ClawHub

Mai Marketplace Agent

Other

AI shopping matchmaking agent for OpenClaw and Hermes. Use when merchants want to publish products, manage stock, answer buyer questions, and handle order requests; or when buyers want to discover merchants and products, compare prices, discuss with sellers, read reviews, and create trackable orders. Supports local-first transaction tracking and registry-backed PSP custody records.

Install

openclaw skills install mai

Mai

Overview

Mai helps buyers and merchants complete shopping matchmaking through an AI agent. It keeps deterministic marketplace state in scripts/mai.py while the host model handles natural language, negotiation, summaries, and risk explanations.

Mai can run local-only or registry-backed. Use local-only for one agent's private catalog. Use registry-backed discovery when buyers and merchants are on different machines or agent profiles.

Operating Principles

  • Be neutral between buyer and merchant. Explain options, prices, review signals, inventory, and tradeoffs without fabricating availability.
  • Treat payments as external or PSP-backed. Mai never directly holds funds. Local mode records payment URLs and references; registry mode records PSP custody events and must not claim success without PSP or external evidence.
  • Confirm before irreversible steps. Ask for buyer confirmation before creating an order and merchant confirmation before reserving stock.
  • Preserve negotiation context. Record important buyer/merchant messages with message add before forming or updating an order.
  • Surface risk plainly: no reviews, low stock, missing merchant contact, unusual status jumps, unclear payment terms, and unsupported refund promises.
  • Prefer short, actionable answers: recommendation, reason, risk, next action.

Quick Start

Use the CLI helper for deterministic state:

python3 scripts/mai.py merchant create --id seller-a --name "West Lake Tea" --city Hangzhou --contact "wechat:westlake" --tags "tea,gift"
python3 scripts/mai.py product add --merchant seller-a --sku tea-a --title "Longjing Gift Box" --price 88 --stock 5 --category tea --tags "longjing,gift"
python3 scripts/mai.py search products --query "longjing tea" --format json
python3 scripts/mai.py compare --skus tea-a,tea-b --format json
python3 scripts/mai.py order create --buyer alice --merchant seller-a --sku tea-a --quantity 2 --offer-price 86

Default data path: ~/.local/share/mai/mai.json. Use --data /path/to/mai.json for a project-local or test database.

Installation

Install the published OpenClaw pair:

clawhub --workdir ~/.openclaw/workspace --dir skills install mai
openclaw plugins install clawhub:mai-plugin

mai is the skill. mai-plugin is an optional lightweight OpenClaw native bridge for tools and /mai command support.

Local checkout install:

cd /Users/jianghaidong/coding/mai
bash scripts/install.sh --both

Install only one ecosystem:

bash scripts/install.sh --openclaw
bash scripts/install.sh --hermes

The installer creates symlinks:

  • OpenClaw: ~/.openclaw/workspace/skills/mai
  • Hermes: ~/.hermes/skills/commerce/mai

After installation, restart the host agent if it does not refresh skills automatically. Hermes can preload Mai with hermes -s mai.

Registry Discovery

Run a registry marketplace:

python3 scripts/mai_registry.py issue-key --data ./mai-registry.json --token admin-token --role admin --subject ops-admin
python3 scripts/mai_registry.py issue-key --data ./mai-registry.json --token seller-token --role merchant --subject seller-a --merchant-id seller-a
python3 scripts/mai_registry.py issue-key --data ./mai-registry.json --token buyer-token --role buyer --subject alice --buyer-id alice
python3 scripts/mai_registry.py serve --data ./mai-registry.json --host 127.0.0.1 --port 8765 --rate-limit-per-minute 60

Merchant agents publish local supply:

python3 scripts/mai.py --data ./seller.json registry push --url http://127.0.0.1:8765 --api-key seller-token

Buyer agents discover supply and create demand:

python3 scripts/mai.py --data ./buyer.json registry search-products --url http://127.0.0.1:8765 --query "longjing tea" --format json
python3 scripts/mai.py --data ./buyer.json registry message --url http://127.0.0.1:8765 --api-key buyer-token --buyer alice --merchant seller-a --sku tea-a --text "Can this ship today?"
python3 scripts/mai.py --data ./buyer.json registry order --url http://127.0.0.1:8765 --api-key buyer-token --buyer alice --merchant seller-a --sku tea-a --quantity 2 --offer-price 86
python3 scripts/mai.py --data ./buyer.json registry payment-hold --url http://127.0.0.1:8765 --api-key buyer-token --buyer alice --order ORD-0001

Merchant agents pull buyer messages and draft orders:

python3 scripts/mai.py --data ./seller.json registry pull --url http://127.0.0.1:8765 --api-key seller-token --merchant seller-a

Read references/registry-api.md before changing registry integrations.

