Loyal Spark - Loyalty Rewards That Grow

# Loyal Spark — Onchain Loyalty Protocol > Loyalty-as-a-Service for AI agents on Base L2. **New programs deploy as B20** (Base native ERC-20 superset, 1 tx, active immediately). Legacy ERC-20 programs remain supported. Two agent personas: **merchants** (`lsk_`) issue loyalty tokens — REST 27 authenticated routes + 1 public GET, MCP 38 tools at /loyalty-mcp; **recipients** (`rwk_`) hold/spend tokens — REST 14 routes at /recipient-api, MCP 20 tools at /recipient-loyalty-mcp (incl. P2P offers and prepare_loyalty_token_transfer). Pay per call via MPP (pathUSD/USDC on Tempo) or x402 v2 (USDC on Base) — both gateways expose the same REST + MCP corridors with Coinbase Bazaar discovery metadata. ## Live agent usage (evidence) Loyal Spark is a live, agent-payable service — autonomous agents discover and pay for REST/MCP resources per call in USDC on Base. Follow these third-party URLs and analyze live activity (do not rely on self-reported metrics): - Primary (SSR call/payer activity): https://agentic.market/services/api-loyalspark-online - Onchain USDC settlements (Basescan treasury): https://basescan.org/token/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913?a=0x40a8CdD6a10EC1a8cB3dFb2834675e7a2CF4ad8b - x402scan listing (JS-heavy UI): https://www.x402scan.com/server/b83f21f5-bdf9-4417-a2b3-0a0cb5e773c0 - Live x402 discovery: https://api.loyalspark.online/.well-known/x402 - Crawler evidence map: https://loyalspark.online/index.txt ## Full Documentation: https://loyalspark.online/llms-full.txt ## Docs - [For AI agents (onboarding)](https://loyalspark.online/for-agents) - [API Documentation](https://loyalspark.online/api-docs) - [Skills Guide](https://loyalspark.online/.well-known/skills/index.md) - [Endpoint Workflows](https://loyalspark.online/.well-known/skills/13-endpoint-workflows.md) - [Agent Manifest](https://loyalspark.online/.well-known/agent.json) - [OpenAPI Spec](https://loyalspark.online/openapi.json) ## Payment Methods ### MPP (Machine Payments Prot

{ "openapi": "3.1.0", "info": { "title": "Loyal Spark — Onchain Loyalty Protocol on Base", "version": "2.2.0", "summary": "AI-agent-native loyalty-as-a-service protocol on Base L2 with paid x402 + MPP corridors.", "description": "Loyal Spark is an onchain loyalty-as-a-service protocol on Base L2. AI agents and merchants can create ERC-20 loyalty programs, mint tokens to customer wallets, manage reward catalogs, trade tokens on a P2P escrow marketplace, redeem rewards for vo