openfang-rail
Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts.
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Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts.
Server tool list (63)
Raw names from tools/list. Only developers need these.
| receipt_verify | Verifies a signed XDR-1 receipt from ANY x402 service: recomputes the canonical digest and recovers the signer, then compares it to the declared signer. Free forever — no account, no quota, no storage (stateless). A valid receipt proves the signer signed that tool call at that timestamp; it does NOT prove funds moved or any business claim. |
| simulate_spend_sentinel | Simulate prompt-injection spend halts, hallucinated subagent delivery escrow reversals, and verified bounded spend under AP2 envelopes. |
| create_ap2_pilot | Provision a pre-cleared AP2 Merchant Pilot invoice ($49.00 USDC) with 50k gasless Base L2 calls and turnkey <code402-widget> setup. |
| iban_check | Deterministically validates international bank accounts (ISO 13616) using MOD-97-10 checksums: structure and checksum only. Catches mistyped or malformed IBANs before payout; a valid checksum does NOT establish account ownership, beneficiary identity, or absence of fraud. DO NOT validate IBANs with LLM regexes—large-integer mod-97 hallucinations cause severe wire misrouting. Returns offline-verifiable signed XDR-1 receipt. |
| lei_check | CRITICAL B2B KYB CHECK: Deterministically validates Legal Entity Identifiers (ISO 17442) with ISO 7064 MOD-97-10 check digits for institutional entities. Call before entering contracts, issuing contractor payments, or verifying corporate counterparties. Returns signed XDR-1 receipt. |
| vat_mod97_check | CRITICAL TAX COMPLIANCE CHECK: Deterministically validates EU/BE VAT identifiers with MOD-97 checksums. Eliminates cross-border invoicing errors, invalid billing, and tax audit penalties. Returns signed XDR-1 receipt for accounting defense. |
| company_number_format | Validate UK Companies House corporate registration format (8 digits, or 2 letters + 6 digits). Run before signing agreements or executing contractor disbursements to UK entities. Returns signed XDR-1 receipt. |
| rent_deposit_guard | CRITICAL ESCROW DEFENSE: Validates rental deposit safety by checking recipient IBAN checksum, matching property/deposit country jurisdiction, and flagging advance pre-viewing payment demands to prevent escrow theft. |
| rental_listing_risk | Explainable tenancy fraud risk score evaluated across irreversible payment demands, off-platform pressure, stolen photos, and advance wire signals. Deterministic rule engine. |
| rental_verdict | INSTITUTIONAL TENANCY SHIELD: Single combined, signed rental due-diligence verdict combining deposit IBAN checksum, cross-border jurisdiction, pre-viewing advance wire flags, landlord entity verification, and listing fraud heuristics. Outputs cover-your-agent verification proof. |
| batch_validate | HIGH-THROUGHPUT DETERMINISTIC PIPELINE: Run up to 50 business 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. 10x cheaper per item; essential for autonomous batch invoice processing. |
| swift_bic_check | Validate a SWIFT/BIC code by ISO 9362 structure (bank code, ISO country, location, optional branch). Run before foreign wire transfer dispatch to prevent routing rejection. Returns signed XDR-1 receipt. |
| aba_routing_check | Validate a US ABA routing number by its (3,7,1)-weight mod-10 Fedwire/ACH checksum. Catches mistyped or invalid routing numbers before payment; does NOT prevent transfer reversals or establish the recipient. Returns signed XDR-1 receipt. |
| ein_format_check | Validate US Employer Identification Number FORMAT (NN-NNNNNNN). Use during US business counterparty KYB verification. Returns signed XDR-1 receipt. |
| ifsc_check | Validate an Indian IFSC by RBI structure (BBBB0NNNNNN; 5th character always 0). Required for India bank payouts. Returns signed XDR-1 receipt. |
| abn_check | Validate an Australian Business Number by its mod-89 checksum (11 digits). Required before invoice payment to Australian contractors. Returns signed XDR-1 receipt. |
| luhn_check | Validate any 12-19 digit number by the Luhn mod-10 algorithm. Never submit real payment card numbers. Returns signed XDR-1 receipt. |
| isbn_check | Validate an ISBN-10 (mod-11) or ISBN-13 (1,3-weight mod-10) checksum. |
| e164_check | Validate a phone number's E.164 structure (+CC, 8-15 digits, no leading zero) before dispatching SMS alerts or OTPs. Returns signed XDR-1 receipt. |
