Lexic
DocsSign InGet Started

Expert Brains for AI Agents

Hot-swappable Subject Matter Expert plugins that turn generalist AI into verified domain specialists. Cited answers, decision-tree reasoning, zero hallucination.

Start BuildingSee How It Works
terminal
POST /api/v1/query
{
  "plugin": "structural-eng-v1",
  "query":  "Min cover for a beam in severe exposure?"
}

→ "45mm nominal cover (IS 456, Table 16)" [Source 1]
→ confidence: high

How Lexic Works

Three actors, one API. Experts build plugins, developers query them, end users get better answers.

1. Expert Builds Plugin

Upload PDFs, standards, and reference documents. Define decision trees for structured reasoning. Set citation rules.

2. Developer Integrates

One API call or SDK wrapper. Works with LangChain, AutoGPT, or any custom agent. No training required.

3. User Gets Answers

Cited, decision-tree-backed answers from their existing AI tools. Source-linked, auditable, hallucination-free.

Why Lexic?

Hot-Swappable

Change the plugin slug → instant domain switch. No restart, no retrain, no redeploy.

Hallucination Guard

If no source supports a claim, the system refuses to guess. Every answer is evidence-backed.

Decision Trees

Structured domain reasoning on top of RAG. Not just retrieval — actual expert logic.

Mandatory Citations

Every claim links to source documents with page and section references. Fully auditable.

Framework Agnostic

REST API works with anything. SDK adapters for LangChain, AutoGPT, and more.

5-Minute Integration

One API key, one POST request. From zero to expert-grade answers in minutes.

Ready to build your expert plugin?

Create a plugin in minutes. Upload your domain knowledge, define reasoning trees, and give any AI agent expert-grade capabilities.

Get Started Free
Lexic

Built for HackX 2026