UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash Filter, 0% Crypto Checkout & Tax Engine
REMOTE · UNFEE.XYZ · 2 COMPONENTS
Flat 1-credit Base/ETH/XRPL RPC (eth_getLogs=1 credit), x402 wash filter, 0% checkout & tax CSV.
Available components
Last scanned (20 hours ago)
Scores higher than 8% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Crypto and Web3
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint returned HTTP 503. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 30 Oct 26 −35
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: 0.10 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Transport: pass → fail ▼ security
- Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. security
- Capabilities: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 28 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “unfee_generate_tax_report” rewrote its description, which is the text the model reads security
- 27 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 26 Oct 26 57
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Nov 2026 · Probed https://unfee.xyz/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=unfee.xyz | CN=WE1,O=Google Trust Services,C=US | 24 Oct 2026 | 22 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | a774e464240951890e429d33084e1221 |
| SANs: unfee.xyz, api.unfee.xyz, *.api.unfee.xyz | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of unfee.xyz. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| xyz. | present | 3599, 18130 | 8, 8 | Verified |
| unfee.xyz. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 503 |
| Header | Value |
|---|---|
| content-security-policy | default-src 'none'; frame-ancestors 'none'; base-uri 'none'; form-action 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://unfee.xyz/mcp | HTTP error | 503 | |
| http (plaintext) | http://unfee.xyz/mcp | HTTPS enforced | 301 | https://unfee.xyz/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
base_rpc_request ~123
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).
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | – | Optional UnFee API key (auto-provisioned if omitted) |
| method | string | – | Base Mainnet JSON-RPC method name |
| params | array | – | JSON-RPC method parameters array |
No output schema declared.
No examples provided.
compare_payment_fees ~99
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).
| Name | Type | Req | Description |
|---|---|---|---|
| amountUsd | number | yes | Average transaction size in USD |
| monthlyTxCount | number | – | Monthly transaction count |
| tier | string | – | – |
No output schema declared.
No examples provided.
create_payment_link ~149
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).
| Name | Type | Req | Description |
|---|---|---|---|
| amount | string | – | Payment amount (e.g. '25.00') |
| currency | string | – | Settlement currency on Base or XRPL |
| memo | string | – | Optional item label or invoice memo |
| to | string | yes | Recipient wallet address (Base 0x..., XRPL r..., or ENS vitalik.eth) |
No output schema declared.
No examples provided.
eth_getLogs_flat_rate ~149
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).
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Optional contract address filter |
| apiKey | string | – | Optional UnFee API key |
| chain | string | – | Target EVM chain (base or ethereum) |
| fromBlock | string | – | Start block tag or hex block number |
| toBlock | string | – | End block tag or hex block number |
| topics | array | – | Optional indexed event topics filter array |
No output schema declared.
No examples provided.
ethereum_rpc_request ~101
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).
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | – | Optional UnFee API key |
| method | string | – | Ethereum Mainnet JSON-RPC method name |
| params | array | – | JSON-RPC method parameters array |
No output schema declared.
No examples provided.
get_instant_free_rpc_key ~73
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).
| Name | Type | Req | Description |
|---|---|---|---|
| label | string | – | Optional key label for telemetry |
| tier | string | – | – |
No output schema declared.
No examples provided.
get_live_arb_opportunities ~88
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.
| Name | Type | Req | Description |
|---|---|---|---|
| simulateSpreadBps | number | – | Optional simulated spread in basis points (e.g. 45) |
No output schema declared.
No examples provided.
unfee_address_guard ~128
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.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | Blockchain network |
| from | string | – | Sender wallet address |
| recentContacts | array | – | Optional list of trusted/recent counterparty addresses to guard against lookalike spoofing |
| to | string | – | Destination wallet address to verify before signing |
No output schema declared.
No examples provided.
unfee_check_seller_reputation ~73
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).
| Name | Type | Req | Description |
|---|---|---|---|
| seller | string | – | Seller Base (0x...) or XRPL (r...) wallet address |
No output schema declared.
