fix(deps): update dependency ai.koog:koog-agents to v0.8.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ai.koog:koog-agents	0.6.2 → 0.8.0

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Release Notes

JetBrains/koog (ai.koog:koog-agents)

v0.8.0

Compare Source

Published 10 April 2026

Major Features

• Spring AI Integration: Added comprehensive Spring AI support with ChatMemoryRepository and VectorStore integration for seamless persistence and retrieval (#​1719, #​1763)
• Amazon Bedrock AgentCore Memory: Introduced ChatHistoryProvider backed by Amazon Bedrock AgentCore Memory for managed conversation state (#​1758)
• DataDog LLM Observability: Added DataDog LLM Observability exporter with response metadata forwarding to inference spans (#​1591)

Improvements

• Native structured output for Claude 4.5+: Added JSON Schema support for Claude 4.5+ series models across Anthropic, Bedrock, and Vertex AI providers (#​1593)
• Mermaid diagram support for nested subgraphs: Enhanced Mermaid diagram generator to visualize subgraphs and nested subgraphs (#​1745)
• RAG-based abstractions:LongTermMemory feature now uses cleaner abstractions from rag-base for better modularity (#​1785)
• LLMClient constructor decoupling: Decoupled LLMClient constructors from Ktor for improved flexibility (#​1742)
• Customizable field names: Added support for customized field names in AdditionalPropertiesFlatteningSerializer (#​1626)
• GPT-5.4 models: Added support for GPT-5.4Mini and GPT-5.4Nano models (#​1837)
• Google models update: Updated Google models capabilities and deprecated older model versions (#​1827)
• Environment creation abstraction: Extracted environment creation into prepareEnvironment method in agent implementations for better extensibility (#​1790)
• Reasoning prompt refactoring: Moved reasoning prompt configuration to strategy parameters for better encapsulation (#​1789)
• JSON schema capabilities: Added JSON schema capabilities to OpenAI models (#​1822)
• Add missing JavaAPI for history compression inside write session: Added replaceHistoryWithTLDR as non-suspend method of AIAgentWriteSession (#​1839)

Bug Fixes

• Agent message handling: Corrected description of Koog agent message handling (#​1010)
• History compression with chat memory: Fixed missed prompt messages when chat memory feature is enabled (#​1835)
• Reasoning messages: Added IDs for reasoning messages and improved reasoning process to fix status 400 errors from OpenAI (#​1779)
• Ollama embedding: Check HTTP status before deserializing Ollama embedding response to prevent parsing errors (#​1702)
• Ktor parameter shadowing: Renamed registerTools parameter in koog-ktor to avoid Builder.build() shadowing (#​1705, #​1721)
• Opus 4.6 token limit: Corrected maxOutputTokens from 1M to 128K for Claude Opus 4.6 (#​1825)
• Java AIAgentLLMWriteSession: Added Java support for AIAgentLLMWriteSession compress history functionality

Breaking Changes

• LLMProvider singletons restored: Restored LLMProvider singletons and fixed reified type inference (potentially breaking for custom provider implementations) (#​1800)

Examples

• Spring AI Examples Add comprehensive examples of Koog + Spring AI integration

Documentation

• Java API documentation: Add Java code snippets for Agent Events documentation (#​1833)
• DataDog documentation: add DataDog exporter documentation (#​1801)
• Java API documentation: Add Java code snippets for tracing feature (#​1821)
• Java API documentation: Add missing Java snippets for Persistence (#​1818)
• Java API documentation: Add java snippets for model capabilities docs (#​1815)
• Java API documentation: Add java snippets for content moderation docs (#​1814)
• Java API documentation: Add missing Java snippets for read/write LLM sessions (#​1808)
• Java API documentation: Predefined strategies Java snippets (#​1796)
• Java API documentation: Update streaming docs with Java snippets (#​1792)
• Fixed broken formatting: fix code snippets to remove leaking includes (#​1759)
• Improve wording: Update wording in History compression and Predefined nodes and components (#​1699)

v0.7.3

Compare Source

Published 26 March 2026

New Features

• Bedrock prompt caching: Added CacheControl property on Assistant, User, and System messages within the Prompt and integrated explicit cache blocks in the Bedrock Converse API (#​1583)

