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Building agents on the JVM with Embabel · Part 7
My agent refused to run a single action. The @Condition gate was FALSE and nothing in the agent could ever make it TRUE, because Embabel builds an action's effects from what you declare, not from what your condition reads.
Building agents on the JVM with Embabel · Part 6
Turning my JVM agents into MCP tools took one dependency and one annotation. It also took three silent failures -- a starter that suppresses the web server, a shell that eats your CLI flags, and an annotation default that publishes exactly zero tools without telling you.
Building agents on the JVM with Embabel · Part 5
I pointed my Embabel agents at a local Grafana LGTM stack and saw nothing. Three configuration gotchas later, every GOAP planning step, LLM call and tool loop shows up as a span in Tempo. Here is the full walkthrough, with screenshots.
Building agents on the JVM with Embabel · Part 4
In regulated work the dangerous agent is the one that acts without asking. Here's how I made an Embabel agent pause for human approval before moving money -- with the approval built into the type graph, not an if-check.
Building agents on the JVM with Embabel · Part 3
An LLM cannot know a live account balance, and in banking a confidently hallucinated number is a disaster. The fix is a tool. Here's how @LlmTool works in Embabel on the JVM, plus the one API gotcha that cost me a compile.
Building agents on the JVM with Embabel · Part 2
The non-deterministic part of an agent is the LLM. Box it out and the rest is ordinary, deterministic code you can test. Here's how I test Embabel agents on the JVM without spending a single token.
Building agents on the JVM with Embabel · Part 1
My first afternoon with Embabel, the JVM agent framework. I added one action too many, the planner quietly stopped early, and a cryptic get(...) must not be null taught me how GOAP, goals, and AgentInvocation actually fit together.