A finance ERP showcase powered by CopilotKit deep agents. An AI assistant can analyze invoices, review accounts, check inventory, manage HR data, generate financial reports, compose themed dashboards, and provide actionable business insights.

Stack: Next.js 16 (frontend) + FastAPI / LangGraph (agent) + Postgres (persistence) + CopilotKit (AI layer)

Highlights:

7 frontend tools (6 UI + 1 HITL) registered via useRenderTool / useHumanInTheLoop
12 dashboard widget types with 4 pre-built templates (Executive Summary, Cash Flow Risk, Cost Control, Revenue Overview)
Dashboard gallery (/dashboards) for browsing, loading, saving, and deleting layouts
Multi-agent orchestration: orchestrator + research subagent (13 tools) + projections subagent (6 tools)
Human-in-the-loop approval for invoice payments and inventory reorders

Prerequisites

Docker (for Postgres)
Python 3.11+
Node.js 18+
An OpenAI API key

Quick start

npm run dev:all

This single command starts Postgres, seeds the database, launches the agent, and runs the frontend. Open http://localhost:3000.

Step-by-step setup

1. Postgres

npm run db        # start the container
npm run db:seed   # start container + seed tables

2. Agent (Python)

Copy the example env and add your OpenAI key:

cp agent/.env.example agent/.env
# edit agent/.env — set OPENAI_API_KEY

Then start the agent:

npm run agent     # installs deps in a venv, starts FastAPI on port 8123

3. Frontend (Next.js)

npm run env:init  # creates .env.local from example (if missing)
npm run dev       # starts Next.js on port 3000

Environment variables

`agent/.env`

Variable	Description
`OPENAI_API_KEY`	OpenAI API key (required)
`OPENAI_MODEL`	Model to use (default: `gpt-5.4-2026-03-05`)
`DATABASE_URL`	Postgres connection string (default: `postgresql://erp_user:erp_password@localhost:5432/finance_erp`)
`LANGCHAIN_API_KEY`	LangSmith key for tracing (optional)

`.env.local`

Variable	Description
`REMOTE_ACTION_URL`	Agent URL (default: `http://localhost:8123/copilotkit/agents/finance_erp_agent`)

Scripts

Script	Description
`npm run dev:all`	Start everything (Postgres + seed + agent + frontend)
`npm run db`	Start Postgres container
`npm run db:seed`	Start Postgres and seed tables
`npm run agent`	Install Python deps and start the agent (port 8123)
`npm run dev`	Start Next.js dev server (port 3000)
`npm run env:init`	Create `.env.local` from example (if missing)
`npm run stop`	Stop all running services
`npm run clean`	Stop services, remove container and Python venv

Architecture

Browser (:3000)
  |
  |  Next.js API route (/api/copilotkit)
  |       |
  |       v
  |  CopilotKit Runtime (LangGraphHttpAgent)
  |       |  AG-UI / SSE
  |       v
  |  FastAPI (:8123)
  |       |
  |       v
  |  LangGraph Orchestrator (7 frontend tools + task)
  |      /         \
  |     v           v
  |  Research    Projections
  |  Sub-agent   Sub-agent
  |  (13 tools)  (6 tools)
  |     |
  |     v
  |  Postgres (:5432) — dashboards, seed data
  |

Pages

Route	Description
`/`	Dashboard — KPI cards, charts, transactions, invoices (agent-composable)
`/dashboards`	Gallery — browse templates, save/load/delete custom layouts
`/invoices`	Invoice list with filtering and summary cards
`/accounts`	Chart of accounts and transaction ledger
`/inventory`	Stock management and reorder alerts
`/hr`	Employee directory and department breakdown