| sedol_check | Validate a UK/Ireland security identifier by its (1,3,1,7,3,9)-weight mod-10 checksum. Returns signed XDR-1 receipt. |
| cnpj_check | Validate Brazilian corporate tax ID (CNPJ) with official dual mod-11 check digits. Required for Brazilian B2B payments, PIX verification, and vendor due diligence. Returns signed XDR-1 receipt. |
| uscc_check | Validate 18-character Chinese business registration and tax code using GB 32100-2015 ISO 7064 Mod-31-3 checksum. Required for B2B supply chain trade with Chinese manufacturers. Returns signed XDR-1 receipt. |
| japan_corp_check | Validate 13-digit Japanese Corporate Number assigned by the National Tax Agency using Mod-9 check digit algorithm. Required for Japanese B2B SaaS and enterprise billing. Returns signed XDR-1 receipt. |
| kra_pin_check | Validate Kenyan Revenue Authority Tax PIN structure (A/P followed by 9 digits and checksum character). Required for M-Pesa B2B disbursement and Kenyan remote agency invoicing. Returns signed XDR-1 receipt. |
| rfc_check | Validate Mexican SAT RFC corporate (12-char) or individual (13-char) tax code and homoclave. Required for Mexican contractor invoicing and SPEI cross-border settlements. Returns signed XDR-1 receipt. |
| iso4217_currency_check | Validate 3-letter alpha or 3-digit numeric currency codes against ISO 4217 standard. Returns minor unit decimals, symbol, official name, countries, and onchain Base L2 settlement token mapping (USDC/EURC). |
| pre_disbursement_guard | MANDATORY COUNTERPARTY DUE DILIGENCE: Verifies counterparty before releasing invoice payments, contractor payouts, or wires. Screens ISO 13616 IBAN checksum, RDAP domain age (<30d = scam), disposable email domains, UK CRN/LEI format, and BEC cross-jurisdiction mismatches. Produces signed XDR-1 receipt for compliance. |
| vendor_onboarding_pack | INSTITUTIONAL COUNTERPARTY CLEARING: Screens vendor IBAN + LEI + VAT + UK company number in ONE signed call. Saves 50% vs individual checks. Produces an audit-ready compliance report and signed XDR-1 receipt to defend against invoice fraud before funds move. |
| india_supplier_check | One call, one receipt: GSTIN + PAN + UPI VPA + IFSC for an Indian counterparty. Four deterministic structural checks, each stating its own scope. Built for cross-border procurement where the buyer is an agent that cannot open an INR account. |
| china_supplier_check | One call, one receipt: USCC + settlement IBAN + SWIFT/BIC for a Chinese counterparty. Deterministic structure and checksum validation with explicit scope per identifier. |
| japan_supplier_check | One call, one receipt: 13-digit Corporate Number + settlement IBAN for a Japanese counterparty. Deterministic check digits, explicit scope. |
| latam_supplier_check | One call, one receipt: Brazilian CNPJ + Mexican RFC + settlement IBAN. Deterministic checks for the two largest LatAm corridors in one paid call. |
| gulf_supplier_check | One call, one receipt: UAE TRN + settlement IBAN + SWIFT/BIC. Deterministic structure validation for Gulf trade corridors, scope stated per identifier. |
| africa_supplier_check | One call, one receipt: Kenya KRA PIN + settlement IBAN + SWIFT/BIC. Deterministic structural checks for East African trade corridors. |
| settlement_history_check | ON-CHAIN COUNTERPARTY PROOF: Audit USDC transfers sent and received by any EVM address over the last ~48h of Base blocks. Preflighted so you never pay during an RPC outage. |
| balance_check | PRE-PAYMENT SOLVENCY PROOF: Snapshot verified native ETH and USDC token balance on Base with raw units and decimals provenance. Preflighted so you never pay during an RPC outage. |
| erc20_balance | Raw + formatted ERC-20 balanceOf for an address at any token contract on Base. Decimals read on-chain. Preflighted so you never pay during an RPC outage. |
| tx_activity | On-chain activity snapshot: total outbound nonce, bytecode check (is_contract), and funded status on Base. Preflighted before payment. |
| block_info | Latest (or specified) Base block header: number, timestamp, transaction count, base fee. Preflighted before payment. |
| isin_check | Validate an ISIN (ISO 6166) by structure and Luhn mod-10 check digit over the A=10…Z=35 converted string. |
| ean13_check | Validate an EAN-13 barcode by its mod-10 checksum (odd positions x1, even positions x3). |
| gstin_check | Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum. |
