# Services from hcrb.in on Zero

> hcrb.in serves 39 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/hcrb.in
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/hcrb.in/health.json

## Services

- [GSTIN Validator (code402)](https://www.zero.xyz/c/gstin-validator-code402-5b35be35/llms.txt): $0.005/call via x402. Validates an Indian Goods and Services Tax Identification Number (GSTIN) using offline deterministic checksum logic, returning validity, reason, and normalized form.
- [code402 SWIFT/BIC Check](https://www.zero.xyz/c/code402-swift-bic-check-fb3d190f/llms.txt): $0.005/call via x402. Validates SWIFT/BIC codes using offline deterministic format and structure checks, returning validity, reason, normalized form, and country, paid per call via x402 USDC micropayment.
- [code402 SEDOL Validator](https://www.zero.xyz/c/code402-sedol-validator-588c96f0/llms.txt): $0.005/call via x402. Validates a SEDOL (Stock Exchange Daily Official List) identifier using offline deterministic checksum verification, returning validity, reason, and normalized form.
- [code402 IBAN Validator](https://www.zero.xyz/c/code402-iban-validator-fc7d9055/llms.txt): $0.005/call via x402. Validates and checksums International Bank Account Numbers (IBANs) using offline deterministic logic, returning validity, reason, country, and normalized form — paid per call via x402 USDC micropayment.
- [code402 RFC / Business Identifier Validator](https://www.zero.xyz/c/code402-rfc-business-identifier-validator-b4b33ffb/llms.txt): $0.005/call via x402. Performs offline, deterministic checksum and format validation of business and financial identifiers (IBAN, LEI, VAT, ABA, EIN, IFSC, SWIFT/BIC, ISBN, SEDOL, etc.), paid per call via x402 USDC micropayments.
- [code402 ISIN Validator](https://www.zero.xyz/c/code402-isin-validator-d9efaa2f/llms.txt): $0.005/call via x402. Validates an ISIN (International Securities Identification Number) using offline deterministic checksum verification, returning validity, reason, country, and normalized form.
- [code402 E.164 Phone Number Validator](https://www.zero.xyz/c/code402-e-164-phone-number-validator-cad2e3a1/llms.txt): $0.005/call via x402. Validates E.164-formatted international phone numbers offline and deterministically, returning validity, reason, country, and normalized form
- [VAT MOD97 Checksum Validator](https://www.zero.xyz/c/vat-mod97-checksum-validator-2ed66df2/llms.txt): $0.005/call via x402. Validates VAT numbers using the MOD97 checksum algorithm, returning validity, reason, country, and normalized form — offline and deterministic, no ML or external lookups.
- [code402 ABN Validator](https://www.zero.xyz/c/code402-abn-validator-be807c05/llms.txt): $0.005/call via x402. Validates an Australian Business Number (ABN) using offline deterministic checksum verification, returning validity, reason, and normalized form.
- [code402 Japan Corporate Number Validator](https://www.zero.xyz/c/code402-japan-corporate-number-validator-b8d489ff/llms.txt): $0.005/call via x402. Performs offline deterministic validation of Japanese corporate registration numbers (法人番号) using checksum and format rules, returning validity, reason, normalized form, and scope.
- [code402 ISBN Check](https://www.zero.xyz/c/code402-isbn-check-2dba060e/llms.txt): $0.005/call via x402. Validates an ISBN (International Standard Book Number) using deterministic checksum verification, returning validity, reason, and normalized form — paid per call via x402 USDC micropayment.
- [code402 UPI VPA Check](https://www.zero.xyz/c/code402-upi-vpa-check-4b7fbed2/llms.txt): $0.005/call via x402. Validates a UPI Virtual Payment Address (VPA) format and accreditation offline, returning validity, handle details, and PSP accreditation status via a micropayment-gated API.
- [code402 USCC Validator](https://www.zero.xyz/c/code402-uscc-validator-259a0b49/llms.txt): $0.005/call via x402. Validates a Unified Social Credit Code (USCC) — the Chinese business identifier — using offline deterministic checksum logic, returning validity, reason, and normalized form.