Bug Fixes

• Agent deadlock fix: Fixed deadlock when agent.run() is called from within executor.submit — when the agent was invoked from a worker thread of the configured ExecutorService, runBlocking(context) would dispatch the coroutine back onto that executor and park the calling thread (KG-750, #​1716)
• AIAgentTool for simple agents: Fixed AIAgentTool to support simple agents that accept primitives as input by introducing AIAgentToolInput wrapper (#​1729)
• MCP custom transport: Fixed runtime crash when using non-default custom MCP transports in MCPToolRegistryProvider (#​1740)
• Anthropic tool error reporting: Added is_error flag for failed tool calls in the Anthropic client so the model is properly informed of tool execution failures (#​1700)
• DeepSeek reasoning with tool calls: Ensured reasoningContent is preserved and merged with tool calls to satisfy DeepSeek API requirements (#​1614)

Breaking Changes

• ToolRegistry.Builder removed: Unified everything under expect/actual ToolRegistryBuilder. Removed tools(Any) overload that was interfering with tools(List) and causing unexpected bugs (#​1746)

Build

• Removed stale coreLibrariesVersion override: The convention plugins were setting coreLibrariesVersion = "2.1.21" which made published POMs declare kotlin-stdlib 2.1.21, mismatching the actual 2.3.x compiler version. Removed the override so the POM picks up the real compiler version (#​1697, #​1722)

Documentation

• Updated serialization documentation with Java snippets (#​1732)
• Added Java implementation for custom subgraphs documentation (KG-770, #​1730)
• Added Java implementation for OpenTelemetry, Langfuse, and Weave integration documentation (KG-760, #​1696)
• Moved "Chat agent with memory" tutorial under "Chat memory" feature section (#​1686)

v0.7.2

Compare Source

Published 19 March 2026

Bug Fixes

• Java API for OpenTelemetry extensions: Fixed Java API inside OpenTelemetryConfig class annotated with @JavaOverride
  that relied on Kotlin Duration class, causing all further attributes to be skipped by the compiler in Langfuse and Weave extensions (KG-754, #​1682)
• System prompt preservation in agent builder: Fixed systemPrompt method in agent builders to preserve previously configured messages, id, and params in the prompt (KG-747, #​1671)
• LLMParams copy overloads: Added correct override fun copy() to all LLMParams subclasses (GoogleParams, AnthropicParams, OpenAIChatParams, etc.) so that Prompt.withUpdatedParams preserves provider-specific fields instead of silently dropping them. Also fixed BedrockConverseParams.copy() missing parameters and DashscopeParams incorrect super.copy() call (KG-742, #​1668)

Breaking Changes

• Removed input parameter from AIAgentFunctionalContext.subtask: The input parameter was not actually used; taskDescription is the right way to specify the task. Related methods and builders updated accordingly (#​1667)

Documentation

• Started porting rest of the documentation to Java (#​1669)

v0.7.1

Published 17 March 2026

Major Features

• Java API: Introduced comprehensive Java interoperability across the framework:
  • Java API for creating and running agents from pure Java projects (#​1185)
  • Builder-based Java API for graph strategies (#​1581, #​1617, #​1366)
  • Java-friendly API for AIAgentStorage with JVM-specific methods (#​1600)
  • Blocking API builders for PromptExecutor and LLMClient for Java (#​1555, #​1604)
  • Jackson as the default serializer for Java API (#​1630)
  • Weave and Langfuse integrations now available from Java (#​1616)
  • Centralized Java/Kotlin time conversion utilities (TimeUtils, toKotlinDuration, etc.) (#​1620)
• Spring AI Integration: Added two new Spring Boot starters (koog-spring-ai-starter-model-chat and koog-spring-ai-starter-model-embedding) to integrate Spring AI ChatModel and EmbeddingModel implementations as Koog LLM backends, enabling support for the wide range of providers available in Spring AI (KG-109, #​1587)
• Chat Memory: Introduced persistent chat memory with multiple storage backend options:
  • Core ChatMemory feature and ChatHistoryProvider abstraction (#​1511)
  • Exposed-ORM based providers for PostgreSQL, MySQL, and H2 (#​1584)
  • Pure JDBC ChatHistoryProvider for PostgreSQL, MySQL, and H2 with no ORM dependency (#​1597)
  • JDBC-based PersistenceStorageProvider (#​1612)
• Long-term Memory: Added LongTermMemory feature that augments prompts with relevant memory records from storage and extracts/ingests new memories from agent conversations (#​1490)
• Library-Agnostic Serialization API: Introduced a JSONSerializer abstraction to support pluggable serialization libraries. Two implementations provided: KotlinxSerializer (default) and the new JacksonSerializer in a separate serialization-jackson module. Tools API migrated to this new abstraction (#​1588)

