Overview
Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. On the paid retry send the payment together with header x-api-key: rwk_... or Authorization: Bearer rwk_.... A payment without a live key is not charged. Holder key, not a merchant key. There is no paid registration. POST https://api.loyalspark.online/siwe-nonce, sign a SIWE message (Chain ID 8453) with the holder wallet and no special phrase, then POST {message, signature, name} to https://api.loyalspark.online/recipient-api/register. The rwk_ key sees only that wallet: balances, redeem, vouchers, transfer calldata, P2P, gift claims. Guide: https://loyalspark.online/.well-known/skills/00-getting-started.md The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/transactions
Provider
loyalspark
Indexed
2026-07-12 04:14:53
Health
Status
degraded
Latency (p50)
216ms
Uptime (30d)
100.0%
Reliability Score
85/100
Last Checked
2026-10-23 12:51:07
Last Healthy
Never
Consecutive Failures
2
Input Schema
{
"bodyType": "json",
"description": "HTTP POST https://api.loyalspark.online/x402-gateway/recipient-api/accept-offer?method=POST — x402-gateway /recipient-api/accept-offer. On the paid retry send the payment together with header x-api-key: rwk_... or Authorization: Bearer rwk_.... A payment without a live key is not charged. Holder key, not a merchant key. There is no paid registration. POST https://api.loyalspark.online/siwe-nonce, sign a SIWE message (Chain ID 8453) with the holder wallet and no special phrase, then POST {message, signature, name} to https://api.loyalspark.online/recipient-api/register. The rwk_ key sees only that wallet: balances, redeem, vouchers, transfer calldata, P2P, gift claims. Guide: https://loyalspark.online/.well-known/skills/00-getting-started.md",
"inputSchema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true,
"description": "Two-phase: call without transaction_hash to reserve the offer (status active -> accepted) and receive approve + fillOffer escrow calldata; call again with transaction_hash of the confirmed fillOffer tx to finalize (accepted -> completed).",
"properties": {
"offer_id": {
"format": "uuid",
"type": "string"
},
"onchain_offer_id": {
"description": "On-chain escrow offer id (phase 1, when known).",
"type": "number"
},
"transaction_hash": {
"description": "Phase 2: hash of the confirmed escrow fillOffer transaction on Base.",
"pattern": "^0x[a-fA-F0-9]{64}$",
"type": "string"
}
},
"required": [
"offer_id"
],
"type": "object"
},
"method": "POST",
"type": "http"
}
Output Schema
{
"description": "JSON from Loyal Spark agent-api or recipient-api. See OpenAPI for response shape.",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object"
},
"type": "json"
}