Claus Ibsen created CAMEL-23928:
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Summary: camel-langchain4j-agent - Add AiServices builder
customizer hook to AgentConfiguration
Key: CAMEL-23928
URL: https://issues.apache.org/jira/browse/CAMEL-23928
Project: Camel
Issue Type: Improvement
Components: camel-langchain4j-agent
Reporter: Claus Ibsen
AgentConfiguration does not expose several important LangChain4j AiServices
builder options that are needed for agent runtimes, specifically around
tool-calling error handling and control:
- hallucinatedToolNameStrategy
- toolArgumentsErrorHandler
- toolExecutionErrorHandler
- maxToolCallingRoundTrips
- beforeToolExecution / afterToolExecution
- executeToolsConcurrently
- toolSearchStrategy
- compensateOnToolErrors
*Concrete use case:* an LLM hallucinated a task_complete tool name, and
LangChain4j's hallucinatedToolNameStrategy would handle this gracefully, but it
is not reachable through Camel's agent abstraction.
The createAiAgentService() methods in AgentWithMemory / AgentWithoutMemory are
private, so subclassing cannot intercept the builder. The only current
workaround is implementing AgentFactory to return a fully custom Agent, but
that requires reimplementing all the common setup logic from
AbstractAgent.configureBuilder() (tool providers, MCP, guardrails, RAG,
response format).
*Proposed solution:* add a Consumer<AiServices<?>> customizer callback to
AgentConfiguration that is invoked in AbstractAgent.configureBuilder() just
before the method returns. This lets users configure any AiServices builder
option without Camel needing to individually wrap each one, and avoids having
to reimplement configureBuilder() via AgentFactory.
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