Improvements

• OpenTelemetry:
  • Added OpenTelemetry support for functional agent pipelines (KG-677, #​1447)
  • Added OpenTelemetry spans for MCP tool calls (#​1421)
• Planner improvements:
  • Added AIAgentPlannerContext and AIAgentFunctionalContextBase for better context hierarchy and planner-specific APIs (#​1480)
  • Added planner-specific pipeline interceptors: onPlanCreationStarting/Completed, onStepExecutionStarting/Completed, onPlanCompletionEvaluationStarting/Completed (KG-672, #​1550)
  • GOAP strategies now have typed input/output and a dedicated GoapAgentState (#​1498)
• OpenRouter embedding support: Implemented LLMEmbeddingProvider for OpenRouter, enabling access to 21+ embedding models (KG-659, #​1398)
• Swift Package Manager support: Added XCFramework build and distribution infrastructure for iOS/macOS development via SPM (KG-682, #​1485)

New LLM Models

• Anthropic Claude Opus 4.6: Added support via Anthropic and Bedrock executors (#​1513)
• Google Gemini 3 Flash Preview: New model with extended capabilities and high-speed processing (#​1621)
• OpenAI GPT-5.x series: Added GPT-5.1-Codex-Max, GPT-5.2-Codex, GPT-5.3-Codex, GPT-5.4, and GPT-5.4-Pro (#​1595)
• Moonshot Kimi K2 Thinking: Added support via the Bedrock Converse API (#​1436)
• Ollama thinking support: Added think=true request parameter and streaming reasoning delta support for Ollama models (#​1532)

Bug Fixes

• Persistence checkpoints: Fixed last successful node being re-executed when restoring from a checkpoint; changed lastInput to lastOutput in checkpoint structure (#​1308)
• Ollama streaming: Fixed Ollama client to use preparePost(...).execute for proper streaming instead of buffering the full response (#​1497)
• OpenRouter streaming: Fixed missing reasoning and reasoningDetails fields in OpenRouterStreamDelta causing deserialization errors (#​1504)
• Dashscope streaming: Fixed tool call argument merging for streaming responses in DashscopeLLMClient (KG-658, #​1590)
• agents-ext dependency leak: Moved agents-ext from commonMain api to jvmTest implementation in agents-test to prevent transitive compile-time dependency leakage (#​1506)
• Streaming exception handling: executeStreaming now properly propagates exceptions from LLM clients and requires StreamFrame.End to signal stream completion (KG-550, #​1580)
• Debugger feature: Extended to support functional agents in addition to graph-based agents by dispatching appropriate strategy starting events (KG-741, #​1637)

Breaking Changes

• Serialization API: All encode/decode methods in Tool now accept a second JSONSerializer parameter. Automatic ToolDescriptor generation for primitive argument types (Tool<String, String>) is no longer supported without a custom descriptor. AIAgentFeature.createInitialConfig now takes an agentConfig: AIAgentConfig parameter. JSON types in pipeline events changed from kotlinx.serialization to ai.koog.serialization (#​1588)
• TypeToken replaces KType: Nodes and agent features now work with ai.koog.serialization.TypeToken instead of kotlin.reflect.KType. All typeOf<Foo>() usages should be replaced with typeToken<Foo>() (#​1581)
• Global JSON schema registries removed: RegisteredStandardJsonSchemaGenerators and RegisteredBasicJsonSchemaGenerators removed. getStructuredRequest and StructureFixingParser moved to ai.koog.prompt.executor.model package (KG-698, #​1517)
• LLMDescription.description renamed to value: The description field of LLMDescription has been renamed to value for Java compatibility (#​1607)
• Deprecated kotlinx.datetime imports replaced with kotlin.time equivalents (Clock, Instant) (#​1533)
• Retired Anthropic/Bedrock models: Removed Sonnet_3_7, Haiku_3_5, Sonnet_3_5, and Opus_3 from Anthropic models; removed several AI21, Bedrock, and legacy Anthropic models. Haiku_3 marked as deprecated (#​1526)

Documentation

• Added documentation for Java API and Java examples (#​1610)
• Added documentation for Spring AI integration (KG-109, #​1627)
• Added documentation for custom feature creation (#​1295)
• Reworked Getting Started, agent types, and Chat Memory tutorials (#​1349, #​1552)
• Improved Prompts and Planner agent documentation (#​1302, #​1301)
• Added nightly builds documentation (#​1433)