- [code402 Luhn Check](https://www.zero.xyz/c/code402-luhn-check-20b17c3c/llms.txt): $0.005/call via x402. Validates a number using the Luhn algorithm (checksum) to detect transposition/typo errors in credit card numbers, IMEI numbers, and other Luhn-encoded identifiers
- [code402 ACI Trust Lookup](https://www.zero.xyz/c/code402-aci-trust-lookup-091c4f03/llms.txt): $0.005/call via x402. Performs offline deterministic validation and trust-scoring of business identifiers (IBAN, LEI, VAT, ABA, ISBN, SEDOL, EIN, IFSC, SWIFT/BIC, etc.) and returns a tiered score with signed receipt, paid per call via x402 USDC micropayments.
- [code402 ISO 20022 Message Validator](https://www.zero.xyz/c/code402-iso-20022-message-validator-f9e2e33a/llms.txt): $0.01/call via x402. Validates ISO 20022 XML payment messages offline using deterministic checksums, returning namespace, transaction count, and control sum details
- [UAE TRN Validator (code402)](https://www.zero.xyz/c/uae-trn-validator-code402-d167b171/llms.txt): $0.005/call via x402. Performs offline deterministic validation of UAE Tax Registration Numbers (TRN), returning validity, type, authority, and normalized form, paid per call via x402 micropayment.
- [code402 Company Number Format Validator](https://www.zero.xyz/c/code402-company-number-format-validator-3158369f/llms.txt): $0.005/call via x402. Validates and normalizes company registration numbers and business identifiers using offline deterministic checks, returning validity, reason, and scope per call.
- [code402 LEI Check](https://www.zero.xyz/c/code402-lei-check-7f29c66f/llms.txt): $0.005/call via x402. Validates a Legal Entity Identifier (LEI) code using offline deterministic checksum verification, returning validity, reason, normalized form, and country.
- [ISO 4217 Currency Code Validator](https://www.zero.xyz/c/iso-4217-currency-code-validator-7df6ee74/llms.txt): $0.005/call via x402. Validates ISO 4217 currency codes offline using deterministic format checks, returning validity, reason, and normalized form
- [code402 OFAC SDN Sanctions Check](https://www.zero.xyz/c/code402-ofac-sdn-sanctions-check-04661682/llms.txt): $0.005/call via x402. Performs an offline deterministic OFAC Specially Designated Nationals (SDN) sanctions check against a named subject, returning whether the entity is sanctioned and the matching program.
- [EAN-13 Barcode Checksum Validator](https://www.zero.xyz/c/ean-13-barcode-checksum-validator-36ecdd59/llms.txt): $0.005/call via x402. Validates an EAN-13 barcode number using offline deterministic checksum verification, returning validity, reason, and normalized form.
- [code402 Batch Business Identifier Validator](https://www.zero.xyz/c/code402-batch-business-identifier-validator-89428a9c/llms.txt): $0.05/call via x402. Validates multiple business, financial, and regulatory identifiers (IBAN, LEI, VAT, ABA, ISBN, SEDOL, EIN, IFSC, SWIFT/BIC, etc.) offline and deterministically in a single batch call, returning scope and validity per identifier.
- [code402 Rental Verdict](https://www.zero.xyz/c/code402-rental-verdict-6f5b8106/llms.txt): $0.05/call via x402. Runs offline deterministic due-diligence checks on rental applications and business identifiers, returning a clear/caution/high-risk verdict with a numeric risk score.
- [code402 KRA PIN Check](https://www.zero.xyz/c/code402-kra-pin-check-21823e38/llms.txt): $0.005/call via x402. Validates a Kenya Revenue Authority (KRA) Personal Identification Number using offline deterministic format/checksum rules, returning validity, reason, and normalized form.
- [EIN Format Check](https://www.zero.xyz/c/ein-format-check-75f08406/llms.txt): $0.005/call via x402. Validates the format of a US Employer Identification Number (EIN) using offline deterministic rules, returning validity, reason, and normalized form.
