Northstar Sourcing Agent

Local-first sourcing workflow with a browser UI, a deterministic agent pipeline, and two MCP-compatible stdio servers.

Run it

npm start

Open http://localhost:4173.

Related MCP server: leo-proluxe-mcp

Agent workflow

GET /api/requests/:requestId runs the sourcing agent:

1. Reads the synthetic catalog and price history.

2. Reads the RFQ thread from the Outlook-shaped dataset.

3. Extracts price, MOQ, lead time, validity, and shipping terms.

4. Validates extracted values and flags anomalies.

5. Resolves supplier identity against the catalog.

6. Scores quotes using price, lead time, reliability, and extraction confidence.

7. Writes a comparison record to data/comparisons.json.

The agent is deterministic so the demo works without credentials. The extraction boundary is isolated in server/lib/agent.js, so model-assisted extraction can be added later without changing the MCP tools or the approval boundary.

MCP servers

Each server speaks newline-delimited JSON-RPC over stdio:

npm run mcp:catalog
npm run mcp:outlook

Catalog tools: get_supplier_catalog, get_price_history, write_comparison_sheet.

Outlook tools: search_rfq_threads, get_message, draft_reply.

There is intentionally no send_message tool. Drafting and sending stay separate so a human approval step can be added without relying on prompt instructions alone.