openfang-rail MCP Server

by 89rat Your server? Claim it

answering

openfang-rail is answering right now. Last checked 6 min ago. It exposes 28 tools.

Deterministic IBAN/LEI/VAT/SWIFT/rental-fraud checks via MCP; x402 USDC per call, signed receipts.

Uptime history 11 hours of history

11 hours agonow

100.0%

Uptime 24h

40 of 40 checks

Tools

read from the server

117 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check openfang-rail every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add openfang-rail --transport http https://rail.akrivis.in/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "openfang-rail": {
      "url": "https://rail.akrivis.in/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.openfang-rail]
url = "https://rail.akrivis.in/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "openfang-rail": {
      "url": "https://rail.akrivis.in/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "openfang-rail": {
      "url": "https://rail.akrivis.in/mcp"
    }
  }
}

Available tools 28

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

rental

rental_listing_risk

Explainable rental-fraud risk score over listing red-flag signals (deterministic rule engine).

rental_verdict

One combined, signed rental due-diligence verdict: deposit + landlord entity (LEI/company) + listing risk.

aba

aba_routing_check

Validate a US ABA routing number by its (3,7,1)-weight mod-10 checksum.

abn

abn_check

Validate an Australian Business Number by its mod-89 checksum (11 digits).

activity

tx_activity

On-chain activity snapshot for an address: total outbound transaction count (nonce), whether the address is a contract (eth_getCode), and a first-funded heuristic (nonce > 0). Preflighted so you never pay during an RPC outage.

balance

balance_check

On-chain balance snapshot: native ETH balance plus one ERC-20 token balance (defaults to USDC on Base), with raw units and decimals provenance. Preflighted so you never pay during an RPC outage.

batch

batch_validate

Run up to 50 identifier checks (IBAN / LEI / VAT / UK company / SWIFT / ABA / EIN / IFSC / ABN / Luhn / ISBN / E.164 / SEDOL / ISIN / EAN-13 / GSTIN / context-distill) in ONE paid call: one voucher, one settlement, one signed XDR-1 receipt covering the whole batch. Flat price regardless of count — at 50 items, 10x cheaper per check than single calls.

block

block_info

Latest (or specified) Base block header: number, timestamp, transaction count, base fee. Preflighted so you never pay during an RPC outage.

company

company_number_format

Validate UK Companies House number format (not existence).

context

context_distill

Deterministic text digest: word count, top-5 most frequent meaningful words (stop words excluded), first sentence, and a keccak-256 content hash. Pure function — no external calls, no ML.

crypto

crypto_ticker

Current spot price (USD) for a symbol via the public CoinGecko API; common tickers (btc, eth, …) are mapped to CoinGecko ids automatically. Cached 60s server-side; preflighted so you never pay during an API outage.

e164

e164_check

Validate a phone number's E.164 structure (+CC, 8-15 digits, no leading zero).

ean13

ean13_check

Validate an EAN-13 barcode by its mod-10 checksum (odd positions x1, even positions x3).

ein

ein_format_check

Validate US Employer Identification Number FORMAT (NN-NNNNNNN). No public EIN checksum exists.

erc20

erc20_balance

Raw + formatted ERC-20 balanceOf for an address at any token contract (decimals read on-chain when available; common-list/18 fallback is labeled). Preflighted so you never pay during an RPC outage.

gstin

gstin_check

Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.

iban

iban_check

Validate an IBAN by ISO 13616 structure and MOD-97-10 checksum (offline, no bank lookup).

ifsc

ifsc_check

Validate an Indian IFSC by RBI structure (BBBB0NNNNNN; 5th character always 0).

isbn

isbn_check

Validate an ISBN-10 (mod-11) or ISBN-13 (1,3-weight mod-10) checksum.

isin

isin_check

Validate an ISIN (ISO 6166) by structure and Luhn mod-10 check digit over the A=10…Z=35 converted string.

lei

lei_check

Validate a Legal Entity Identifier (ISO 17442 + ISO 7064 MOD-97-10 check digits).

luhn

luhn_check

Validate any 12-19 digit number by the Luhn mod-10 algorithm (card-style checksums). Never submit real card numbers.

rent

rent_deposit_guard

Rental deposit safety: IBAN checksum + property/deposit country alignment + pre-viewing flag.

sedol

sedol_check

Validate a UK/Ireland security identifier by its (1,3,1,7,3,9)-weight mod-10 checksum.

settlement

settlement_history_check

On-chain counterparty check: USDC transfers SENT and RECEIVED by an address over the last ~48h of Base blocks (counts, volumes, sample tx hashes). Preflighted so you never pay during an RPC outage.

swift

swift_bic_check

Validate a SWIFT/BIC code by ISO 9362 structure (bank code, ISO country, location, optional branch).

vat

vat_mod97_check

Structural VAT check (BE mod-97 family).

vendor

vendor_onboarding_pack

Screen a vendor's identifiers in ONE signed call: IBAN + LEI + VAT + UK company number — each checksummed, one verdict, one receipt. Half the price of four single checks.

Endpoints

URL	Transport	State	Latency	Checked
https://rail.akrivis.in/mcp	streamable-http	answering	146 ms	6 min ago

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openfang-rail — questions

Answers built from our own checks of this server.

What can openfang-rail do?

It exposes 28 tools, read directly from the server on our last check. Among them: aba_routing_check, abn_check, balance_check, batch_validate, block_info, company_number_format and 22 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is openfang-rail working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 40 of 40 checks got a reply (100.0%), average response time 117 ms. The bar chart above shows every period we have measured.

How do I connect openfang-rail?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does openfang-rail need an API key?

No. openfang-rail completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 28 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is openfang-rail?

It answers our handshake in 117 ms on average, which is faster than 88% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.