Coal - Payments for AI agents vs Teardrop

# Coal Coal gives AI agents a real checkout. Discover merchants through the decentralized 0G Storage catalog, pay autonomously in USDC on Base via x402 (Coinbase) or OKX APP (v2 envelope), and download purchased products — all without a human in the loop. Receipts are anchored on 0G Chain, allowi

Streaming AI agent API built on LangGraph. Implements AG-UI, A2A, MCP, and x402 simultaneously. Agents discover it via A2A, call it over SSE, use its tools via MCP, and pay per request in USDC on Base. Per-org MCP federation, pgvector memory, 16 built-in Web3 tools, and dual billing (Stripe + x402).

MCP Servers

MCP Servers

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