⚡ RazorAgent by Resence

Bounded Model Context Protocol (MCP) Commerce & Settlement Gateway for Autonomous AI Buyers
Engineered by: Resence · Piyush Singh
Package Version: v1.1.5 (Zero-Dependency Node.js SDK & Standalone CLI)
Live Production Gateway: https://razoragent.resence.in
NPM Package Registry: https://www.npmjs.com/package/razoragent
MCP JSON-RPC Endpoint: https://razoragent.resence.in/api/razoragent/mcp
Install Command: npm install razoragent

📦 1. What is RazorAgent?

RazorAgent is an open-source TypeScript SDK and CLI that turns a merchant's existing e-commerce backend (Shopify, WooCommerce, or a custom catalog) into a Model Context Protocol (MCP) server with pre-settlement guardrails and Razorpay order creation.

Developers install razoragent, configure their store credentials and Razorpay API keys in environment variables, and run it as an isolated service on their own infrastructure. Autonomous buying agents (such as Claude Desktop, OpenAI Operator, or custom agent frameworks) can then query the catalog, calculate tax-inclusive quotes, and create verified Razorpay orders over standard JSON-RPC 2.0.

The web interface at razoragent.resence.in and the CLI (npx razoragent) are reference deployments demonstrating the complete search, quoting, guardrail evaluation, and settlement pipeline against live APIs.

Related MCP server: Allowance MCP

🎯 2. What RazorAgent Solves

Traditional e-commerce is built for human eyes and fingers—visual layouts, CSS styling, clickable DOM buttons, and human-in-the-loop OTP checkouts.

By 2026, commerce is transitioning to Autonomous AI Agents (OpenAI Operator, Claude Computer Use, Gemini Agentic Workflows, NPCI Unified Agent Protocol) researching and purchasing on behalf of consumers and enterprises.

However, letting AI agents interact directly with legacy checkout endpoints creates 4 critical failure modes:

1. Financial Hallucinations: LLMs generating fabricated price amounts or ordering invalid product variants.

2. Double-Billing from Network Jitter: AI agents retrying timed-out requests and triggering duplicate payment orders.

3. Unbounded Spending: No mathematical guarantee that an agent won't exceed user budgets or liquidate inventory.

4. Lack of Standardized Tooling: Fragile web scraping instead of structured tool interfaces.

RazorAgent bridges this gap. It turns any merchant store (Shopify, WooCommerce, or custom databases) into a standardized Model Context Protocol (MCP) server, enabling AI shopping agents to discover products, compute tax-accurate quotes, and complete transactions through Razorpay APIs—backed by deterministic mathematical guardrails and SHA-256 cryptographic idempotency locks.

🏛️ 3. System Architecture & Universal MCP Availability

RazorAgent is an open, universally accessible gateway. Any AI agent (Claude Desktop, OpenAI Operator, Gemini CLI, Cursor, or custom Python agent) connects via standard JSON-RPC 2.0:

flowchart TD
    subgraph Client["🤖 Universal AI Buyer Clients"]
        Agent1["Claude Desktop / Anthropic SDK"]
        Agent2["OpenAI Operator / Function Calling"]
        Agent3["Gemini 2.0 / NPCI UAP Protocol"]
    end

    subgraph Gateway["🛡️ RazorAgent MCP & Policy Gateway (Next.js Edge)"]
        Agent1 & Agent2 & Agent3 -->|"JSON-RPC 2.0 (/api/razoragent/mcp)"| MCP["MCP Tool Dispatcher"]
        
        MCP --> CatalogAdapter["Pluggable Catalog Adapter Layer\n(CatalogProvider Interface)"]
        
        CatalogAdapter --> Prov1["DemoCatalogProvider\n(32+ In-Memory SKUs)"]
        CatalogAdapter --> Prov2["ShopifyCatalogProvider\n(Storefront GraphQL API)"]
        CatalogAdapter --> Prov3["WooCommerceCatalogProvider\n(REST API v3)"]
        
        MCP --> Quoting["Tax & Promotion Engine\n(18% GST + Coupons)"]
        
