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hcrb.in

Base block header: number, timestamp, transaction count and base fee for the latest or a given block. Result carries a signed receipt.

Visit hcrb.in

Host	hcrb.in
Price	$0.005–$0.05 per call
Network	Base
Paid endpoints listed	25
Calls, last 30 days*	49
Most unique payers on one endpoint (30 days)*	2
Last paid call*	2026-10-18

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://hcrb.in/v1/tools/block-info/call` Base block header: number, timestamp, transaction count and base fee for the latest or a given block. Result carries a…	POST	$0.01
`https://hcrb.in/v1/tools/gstin-check/call` Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.	POST	$0.005
`https://hcrb.in/v1/tools/iban-check/call` Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of…	POST	$0.005
`https://hcrb.in/v1/tools/pre-disbursement-guard/call` Evaluate supplied identifiers, domain-age evidence and mismatch signals. Requires a preceding receipt hash. An…	POST	$0.005
`https://hcrb.in/v1/tools/erc20-balance/call` Raw and formatted ERC-20 balanceOf for an address on Base, with decimals read from the token. Result carries a signed…	POST	$0.005
`https://hcrb.in/v1/tools/calculate-fx-savings/call` Arithmetic comparison of a USDC settlement against comparator percentages YOU supply (bank_fee_pct, custodial_fee_pct)…	POST	$0.005
`https://hcrb.in/v1/tools/balance-check/call` Native ETH and one ERC-20 balance (default USDC) for an address on Base, raw and formatted. Result carries a signed…	POST	$0.005
`https://hcrb.in/v1/tools/context-distill/call` Deterministic text digest: word count, top-5 most frequent meaningful words (stop words excluded), first sentence, and…	POST	$0.005
`https://hcrb.in/v1/tools/crypto-ticker/call` Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed…	POST	$0.01
`https://hcrb.in/v1/tools/tx-activity/call` Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.	POST	$0.005
`https://hcrb.in/v1/tools/instant-json-schema-verifier/call` Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines.	POST	$0.005
`https://hcrb.in/v1/tools/ifsc-check/call` Check the 11-character Indian IFSC format, including its fifth-character zero. No bank-branch registry lookup or…	POST	$0.005
`https://hcrb.in/v1/tools/fx-spot-price-oracle/call` Reference fiat and stablecoin conversion rate from a static table, not a live feed. Returns rate and inverse; result…	POST	$0.01
`https://hcrb.in/v1/tools/luhn-check/call` Validate any 12-19 digit number by the Luhn mod-10 algorithm. Never submit real payment card numbers. Returns signed…	POST	$0.005
`https://hcrb.in/v1/tools/isbn-check/call` Validate an ISBN-10 (mod-11) or ISBN-13 (1,3-weight mod-10) checksum.	POST	$0.005
`https://hcrb.in/v1/tools/vat-mod97-check/call` Check the supported Belgian VAT format and MOD-97 checksum. BE only; not VIES, other EU VAT formats, registration…	POST	$0.005
`https://hcrb.in/v1/tools/swift-bic-check/call` Check SWIFT/BIC structure and country code. Does not establish bank existence, active routing or beneficiary identity.	POST	$0.005
`https://hcrb.in/v1/tools/lei-check/call` Validate a 20-character LEI and MOD-97 check digits. No registry lookup, active-registration check or legal-entity…	POST	$0.005
`https://hcrb.in/v1/tools/india-supplier-check/call` One call, one receipt: GSTIN + PAN + UPI VPA + IFSC for an Indian counterparty. Four deterministic structural checks,…	POST	$0.02
`https://hcrb.in/v1/tools/vendor-onboarding-pack/call` Check supplied IBAN, LEI, Belgian VAT and UK company-number fields in one result. Structural checks only; no…	POST	$0.02
`https://hcrb.in/v1/tools/batch-validate/call` Run up to 50 supported {tool, value} checks in one request. Each result states its scope. Compare the current batch…	POST	$0.05
`https://hcrb.in/v1/tools/clean-markdown-scraper/call` Fetch a public web page by URL (or take your HTML) and return Markdown plus headings. No JavaScript rendering. Result…	POST	$0.01
`https://hcrb.in/v1/tools/token-contract-risk/call` Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not…	POST	$0.02
`https://hcrb.in/v1/tools/settlement-history-check/call` ON-CHAIN COUNTERPARTY PROOF: Audit USDC transfers sent and received by any EVM address over the last ~48h of Base…	POST	$0.02
`https://hcrb.in/v1/tools/sanctions-address-screen/call` Exact EVM-address comparison against the identified address snapshot and existing operator block policy. Current legal…	POST	$0.005

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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