Koog 1.0 idioms, gotchas, and scaffolding skills for Kotlin agents on the JVM
71
88%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Advisory
Suggest reviewing before use
The infix vocabulary in the strategy DSL splits across two shapes. Inventing a member import or omitting an extension import is the most common copy-paste compile failure when authoring strategies by hand.
| Primitive | Kind | Import needed? |
|---|---|---|
forwardTo | infix member on AIAgentNodeBase | No |
onCondition | infix member on AIAgentEdgeBuilderIntermediate | No |
transformed | infix member on AIAgentEdgeBuilderIntermediate | No |
onToolCalls | top-level extension | import ai.koog.agents.core.dsl.extension.onToolCalls |
onTextMessage | top-level extension | import ai.koog.agents.core.dsl.extension.onTextMessage |
onIsInstance | top-level extension | import ai.koog.agents.core.dsl.extension.onIsInstance |
onMessageParts | top-level extension | import ai.koog.agents.core.dsl.extension.onMessageParts |
onSuccessful / onFailure | top-level extensions | import ai.koog.agents.core.dsl.extension.onSuccessful / onFailure |
asUserMessage / asToolResultMessage | top-level extensions | import ai.koog.agents.core.dsl.extension.asUserMessage / asToolResultMessage |
Members travel with their receiver type and need no import. Extensions live
in ai.koog.agents.core.dsl.extension.* and must be imported by name.
Star-imports work but obscure which DSL surface is actually in use.
skills
add-observability
add-persistence
add-rag
add-structured-output
add-token-budgeting
add-tool
cache-llm-calls
define-prompt
domain-model-subtask-pipeline
references
enable-prompt-caching
handle-agent-events
manage-state
migrate-from-0-x
model-planner-subtasks
persist-chat-history
query-sql-from-agent
scaffold-agent
snapshot-and-restore
test-koog-agents
trace-agent-internals
use-attachments
use-functional-agent
use-llm-node-variants
use-planner
wire-a2a
wire-acp-server
wire-ktor-server
wire-mcp-server
wire-spring-boot