Deterministic business-identifier validation (IBAN, LEI, VAT, UK company no.) and rental due-diligence (deposit-safety, listing-risk, one signed verdict), paid per call via x402 — gasless EIP-3009 USDC on Base. Non-custodial, signed receipts, offline + explainable (no ML, no scraping). First 20 calls/day free.
POST /mcpPOST /v1/tools/{tool}/calliban-check | Validate an IBAN by ISO 13616 structure and MOD-97-10 checksum (offline, no bank lookup). |
lei-check | Validate a Legal Entity Identifier (ISO 17442 + ISO 7064 MOD-97-10 check digits). |
vat-mod97-check | Structural VAT check (BE mod-97 family). |
company-number-format | Validate UK Companies House number format (not existence). |
rent-deposit-guard | Rental deposit safety: IBAN checksum + property/deposit country alignment + pre-viewing flag. |
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. |
batch-validate | Run up to 50 identifier checks (IBAN / LEI / VAT / UK company / SWIFT / ABA / EIN / IFSC / ABN / Luhn / ISBN / E.164 / SEDOL) 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. |
swift-bic-check | Validate a SWIFT/BIC code by ISO 9362 structure (bank code, ISO country, location, optional branch). |
aba-routing-check | Validate a US ABA routing number by its (3,7,1)-weight mod-10 checksum. |
ein-format-check | Validate US Employer Identification Number FORMAT (NN-NNNNNNN). No public EIN checksum exists. |
ifsc-check | Validate an Indian IFSC by RBI structure (BBBB0NNNNNN; 5th character always 0). |
abn-check | Validate an Australian Business Number by its mod-89 checksum (11 digits). |
luhn-check | Validate any 12-19 digit number by the Luhn mod-10 algorithm (card-style checksums). Never submit real card numbers. |
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). |
sedol-check | Validate a UK/Ireland security identifier by its (1,3,1,7,3,9)-weight mod-10 checksum. |
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. |
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. |
curl -s -X POST https://rail.akrivis.in/v1/tools/iban-check/call \
-H "content-type: application/json" -d '{"input":{"iban":"GB82 WEST 1234 5698 7654 32"}}'
Price from $0.000999–0.05 per call, dynamic (idle prices decay toward the floor; demand bumps them up; live quotes on /health) USDC/call. Non-custodial — payer→seller direct on Base; the rail never holds funds. Global edge (Cloudflare Workers) · self-describing MCP + x402 · no registry required. · Listed on the x402 Registry