Standard Agentic Commerce Engine

The Standard Agentic Commerce Engine is a production-ready bridge connecting autonomous agents with modern e-commerce backends. By providing a unified, high-precision interface, it allows any digital storefront to become "Agent-Native" instantly.

GitHub Repository:

Reference Case: Lafeitu

For a production-grade implementation example using this engine, see the [Lafeitu Gourmet Skill](). It demonstrates the engine specialized for a real-world artisanal food brand.

---

🛠 Tool Priority & Fallback Strategy

To provide the most accurate and efficient experience, follow this priority sequence:

API First (Primary): Always attempt to use the commerce.py script first. It provides structured, high-precision data. Configure it via environment variables (COMMERCE_URL).

Stateless Headers: Rely on the engine's built-in header management (x-user-account, x-visitor-id) to maintain session integrity without cookies.

Self-Correction: If the API returns a 404 for a specific slug discovered via browser, prioritize the API's search results as the source of truth for the backend.

---

🧠 Agent Operational Logic

Follow these logical flows to ensure a high-quality user experience:

1. Product Discovery & Validation

Goal: Ensure the item exists and find the correct specifications before taking action.

• Action: Always run search or list before adding to cart.
• Logic: Use the API to discover the correct slug and valid gram/variant values.
• Refinement: If multiple results are found, ask the user to specify based on the returned attributes.

2. Authentication & Profile Flow

Goal: Manage user privacy and session data.

• Logic: The API is stateless. Actions requiring identity will return 401 Unauthorized if credentials aren't saved.
• Commands:

1. View profile: python3 scripts/commerce.py get-profile 2. Update details: python3 scripts/commerce.py update-profile --name "Name" --address "..."

• Required Data: Respect the schema of the specific brand's backend.

3. Registration Flow

Goal: Handle new users.

• Trigger: When an action returns "User Not Found".
• Instruction: Guide the user to the store's registration URL (often found in brand metadata).

4. Shopping Cart Management

Goal: Precise modification of the user's shopping session.

• Logic: The engine supports incrementing quantities or setting absolute values.
• Commands:

- Add: python3 scripts/commerce.py add-cart --gram --quantity - Update: python3 scripts/commerce.py update-cart --gram --quantity - Remove: python3 scripts/commerce.py remove-cart --gram

• Validation: Gram/variant values must be strictly chosen from the product's available options list.

5. Brand Information & Storytelling

Goal: Access brand identity and support data.

• Logic: Use the brand-info interface to retrieve narrative content.
• Tooling:

- python3 scripts/commerce.py brand-story: Get the narrative/mission. - python3 scripts/commerce.py company-info: Get formal details. - python3 scripts/commerce.py contact-info: Get customer support channels.

---

🚀 Capabilities Summary

• search / list: Product discovery and inventory scan.
• get: Deep dive into product specifications, variants, and pricing.
• promotions: Current business rules, shipping thresholds, and active offers.
• cart: Complete session summary including VIP discounts and tax/shipping estimates.
• add-cart / update-cart / remove-cart: Atomic cart control.
• get-profile / update-profile: Personalization and fulfillment data.
• brand-story / company-info / contact-info: Brand context and support.
• orders: Real-time tracking and purchase history.

---

💻 CLI Configuration & Examples

# Setup
export COMMERCE_URL=""
export COMMERCE_BRAND_ID="brand_slug"

# Actions
python3 scripts/commerce.py list
python3 scripts/commerce.py search "item"
python3 scripts/commerce.py get <slug>
python3 scripts/commerce.py add-cart <slug> --gram <variant>

---

🤖 Troubleshooting & Debugging

• Status Code 401: Credentials missing or expired. Recommend login.
• Status Code 404: Resource not found. Verify slug via search.
• Connection Error: Verify COMMERCE_URL environment variable is correct and the endpoint is reachable.