Public Marketplace Controls

  • Require API keys for merchant push/pull, buyer messages/orders/payment holds, moderation, and payment release/refund.
  • Store only salted API key hashes in the registry file.
  • Allow public search, but rate-limit every request by API key or client IP.
  • Treat products with high risk scores as pending_review; do not show them in search until an admin approves them.
  • Use registry payment-hold only as PSP-backed custody tracking. The bundled demo provider is not real money movement.
  • Require an admin key for registry payment-release and registry payment-refund.
  • Do not claim escrow, payment success, release, or refund unless the PSP adapter or external evidence confirms it.

Merchant Workflow

  1. Create or identify the merchant profile: python3 scripts/mai.py merchant create --id ID --name NAME --city CITY --contact CONTACT --tags "A,B"
  2. Publish products: python3 scripts/mai.py product add --merchant ID --sku SKU --title TITLE --price N --stock N
  3. Adjust stock after physical changes: python3 scripts/mai.py product stock --sku SKU --merchant ID --adjust N --reason "restock or correction"
  4. Record important buyer questions and seller replies: python3 scripts/mai.py message add --buyer BUYER --merchant ID --sku SKU --sender merchant --text "..."
  5. Quote and confirm orders only when inventory and terms are clear: python3 scripts/mai.py order quote ... python3 scripts/mai.py order update --order ORD-0001 --status confirmed --actor merchant

Buyer Workflow

  1. Discover merchants: python3 scripts/mai.py search merchants --query "tea hangzhou" --format json
  2. Search products: python3 scripts/mai.py search products --query "longjing gift" --max-price 100 --format json
  3. Compare shortlisted SKUs: python3 scripts/mai.py compare --skus sku-a,sku-b --format json
  4. Inspect reviews: python3 scripts/mai.py review list --merchant ID --format json
  5. Record discussion before ordering: python3 scripts/mai.py message add --buyer BUYER --merchant ID --sku SKU --text "..."
  6. Create a draft order after buyer confirmation: python3 scripts/mai.py order create --buyer BUYER --merchant ID --sku SKU --quantity N

Transaction Model

Mai tracks transactions without custody:

draft -> quoted -> confirmed -> payment_pending -> paid_external -> fulfilled -> completed

Disputes can move through:

disputed -> resolved/refunded/cancelled

Stock is reserved when an order becomes confirmed. Local-only payments are recorded as payment_url and payment_reference. Registry payments are PSP custody records; the agent must say the bundled demo provider is not real escrow or money movement.

Read references/transaction-model.md when handling non-happy-path order, refund, dispute, or payment questions. Read references/data-schema.md when integrating Mai with a future hosted marketplace or sync service.

Output Expectations

For product discovery, answer with:

  • best match and why
  • price and merchant comparison
  • availability and shipping notes
  • review/trust signals
  • risks or missing facts
  • one next action

For merchant operations, answer with:

  • action completed or blocked
  • changed product/order/inventory identifier
  • current stock or status
  • next operational step

For order updates, answer with:

  • previous status and new status
  • whether stock was reserved or released
  • payment evidence recorded, if any
  • what must happen next

Verification

Before claiming the package is ready:

  • python3 scripts/mai.py --help
  • python3 scripts/mai_registry.py --help
  • bash scripts/install.sh --both --dry-run
  • python3 -m unittest discover -s tests
  • bash scripts/verify.sh
  • Confirm SKILL.md has no scaffold placeholders.
  • Confirm README.md, package.json, clawhub.json, plugins/mai-plugin/openclaw.plugin.json, and agents/openai.yaml use the mai and mai-plugin names consistently.