No examples provided.
unfee_generate_tax_report ~309
Generate an instant read-only IRS Form 8949, Schedule D summary, HIFO/FIFO/LIFO cost-basis calculation, non-taxable self-transfer matching, instant email CSV delivery (POST /api/v1/tax/email-export & POST /api/v1/tax/email-report), and TurboTax / H&R Block / TaxAct / FreeTaxUSA / QuickBooks / 1099-DA CSV export across 10 chains (Base, Ethereum, XRP Ledger, Solana, Bitcoin, Arbitrum One, Polygon PoS, Optimism, BNB Smart Chain (BSC), Avalanche C-Chain) ($0 Free preview forever, $10 Single-Year Tax Report Pass tax_report_10_onetime, $19 All-Years + DeFi & 1099-DA CPA Pack tax_all_years_19_onetime, or $20/mo 24/7 Live Wallet, DeFi & Tax Alerts Pro wallet_alerts_20_monthly).
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | Preferred CSV export format (default irs8949) |
| method | string | – | Cost-basis accounting method (default HIFO) |
| taxYear | string | – | Tax year filter (e.g. 2026, 2025, 2024, or all) |
| wallet | string | – | Primary Base (0x...) or XRPL (r...) wallet address |
| wallets | array | – | Optional list of connected Base and XRPL wallets for self-transfer matching |
No output schema declared.
No examples provided.
unfee_pay_with_delivery_proof ~171
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.
| Name | Type | Req | Description |
|---|---|---|---|
| amountUsd | string | – | Payment amount in USD/USDC (e.g. 0.01) |
| buyer | string | – | Buyer wallet address |
| currency | string | – | Settlement currency (default USDC) |
| expectedSha256 | string | – | Optional expected SHA-256 hex digest of payload |
| seller | string | – | Seller wallet address |
| upstreamBody | string | – | Response payload returned by upstream seller API |
| upstreamStatus | number | – | HTTP status code returned by upstream seller API |
No output schema declared.
No examples provided.
unfee_trace_x402_wash_filter ~168
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 leaderboard.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Base/ETH (0x...) or XRPL (r...) wallet or x402 facilitator address to trace |
| chain | string | – | Target blockchain network (base, eth, or xrpl) |
| transfers | array | – | Optional custom batch of transfers ({ from, to, amountUsd, timestamp, hash }) to classify with the 4 heuristics |
No output schema declared.
No examples provided.
verify_transaction ~77
Verify an on-chain Base Mainnet or XRPL transaction hash and return settlement confirmation details.
| Name | Type | Req | Description |
|---|---|---|---|
| expectedAmount | string | – | – |
| expectedCurrency | string | – | – |
| expectedRecipient | string | – | – |
| network | string | – | – |
| txHash | string | yes | 0x... Base transaction hash or XRPL tx hash |
No output schema declared.
No examples provided.
xrpl_rpc_request ~100
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.
| Name | Type | Req | Description |
|---|---|---|---|
| apiKey | string | – | Optional UnFee API key |
| method | string | – | XRPL Mainnet JSON-RPC method name |
| params | array | – | XRPL JSON-RPC parameters array |
No output schema declared.
No examples provided.
How do I install the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server?
UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… is a hosted endpoint at https://unfee.xyz/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · unfee.xyz
claude mcp add --transport http xyz-unfee-mcp 'https://unfee.xyz/mcp'
What is the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server?
UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… is an MCP server listed in the public MCP registry as xyz.unfee/mcp. Flat 1-credit Base/ETH/XRPL RPC (eth_getLogs=1 credit), x402 wash filter, 0% checkout & tax CSV. This page covers its hosted endpoint (https://unfee.xyz/mcp).
Is the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server safe to use?
UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… scores 23 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server expose?
UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… exposes 14 tools: create_payment_link, get_instant_free_rpc_key, compare_payment_fees, get_live_arb_opportunities, verify_transaction, and 9 more. Their descriptions and schemas cost roughly 1,808 tokens of context every time the server is loaded.
Does the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server require authentication?
Its publisher declares no required credentials for UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash…. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… MCP server still maintained?
UnFee — 1-Credit Base/ETH/XRPL RPC, x402 Trace & Wash… is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.