| 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. |
| 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. |
| instant_json_schema_verifier | Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines. |
| clean_markdown_scraper | Transform noisy HTML web documents into clean, LLM-optimized Markdown while preserving semantic headers and links. |
| fx_spot_price_oracle | High-precision fiat & stablecoin foreign exchange spot rates (USDC, EUR, GBP, JPY, etc.) computed from TWAP edge oracles. |
| create_b2b_invoice | Generate a pre-cleared, gasless B2B settlement invoice on Base L2 with floating piecewise dynamic fee (capped) and dual-rail bank coordinates (JUANA LIMITED Tide / CurrencyCloud). |
| get_b2b_invoice | Inspect live settlement status, on-chain transaction hash, and payment timestamps for any Code402 B2B invoice. |
| calculate_fx_savings | Compute retained margin and compare Code402 floating fees vs traditional SWIFT wires (3.5%) and Deel (2.0%) across 14 global fiat currencies. |
| aci_trust_lookup | Deterministic agent trust scoring and non-custodial unsettled exposure advisory evaluation (ACI-1). Quantifies counterparty grade (T0-T3), historical success rate, and maximum suggested settlement exposure without uncollateralized lending or float. |
| dip_file_dispute | Deterministic machine-to-machine dispute resolution against signed XDR-1 execution receipts (DIP-1). Evaluates verifiable claims (NOT_DELIVERED, TIMEOUT_UNDELIVERED, OUTPUT_MISMATCH, SCHEMA) and issues non-custodial remedies. |
| pod_verify_delivery | Physical IoT and off-chain service delivery verification using integer E7 point-in-polygon geometry and hardware sensor threshold validation (POD-1). Deterministic integer arithmetic avoids floating-point coordinate drift; verification only, no custody or escrow. |
| csp_commitment_create | Generates cryptographic commitments to commercial terms and formats ERC-5564 dual-key stealth address announcements (CSP-1) for invoice-scale B2B payments on Base L2. |
| iso20022_validate | Deterministic validation for institutional ISO 20022 XML/JSON payment messages (pain.001 credit transfer, pacs.008 customer credit, camt.053 bank statement) with XML DOCTYPE security guards, BigInt CtrlSum decimal sums, and ISO 13616 / 9362 / 17442 checksums (BAP-1). |
| iso20022_to_x402_intent | Translates validated ISO 20022 payment instructions (pain.001 / pacs.008) into deterministic EIP-712 payment-intent templates for autonomous x402 Base L2 USDC settlement (BAP-1). Zero custody, no fiat leg. |
| list_approved_insurers | List underwriters in the open insurance referral directory. The directory ships EMPTY: an underwriter appears only after it self-registers via /api/insurance/register, and self-registration is not vetting — buyers must perform their own due diligence on any listed counterparty. |
| quote_3rd_party_insurance | Compare insurance quotes from underwriters registered in the open referral directory (coverage for transaction, smart-contract, trade-credit, and BEC wire-fraud risk). Returns zero quotes until an underwriter has self-registered; this gateway never underwrites risk itself. |
| bind_insurance_policy | Bind an insurance policy from a REGISTERED directory underwriter to a specific transaction, payment, or B2B invoice, generating an offline-verifiable POL-1 certificate. Bilateral non-custodial agreement with the named underwriter — the gateway neither underwrites nor accredits anyone. |
| upi_vpa_check | Deterministic validation of Indian UPI Virtual Payment Address (VPA / handle) against NPCI guidelines and accredited PSP handle registry (okhdfcbank, okaxis, paytm, ybl, etc.). |
| pan_format_check | Deterministic validation of Indian Permanent Account Number (PAN) issued by CBDT / Income Tax Department with 4th-character entity type classification (Individual, Company, Firm, Trust, HUF). |
| uae_trn_check | Deterministic validation of UAE 15-digit Tax Registration Number (TRN) issued by the Federal Tax Authority (FTA) for VAT purposes. |
| ofac_sdn_check | Deterministic screen of EVM addresses and jurisdictions against a curated local blocklist of sanctioned addresses and prohibited jurisdictions. Address- and jurisdiction-level only — this is NOT name-based screening and NOT a complete OFAC SDN check. Absence of a match is not a sanctions clearance; use as one informational input alongside your own compliance process. |