Future AGI × LangChain4j

LangChain4j on Future AGI

Agent Frameworks

Java-native chains, agents, and RAG with LangChain4j.

java · trace evaluate

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What you get

Everything traced, scored, and improvable

One install instruments LangChain4j on OpenTelemetry. Future AGI then layers evaluators, optimisers, and simulations on top of the same trace tree — no second SDK, no double instrumentation.

Trace

Auto-instrumented spans

Every LangChain4j call becomes a span — inputs, outputs, latency, tokens, cost, model name, tool args, retrieval results, and chain steps captured automatically.

Evaluate

70+ evaluators on every span

Attach Groundedness, Context Relevance, Prompt Injection, Toxicity, and 70+ more — purpose-built scorers powered by the Turing eval models, not generic LLM-as-judge.

Optimize

Closed-loop improvement

Pipe failed traces into agent-opt: GEPA, PromptWizard, ProTeGi, and Bayesian search rewrite your prompts with proof of measured gains.

Simulate

Adversarial scenarios at scale

Generate hundreds of personas and run them through your LangChain4j agent before launch — text and voice, scripted or persona-driven.

Quickstart · <3 min

Instrument LangChain4j in three steps

Step 1

Install the traceAI package

One package per language, ships from PyPI, npm, and Maven Central.
Step 2

Register the trace provider

Set FI_API_KEY and FI_SECRET_KEY, then call LangChain4jInstrumentor().instrument().
Step 3

Run your existing LangChain4j app

No code changes. Traces appear in the Future AGI dashboard within seconds.

Install

<dependency>
  <groupId>ai.futureagi</groupId>
  <artifactId>traceai-langchain4j</artifactId>
  <version>LATEST</version>
</dependency>

Instrument

import ai.futureagi.fi.instrumentation.TraceProvider;
import ai.futureagi.traceai.langchain4j.LangChain4jInstrumentor;

TraceProvider provider = TraceProvider.builder()
    .projectName("langchain4j_app")
    .projectType("observe")
    .build();

new LangChain4jInstrumentor().instrument(provider);

// Your existing LangChain4j code runs unchanged.
// Every call is now an OpenTelemetry span in Future AGI.

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