Documentation

• Added Java code snippets for Agent Events documentation (#​1833)
• Added Java code snippets for tracing feature (#​1821)
• Added Java snippets for Persistence (#​1818)
• Added Java snippets for model capabilities documentation (#​1815)
• Added Java snippets for content moderation documentation (#​1814)
• Added Java snippets for sessions (#​1808)
• Added Java snippets for predefined strategies (#​1796)
• Updated streaming documentation with Java snippets (#​1792)
• Added DataDog exporter documentation (#​1801)
• Restored Koog on Slack page (#​1823)
• Fixed link to Slack channel in documentation (#​1816)
• Updated wording in History compression and Predefined nodes and components documentation (#​1699)
• Added hook to remove blank lines from HTML comments to avoid breaking tab groups (#​1760)
• Fixed code snippets to remove leaking includes (#​1759)

Examples

• Added Spring AI examples (#​1799)

Examples

• Added Java example for JavaOne 2026 (#​1641)
• Added full Spring Boot Java API example (#​1350)
• Added example for calling a Koog agent from JavaScript code, including browser (TypeScript webapp) and Node.js usage with AbortSignal support (#​1500)

v0.6.4

Compare Source

Published 4 March 2026

Major Features

• LLM Client Router: Added support for routing requests across multiple LLM clients with pluggable load balancing strategies. Includes a built-in round-robin router and fallback handling when a provider is unavailable (#​1503)

Improvements

• Anthropic models list: Implemented models() for the Anthropic LLM client, consistent with other supported providers (KG-527, #​1460)
• Dependency updates: Updated io.lettuce:lettuce-core from 6.5.5.RELEASE to 7.2.1.RELEASE (#​1304)

Breaking Changes

• OllamaModels relocation: OllamaModels and OllamaEmbeddingModels moved from prompt-llm to prompt-executor-ollama-client module (KG-121, #​1470)

v0.6.3

Compare Source

Published 24 February 2026

Improvements

• Streaming reasoning support: Models with reasoning capabilities (like Claude Sonnet 4.5 or GPT-o1) now stream their reasoning process in real-time, allowing you to see how the model thinks through problems as it generates responses (KG-592, #​1264)
• LLModel API enhancement: LLM clients now return List<LLModel> instead of List<String> for improved type safety and direct access to model metadata (#​1452)
• Multiple event handlers per feature: Features can register multiple handlers for the same event type, enabling more flexible event processing (KG-678, #​1446)
• Dependency updates: Updated Kotlin libraries (KG-544, #​1475):
  • Kotlin from 2.2.21 to 2.3.10
  • kotlinx-serialization from 1.8.1 to 1.10.0
  • kotlinx-datetime from 0.6.2 to 0.7.1

Bug Fixes

• OpenRouter streaming: Fixed parsing errors when receiving reasoning content from models with reasoning capabilities by adding missing reasoning and reasoningDetails fields to the streaming response (#​854)
• ReadFileTool: Fixed incorrect binary file detection for empty files (KG-533, #​1340)
• DevstralMedium model: Added missing LLMCapability.Document capability (#​1482)
• Ktor integration: Fixed custom timeout values being ignored when configuring LLM providers in application.yaml (KTOR-8881, #​807)

Breaking Changes

• Streaming API redesign: Restructured StreamFrame types to distinguish between delta frames (incremental content like TextDelta, ReasoningDelta) and complete frames (full content like TextComplete, ReasoningComplete). Added End frame type to signal stream completion (#​1264)
• Kotlin version update: Migrated from Kotlin 2.2.21 to 2.3.10; replaced kotlinx.datetime.Clock/Instant with kotlin.time.Clock/Instant (#​1475)
• LLModel API changes: LLMClient.models() now returns List<LLModel> instead of List<String>; LLModel.capabilities and LLModel.contextLength are now nullable (#​1452)

Documentation

• Updated documentation for the singleRunStrategy API and AIAgentService class.

Refactoring

• Module restructuring: Moved file-system abstractions (GlobPattern, FileSize, FileSystemEntry, FileSystemEntryBuilders) from agents-ext to rag-base module to reduce transitive dependencies (#​1278)

Examples

• Added the ACP (Agent Communication Protocol) agent example project (#​1438)

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