Spring Boot auto-configuration support
  • Sensible defaults for all modules
  • Comprehensive configuration properties

Configuration

  • Full YAML configuration support
  • Environment variable support for sensitive values
  • Module-level enable/disable switches

Documentation

  • Chinese and English README
  • Contributing guidelines
  • Roadmap documentation
  • Configuration reference

Version History Summary

Version Date Description
0.1.3 2026-02-04 Enhanced tool call tracing and observability, refactored Prompt Contributor module, bug fixes
0.1.2 2026-01-XX Baidu Qianfan search integration, HookPhases annotation, bug fixes
0.1.0 TBD Initial open source release

Migration Notes

From Internal Versions

If you're migrating from internal versions of this project:

  1. Review configuration property names - some may have changed
  2. Implement required SPI interfaces (SearchProvider, etc.) for production use

Deprecation Notices

None at this time.