Loyal Spark — Onchain Loyalty Protocol

A Web3-powered loyalty platform built on Base Mainnet: merchants and AI agents create onchain loyalty programs (B20 by default), mint points, manage rewards/vouchers, and automate the loop via REST, MCP, and pay-per-call gateways (x402 / MPP).

Overview

Loyal Spark revolutionizes traditional loyalty programs by bringing them onchain. It operates as a dual-mode platform: humans interact via the web UI with flexible authentication (email, phone, social login, or wallet), while AI agents interact via REST API or MCP Server — sharing the same database, smart contracts, and tokens.

Wallet Abstraction: Users and merchants sign in via Privy — email, phone/SMS, Google, or external wallets (MetaMask, WalletConnect, Coinbase Wallet). Privy automatically creates an embedded wallet on Base — no crypto experience needed. Farcaster miniapp and SIWE for crypto-native users are also fully supported. Merchants can send tokens to customers by email or phone number (resolved to wallet address automatically).

┌─────────────────────────────────────────────────┐
│              Loyal Spark Platform                │
│                                                  │
│  ┌──────────┐    ┌──────────┐    ┌──────────┐   │
│  │  Web UI   │    │ REST API │    │MCP Server│   │
│  │ (humans)  │    │ (agents) │    │ (agents) │   │
│  └─────┬─────┘    └─────┬────┘    └─────┬────┘   │
│        │                │               │        │
│        ▼                ▼               ▼        │
│  ┌──────────────────────────────────────────┐    │
│  │        Backend (Edge Functions)           │    │
│  │    Auth · RLS · DB · Realtime             │    │
│  └─────────────────┬────────────────────────┘    │
│                    │                             │
│        ┌───────────┴───────────┐                 │
│        ▼                       ▼                 │
│  ┌──────────┐          ┌──────────────┐          │
│  │ Base L2  │          │ CDP Server   │          │
│  │ Contracts│          │ Wallet (MPC) │          │
│  └──────────┘          └──────────────┘          │
└─────────────────────────────────────────────────┘

Features

For Merchants (Web UI)

• Deploy Loyalty Tokens: Create custom loyalty tokens on Base (B20 default; legacy ERC-20 via API)
• Mint Tokens: Issue loyalty points to customers via wallet addresses or QR scan
• Create Rewards: Design voucher rewards with token costs
• CRM & Analytics: Customer profiles, RFM segmentation, tier management
• Marketing Automation: Automated campaigns, personalized offers
• Referral Programs: Generate referral codes with bonuses
• Voucher Management: Track redemptions with QR code verification
• AI Agent Management: Register agents, manage API keys, monitor activity
• Team & branches: Invite cashiers/managers by wallet or one-time invite code (redeem on Merchant → Team); requires Postgres RPC accept_merchant_invite — see docs/development/PORTALS_AND_TEAM.md

For Customers (Web UI)

• Multi-Token Dashboard: View all loyalty tokens from different merchants
• Browse Rewards: Explore available vouchers across all programs
• Redeem Vouchers: Burn tokens to claim exclusive rewards with QR codes
• Tier System: Bronze → Silver → Gold → Platinum with increasing perks
• Frozen modules (not product promises): marketplace/ (DEX) and roundup/ (DeFi) remain in the tree but are explicitly frozen — no active development

For AI Agents (REST API + MCP)

• Full CRUD via API: Create programs, mint tokens, manage rewards, view analytics
• MCP Server: Connect Claude, GPT, Cursor, or any MCP-compatible LLM directly
• Server Wallets: Coinbase CDP MPC wallets for autonomous onchain operations
• Scoped Permissions: Granular access control (read, mint, manage_rewards, trade)
• Activity Logging: Full audit trail of all agent operations
• Tiered Pricing (agents): Free (200 calls/mo, 1 agent, 1,000 tokens minted/mo, 1.25% mint fee) → Pro ($49/mo, 0.5%) → Enterprise ($129/mo, 0.25%) — subscriptions in USDC, mint fee in loyalty tokens (off-chain obligation, not enforced by the token contract); see docs/business/MONETIZATION_AND_PRICING.md
• Skills Documentation: 16 structured step-by-step guides (00–15 under /.well-known/skills/) for agent onboarding, B20 semantics, and payment rails

Technology Stack

Smart Contract Architecture

New loyalty programs (default) deploy via Base’s native B20 factory precompile — one transaction, active immediately after register-program. Legacy programs use the Loyal Spark ERC-20 factory below (token_standard: "erc20" in API only). Full flows: docs/development/LOYALTY_PROGRAM_CONTRACTS.md.

Network: Base Mainnet (Chain ID: 8453)

Program creation (summary)

Token operations (both standards)

B20 tokens are ERC-20–compatible for balances, transfers, mint, and escrow:

• mint(address to, uint256 amount) — issue points (role-gated)
• transfer / transferFrom — move tokens between wallets
• balanceOf(address) — query balance

AI Agent Integration

Quick Start

Merchant dashboard:

1. Go to loyalspark.online/merchant and sign in (email, phone, Google, or wallet via Privy)
2. Open AI Agents tab → Register an agent → Copy your API key (lsk_...)
3. Use the key in x-api-key header for REST or MCP calls

Without the web app (autonomous agents): free lsk_ via wallet signature — Edge Function agent-register-siwe + nonce from siwe-nonce. See docs/agents/AUTONOMOUS_AGENT_REGISTRATION.md and docs/agents/QUICKSTART.md.

Optional repo scripts (development / agent onboarding)

These directories are not imported by the web app; they are optional helpers for developers and agents reproducing flows locally. Secrets stay in environment variables only.

Schemas for paid MCP: merchant mcp-tools/<name> — mcp-bazaar-tools.ts; recipient recipient-mcp-tools/<name> — recipient-mcp-bazaar-tools.ts. HTTP 402 accepts + Coinbase x402 Bazaar discovery metadata for all paid routes are built in x402-bazaar-accept.ts. These scripts are not linked from the marketing homepage; primary onboarding remains /for-agents and the merchant portal.

REST API

# List loyalty programs
curl -H "x-api-key: lsk_YOUR_KEY" \
  https://api.loyalspark.online/agent-api/programs

# Mint tokens — returns a fee-first calls[] bundle (1.25% fee on Free plan,
# minted in your own loyalty tokens); settle it via POST /agent-api/mint/confirm
curl -X POST \
  -H "x-api-key: lsk_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"token_address":"0x...","recipient_address":"0x...","amount":100}' \
  https://api.loyalspark.online/agent-api/mint

API Endpoints (28 authenticated + 1 public)

All routes below require x-api-key: lsk_... except GET /vouchers/status (public). Canonical catalogue: public/.well-known/agent.json (must match supabase/functions/agent-api/index.ts).