n8n-nodes-maxialchain

n8n community node for MaxialChain webhook validation and proof tools.

What it does

• Validate Webhook Payload (free) — structural check, field detection, SHA256 preview
• Create Webhook Proof ($0.05 USDC) — timestamp + sha256 + deduplication proof
• Create Timestamp Proof ($0.02 USDC) — timestamped sha256 of any text
• Hash Payload ($0.01 USDC) — sha256/sha512/md5
• Check API Health ($0.05 USDC) — timestamped HTTP health check
• Verify Signature ($0.05 USDC) — EIP-191 signature recovery
• Check x402 Endpoint ($0.05 USDC) — x402 protocol compliance check

Payment

Paid operations require an X-PAYMENT header (x402 protocol).
Use x402-fetch or build the header manually.
See: https://publishers-colon-rid-surrey.trycloudflare.com/buyer-help

Network: Base mainnet (eip155:8453) | Token: USDC | No ETH from buyer

Disclaimer

Technical utility tools only. No trading advice. No financial signals. No guarantees.

Install

npm install n8n-nodes-maxialchain

Configuration

1. Add credentials: MaxialChain API → Base URL → (your deployment URL or default)
2. No API key needed for free operations
3. For paid operations, provide X-PAYMENT header

Usage example (free validation)

1. Add MaxialChain node after a Webhook trigger
2. Operation: Validate Webhook Payload (Free)
3. Payload: ={{ JSON.stringify($json) }}
4. Run workflow — output shows validation result

Links

• Agent guide: BASE_URL/agent-invite
• OpenAPI: BASE_URL/openapi.json
• MCP: BASE_URL/mcp.json