# code402

> Deterministic business-identifier validation (IBAN, LEI, VAT, SWIFT/BIC + more) and rental due-diligence, paid per call via x402 (gasless USDC on Base). Signed offline-verifiable receipts. Free tier 5 calls/day. Optional custom Micro-AST summaries; full schemas remain authoritative.

- **Domain**: `hcrb.in`
- **Provider**: openfang (https://hcrb.in)
- **A2A protocol version**: 1.0.1
- **Kind**: paid_api
- **Category**: verification
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 100%
- **Payment protocol**: x402 · network `eip155:8453`
- **Wallet**: `0xc59c85e661d34084a7769f955d17fd38254a6235`

## Skills
- **Crypto ticker** — Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed receipt.
- **ERC-20 Token Balance Snapshot** — Raw and formatted ERC-20 balanceOf for an address on Base, with decimals read from the token. Result carries a signed receipt.
- **FX spot price oracle** — Reference fiat and stablecoin conversion rate from a static table, not a live feed. Returns rate and inverse; result carries a signed receipt.
- **Base Block Header Info** — Base block header: number, timestamp, transaction count and base fee for the latest or a given block. Result carries a signed receipt.
- **Tx Activity & Contract Detection** — Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.
- **Token contract facts (Base)** — Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Result carries a signed
- **Clean markdown scraper** — Fetch a public web page by URL (or take your HTML) and return Markdown plus headings. No JavaScript rendering. Result carries a signed receipt.
- **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 
- **Instant JSON schema verifier** — Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines.
- **Base Account Balance Snapshot** — Native ETH and one ERC-20 balance (default USDC) for an address on Base, raw and formatted. Result carries a signed receipt.
- **Calculate cross-border FX savings** — Arithmetic comparison of a USDC settlement against comparator percentages YOU supply (bank_fee_pct, custodial_fee_pct) across 14 global fiat currencies. The com
- **IBAN Structure and Checksum Check** — Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.
- **LEI Structure and Checksum Check** — Validate a 20-character LEI and MOD-97 check digits. No registry lookup, active-registration check or legal-entity identity verification.
- **Belgian VAT MOD-97 Check** — Check the supported Belgian VAT format and MOD-97 checksum. BE only; not VIES, other EU VAT formats, registration status or tax compliance.
- **SWIFT/BIC Structure Check** — Check SWIFT/BIC structure and country code. Does not establish bank existence, active routing or beneficiary identity.
- **Batch Identifier Checks (up to 50 items)** — Run up to 50 supported {tool, value} checks in one request. Each result states its scope. Compare the current batch quote with individual quotes; savings depend
- **Vendor Identifier Check Pack** — Check supplied IBAN, LEI, Belgian VAT and UK company-number fields in one result. Structural checks only; no ownership, registry or fraud clearance.
- **India Supplier Verification Pack** — One call, one receipt: GSTIN + PAN + UPI VPA + IFSC for an Indian counterparty. Four deterministic structural checks, each stating its own scope. Built for cros
- **Counterparty Risk Indicators** — Evaluate supplied identifiers, domain-age evidence and mismatch signals. Requires a preceding receipt hash. An advisory result is not verified identity, fraud c
- **GSTIN check (India)** — Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.
- **IFSC Format Check** — Check the 11-character Indian IFSC format, including its fifth-character zero. No bank-branch registry lookup or account verification.
- **Address Snapshot & Operator Policy Comparison** — Exact EVM-address comparison against the identified address snapshot and existing operator block policy. Current legal status is unknown; is_sanctioned is null.
- **Zero-cost price index and gasless x402 quote generator** — Instant zero-cost pricing hook for code402 tools. Returns the live price, an opaque quote_id, TTL, and the settlement URL. Free forever — feeds the price index 
- **Verify any XDR-1 receipt — free, stateless, any issuer** — 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 fo

## URLs
- Agent card: https://hcrb.in/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/hcrb.in
- Documentation: https://hcrb.in