Add Spraay provider — batch crypto payments, payroll, invoices via x402

[plagtech]

Adds Spraay as a provider for multi-chain batch crypto payments.

57 paid + 5 free endpoints via x402 gateway
Batch payments to up to 200 recipients (60-80% gas savings)
Payroll, invoices, swaps, price feeds, XMTP messaging, IPFS
11 chains: Base, Ethereum, Arbitrum, Polygon, BNB, Avalanche, Solana, Unichain, Plasma, BOB, Bittensor
Complementary to Bankr: batch distribution vs individual trading

Gateway: https://gateway.spraay.app/
ClawHub: https://clawhub.ai/plagtech/spraay-payments

[plagtech]

Update — March 2026
Spraay x402 Gateway has expanded significantly since this PR was opened:

62 paid endpoints across 8 categories (up from 6):

AI Chat (200+ models via OpenRouter)
Batch Payments (200 recipients/tx)
DeFi (Uniswap V3 swaps)
Price Oracle / Gas / FX
Cross-chain Bridge (11 chains)
Payroll, Invoicing, Escrow
Wallet Analytics, AI Inference
NEW: GPU/Compute — image gen, video, LLMs, audio via Replicate ($0.05/call)
NEW: Search/RAG — web search, content extraction, Q&A via Tavily ($0.01-$0.02/call)
Communication (email, SMS, webhooks, XMTP)
Infrastructure (RPC, IPFS, cron, logging)
Identity (KYC, auth/SSO)
Compliance (audit trail, tax)
63-tool MCP server on Smithery: @plagtech/spraay-x402-mcp
Developer docs: https://docs.spraay.app/
Gateway: https://gateway.spraay.app/

All endpoints are x402-native — agents pay USDC per request on Base. No API keys, no accounts.