- [code402 CNPJ Check](https://www.zero.xyz/c/code402-cnpj-check-71aae181/llms.txt): $0.005/call via x402. Validates a Brazilian CNPJ (Cadastro Nacional da Pessoa Jurídica) business identifier using offline deterministic checksum verification, paid per call via x402 micropayments.
- [code402 IFSC Code Validator](https://www.zero.xyz/c/code402-ifsc-code-validator-7269fe89/llms.txt): $0.005/call via x402. Validates Indian Financial System Code (IFSC) identifiers using offline deterministic format checks, returning validity, reason, and normalized form.
- [code402 Assured Quote – Business Identifier Validation](https://www.zero.xyz/c/code402-assured-quote-business-identifier-validation-ea4700b0/llms.txt): $0.005/call via x402. Performs offline, deterministic checksum and format validation of business/financial identifiers (IBAN, LEI, VAT, ABA, ISBN, SEDOL, EIN, IFSC, SWIFT/BIC, etc.), paid per call via x402 USDC micropayment.
- [code402 PAN Format Check](https://www.zero.xyz/c/code402-pan-format-check-b4bf79c5/llms.txt): $0.005/call via x402. Validates an Indian Permanent Account Number (PAN) offline using deterministic format rules, returning validity, reason, and entity type without ML or external lookups.
- [code402 Fuzzy Match Sanctions](https://www.zero.xyz/c/code402-fuzzy-match-sanctions-30f3c510/llms.txt): $0.01/call via x402. Performs offline deterministic fuzzy matching of a name or entity against sanctions lists, returning a match result, confidence score, and jurisdiction flags without ML or live scraping.
- [code402 B2B Invoice Lookup](https://www.zero.xyz/c/code402-b2b-invoice-lookup-d353428d/llms.txt): $0.005/call via x402. Performs offline deterministic validation of a B2B invoice record, verifying its status, settlement details, and associated merchant/client data via a pay-per-call x402 USDC micropayment.
- [code402 Rent Deposit Guard](https://www.zero.xyz/c/code402-rent-deposit-guard-bdb13f2e/llms.txt): $0.02/call via x402. Runs offline deterministic due-diligence checks on rental applications, returning a risk score and risk band (low/elevated/high) with specific flags fired.
- [hcrb.in Settlement History Check](https://www.zero.xyz/c/hcrb-in-settlement-history-check-fa60189b/llms.txt): $0.02/call via x402. Performs an offline deterministic check of on-chain settlement history for a given EVM wallet address
- [code402 B2B Invoice Creator](https://www.zero.xyz/c/code402-b2b-invoice-creator-da475ed5/llms.txt): $0.005/call via x402. Creates a verifiable B2B invoice with a payment URL for a business transaction, returning invoice ID, invoice URL, and pay URL via x402 micropayment protocol
- [FX Spot Price Oracle](https://www.zero.xyz/c/fx-spot-price-oracle-35745e86/llms.txt): $0.01/call via x402. Returns a real-time foreign exchange spot price for a given currency pair, including the rate, inverse, timestamp, and source.
- [code402 Context Distill](https://www.zero.xyz/c/code402-context-distill-e08114c5/llms.txt): $0.005/call via x402. Offline deterministic text distillation that extracts word count, top words, content hash, and first sentence from input text — paid per call via x402 USDC micropayments on Base.
- [code402 Bind Insurance Policy](https://www.zero.xyz/c/code402-bind-insurance-policy-544950ac/llms.txt): $0.01/call via x402. Offline deterministic validation and binding of an insurance policy, returning a signed certificate with coverage details, paid per-call via x402 USDC micropayment.
- [code402 Clean Markdown Scraper](https://www.zero.xyz/c/code402-clean-markdown-scraper-5d82b740/llms.txt): $0.015/call via x402. Fetches a URL and returns its content as clean, structured Markdown with word count and headings

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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