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UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash Filter, 0% Crypto Checkout & Tax Engine

xyz.unfee/mcp · v1.5.0

Measured by MCP Station

Description written by the publisher, not verified

Flat 1-credit Base/ETH/XRPL RPC (eth_getLogs=1 credit), x402 wash filter, 0% checkout & tax CSV.

Connect

claude mcp add --transport http mcp https://unfee.xyz/mcp

{
  "mcpServers": {
    "mcp": {
      "url": "https://unfee.xyz/mcp"
    }
  }
}

claude mcp add --transport http mcp https://unfee-gateway.unfee.workers.dev/mcp

{
  "mcpServers": {
    "mcp": {
      "url": "https://unfee-gateway.unfee.workers.dev/mcp"
    }
  }
}

Tools as reported by the server

• create_payment_link
  Create a zero-middleman-fee UnFee payment short link (/to/<wallet>/<amount>/<currency>), hosted checkout URL, dynamic OpenGraph social preview card, scannable SVG QR code, and 1-line HTML embed snippet for Base (USDC, ETH, cbBTC, EURC) or XRPL (XRP, RLUSD).
• get_instant_free_rpc_key
  Mint a live UnFee API key with Free Tier credits (flat 1 request = 1 credit across eth_call, eth_getLogs, and XRPL JSON-RPC; 0 compute-unit multipliers).
• compare_payment_fees
  Compare legacy card processor fees (2.9% + $0.30) against UnFee Starter ($0/mo, 0.005% = 5¢ per $1,000 micro-fee) and UnFee Indie ($5/mo, True 0% protocol fee).
• get_live_arb_opportunities
  Scan all 9 live Base Mainnet 3-hop triangular flash-loan arbitrage loops (cbXRP, AERO, EURC, cbBTC, VIRTUAL, BRETT, DEGEN, MORPHO, WELL) and XRPL CLOB spreads.
• verify_transaction
  Verify an on-chain Base Mainnet or XRPL transaction hash and return settlement confirmation details.
• unfee_check_seller_reputation
  Check a seller or x402 API provider on-chain/gateway Proof-of-Delivery reputation (verified HTTP-200 deliveries, dropped failed calls, delivery rate %, and buyer USD saved on failed calls).
• unfee_pay_with_delivery_proof
  Execute an atomic HTTP-200 Proof-of-Delivery x402 settlement check: settles payment ONLY if the seller returns HTTP 200..299 with a valid non-empty payload and matching SHA-256 digest; drops authorization with $0.00 buyer charge if upstream fails.
• unfee_generate_tax_report
  Generate an instant IRS Form 8949, Schedule D summary, FIFO/HIFO/LIFO cost-basis calculation, non-taxable self-transfer reconciliation, and TurboTax / QuickBooks CSV export for any Base (0x...) or XRPL (r...) wallet at $0.01 via x402 (or $0 on $5/mo Indie Tier), undercutting Koinly and CoinTracker b
• base_rpc_request
  Execute any Base Mainnet (Chain ID 8453) JSON-RPC method (eth_call, eth_getLogs, eth_getBalance, eth_estimateGas, eth_sendRawTransaction, eth_blockNumber) at a flat 1 Request = 1 Credit (250,000 free calls/month, zero compute-unit multipliers).
• eth_getLogs_flat_rate
  Query Base Mainnet (8453) or Ethereum Mainnet (1) eth_getLogs event logs at 1 flat credit per request (saving 75x–500x vs. legacy compute-unit RPC gateways that charge 75–500 CUs per eth_getLogs call).
• xrpl_rpc_request
  Execute any native XRP Ledger (XRPL Mainnet) JSON-RPC method (account_info, book_offers, server_info, tx, submit, account_lines) at 1 flat credit per request with zero compute-unit markups.
• ethereum_rpc_request
  Execute any Ethereum Mainnet (Chain ID 1) JSON-RPC method (eth_call, eth_getLogs, eth_getBalance, eth_blockNumber, eth_estimateGas) at 1 flat credit per request (250,000 free calls/month).
• unfee_trace_x402_wash_filter
  Run UnFee Trace (https://unfee.xyz/trace) on any Base (8453), Ethereum (1), or XRPL wallet or x402 facilitator to separate verified organic x402 end-user spend from circular agent-to-agent 24h ping-pong wash traffic, self-loops, and sub-cent dust heartbeats. Also returns an Arkham-style counterparty
• unfee_address_guard
  Pre-send address-poisoning & vanity prefix/suffix lookalike spoofing guard for Base (8453), Ethereum (1), and XRPL wallets. Detects attackers matching the first 3-6 and last 3-6 hex characters of a trusted counterparty while middle bytes differ.

Website · JSON · Text for agents · Registry updated 2026-10-26