        Quoting --> Guardrails{"Deterministic\nPolicy Engine"}
        
        Guardrails -->|"Budget / Qty / Category Check"| PolicyPassed["Policy Evaluated"]
        
        PolicyPassed -->|"Pass"| Idempotency["SHA-256 Idempotency Lock\n(Anti-Race Condition)"]
        PolicyPassed -->|"Fail"| Reject["Structured Error Response\n(BUDGET_EXCEEDED / QTY_LIMIT)"]
    end

    subgraph Settlement["💳 Razorpay Fintech Settlement"]
        Idempotency -->|"Deterministic Order Payload"| RzpAPI["Razorpay Orders API\n(Dual-Mode: Sandbox / Live)"]
        RzpAPI --> Order["Order ID (order_xxx)\n+ Standard Checkout Overlay"]
        Order --> Webhook["HMAC-SHA256\nWebhook Signature Verifier"]
    end

    subgraph Console["📊 Merchant Mission Control Dashboard"]
        RzpAPI --> Analytics["GMV Uplift & Analytics\n(Human vs. Agentic Split)"]
        Idempotency --> AuditTrail["Live Fintech Webhook Stream"]
        CatalogAdapter --> StockManager["Real-Time Inventory & Price Controls"]
    end

🛠️ 4. Standardized MCP Commerce Tools

RazorAgent exposes 6 standard Model Context Protocol tools via JSON-RPC 2.0 (/api/razoragent/mcp):

⚡ 5. High-Availability Engineering: The Concurrency Challenge

The Problem: The LLM Non-Deterministic Retry Race Condition

During stress testing with concurrent autonomous shopping agents, simulated network jitter (1.5-second latency on order creation) triggered a critical issue:

The AI Buyer Agent assumed the request had timed out, hallucinatively mutated its nonce, and fired a concurrent retry of create_guarded_order. Because standard payment deduplication relied on client-supplied tokens, both requests reached the order creation pipeline 20 milliseconds apart, generating duplicate orders for a single cart.

The Engineering Solution:

1. Canonical SHA-256 Fingerprinting: An immutable payload fingerprint:

Hash = SHA256(agent_id + canonical_sorted_cart_items + total_amount + time_window)

2. Two-Phase Concurrency Latch: In-memory promise locking with atomic state transitions:

INITIATED ───► LOCKED ───► ORDER_CREATED ───► CAPTURED

Any concurrent thread hitting the gateway while an order is in-flight is held on the same promise and receives the cached order_xxx ID without firing duplicate Razorpay API calls.

3. Structured Semantic Interception Feedback: Rather than returning a generic HTTP 409 conflict, the gateway returns IDEMPOTENCY_RETRY_SUPPRESSED with the active order receipt, allowing the agent to proceed to payment confirmation seamlessly.

(You can verify this automatically via npx razoragent test or the "Run Tests" button in the dashboard navbar!)

🔌 6. Connecting Your Real Store (Shopify / WooCommerce / Custom)

RazorAgent uses a pluggable CatalogProvider contract. It ships with:

1. DemoCatalogProvider: Zero-configuration reference catalog with 32+ products across 7 categories.

2. ShopifyCatalogProvider: Real production GraphQL adapter for Shopify Storefront API (/api/2024-01/graphql.json).

3. WooCommerceCatalogProvider: Real REST adapter for WooCommerce (/wp-json/wc/v3/products).

CLI Store Onboarding Wizard

Connect your real merchant store in seconds via the interactive CLI wizard:

npx razoragent connect

The wizard guides you through selecting your platform (Shopify or WooCommerce), entering your storefront access credentials, performing an automated live SKU discovery verification, and saving your configuration into .env.local.

Check your active catalog source and status anytime:

npx razoragent status

Web Dashboard Onboarding

Visit the live onboarding portal at https://razoragent.resence.in/connect or click "Connect Store" in the top navigation bar to link your Shopify or WooCommerce store with instant live product previews.

Writing a Custom Merchant Adapter (~15 lines)

Any custom database, ERP, or headless backend can plug into RazorAgent by implementing the 3-method CatalogProvider contract:

import { CatalogProvider, CatalogSearchFilters, ProductItem, MCPEngine } from 'razoragent';

export class CustomPostgresCatalogProvider implements CatalogProvider {
  async searchProducts(query: string, filters?: CatalogSearchFilters): Promise<ProductItem[]> {
    // 1. Query your database with query & filters
    const rows = await db.query('SELECT * FROM products WHERE name ILIKE $1', [`%${query}%`]);
    return rows.map((r) => ({
      id: r.sku,
      name: r.title,
      category: r.category,
      price: r.price_inr,
      rating: 4.8,
      reviewCount: 120,
      stock: r.stock_quantity,
      description: r.description,
      specs: { brand: r.brand },
      tags: r.tags,
      image: r.image_url,
    }));
  }

  async getProductDetails(productId: string): Promise<ProductItem | null> {
    const r = await db.queryOne('SELECT * FROM products WHERE sku = $1', [productId]);
    return r ? { id: r.sku, name: r.title, category: r.category, price: r.price_inr, rating: 4.8, reviewCount: 120, stock: r.stock_quantity, description: r.description, specs: {}, tags: [], image: r.image_url } : null;
  }

  getProviderName(): string {
    return 'Custom Postgres Enterprise Catalog';
  }
}

// Register with RazorAgent MCP Engine
const engine = new MCPEngine(new CustomPostgresCatalogProvider());

🚀 7. Quick Start & Command Reference

Option A: Try Instantly with Demo Data (Zero Config)

# Simulate an autonomous AI agent purchasing running shoes within ₹2,000 spend cap
npx razoragent run --intent "Buy running shoes under 2000"

Option B: Connect Your Real Merchant Store

# 1. Run the interactive merchant onboarding wizard
npx razoragent connect

# 2. Check active catalog status
npx razoragent status

# 3. Simulate an AI buyer purchasing from your live catalog
npx razoragent run --intent "Find mechanical keyboard with coupon AGENT500"

CLI Command Reference

🧪 8. Automated Verification Suite (6/6 Passing)

RazorAgent includes automated system verification suites accessible via npm run test:razoragent or the "Run Tests" button on the web UI:

Running RazorAgent Automated Test Suite...

Summary: 6/6 passed (100% Assertion Rate)

[PASSED] TEST_01_HAPPY_PATH: Happy Path Autonomous Agent Checkout (93ms)
[PASSED] TEST_02_BUDGET_GUARDRAIL: Deterministic Budget Cap Enforcement (2ms)
[PASSED] TEST_03_QUANTITY_GUARDRAIL: SKU Hoarding & Quantity Bounds Enforcement (1ms)
[PASSED] TEST_04_2AM_RACE_CONDITION: Concurrency & Duplicate Retry Suppression (0ms)
[PASSED] TEST_05_HMAC_WEBHOOK_VERIFY: HMAC-SHA256 Cryptographic Webhook & Settlement Verifier (1ms)
[PASSED] TEST_06_PLUGGABLE_CATALOG: Pluggable CatalogProvider Contract & Resolution (1ms)

🏬 9. Next.js / Express Gateway Deployment

// Example: Exposing RazorAgent MCP tools on any Next.js / Express merchant backend
import { handleMCPRequest } from 'razoragent';

export async function POST(req: Request) {
  const jsonRpcBody = await req.json();
  const response = await handleMCPRequest(jsonRpcBody, {
    maxSpendLimitINR: 5000,
    allowedCategories: ['electronics', 'apparel', 'specialty-coffee'],
    maxQuantityPerItem: 3
  });
  return Response.json(response);
}

🗺️ 10. Scope and Roadmap

v1.x is scoped as an isolated gateway for a single merchant's catalog and Razorpay account.

The following capabilities are out of scope for the current release and planned for future iterations:

• Multi-tenant deployments hosting multiple merchant catalogs on a single instance

• Cross-merchant product discovery, federated search, and catalog aggregation

• Web dashboard user authentication and role-based access control (configuration in v1.x is managed through environment variables)

📄 License

MIT License © 2026 Resence. Open source.