bots.st/x402-checks

x402-checks

Deterministic ID checks and signed receipt generation

1132 ms

answered our call 8 Nov, 02:27 UTC

State: Answered
Protocol: MCP 2025-06-18
Tools listed: 57
Answered: 3 of the last 3 calls

How to reach it

MCP, HTTPhttps://api.code402.dev/mcp

What it can do

Tool	What it says it does
`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.
`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.
`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.
`africa_supplier_check`	One call, one receipt: Kenya KRA PIN + settlement IBAN + SWIFT/BIC. Deterministic structural checks for East African trade corridors.
`balance_check`	Native ETH and one ERC-20 balance (default USDC) for an address on Base, raw and formatted. Result carries a signed receipt.
`batch_validate`	Validate up to 50 tax, bank and legal-entity identifiers (IBAN, LEI, VAT, SWIFT/BIC, ABA routing, EIN, IFSC, ABN, GSTIN, ISIN, SEDOL, EAN-13, ISBN, E.164 or Luhn checks) in one batch request. Each result states its scope. Compare the current batch quote with individual quotes; savings depend on…
`block_info`	Base chain (8453) block header data: block number, timestamp, transaction count and base fee for any block. Result carries a signed receipt.
`calculate_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 comparators are assumptions, not measurements of any bank or provider; no protocol fee is deducted on this rail.
`check_price`	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 into an agent planner's context without creating any financial obligation. If the planner acts on the quote, it hits the settlement_url…
`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.
`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.
`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.
`company_number_format`	Check supported UK company-number syntax. No Companies House lookup, entity-existence check or active-registration verification.
`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.
`create_b2b_invoice`	Create a merchant-direct Base token invoice. New automated payments require a durable EOA authorization journal and a configured provider. No active protocol fee; no generic bank-wire authority, independent delivery or contract-wallet guarantee.
`crypto_ticker`	Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed receipt.
`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.
`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.
`ean13_check`	Validate an EAN-13 barcode by its mod-10 checksum (odd positions x1, even positions x3).
`ein_format_check`	Validate US Employer Identification Number FORMAT (NN-NNNNNNN). Use during US business counterparty KYB verification. Returns signed XDR-1 receipt.
`erc20_balance`	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.
`get_b2b_invoice`	Read public recorded invoice status and held-operation next action. Private records and credentials require a separate fresh read-only signature from the durably confirmed original payer; URLs and payment vouchers grant no read authority.
`gstin_check`	Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.
`gulf_supplier_check`	One call, one receipt: UAE TRN + settlement IBAN + SWIFT/BIC. Deterministic structure validation for Gulf trade corridors, scope stated per identifier.
`iban_check`	Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.
`ifsc_check`	Check the 11-character Indian IFSC format, including its fifth-character zero. No bank-branch registry lookup or account verification.
`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.
`instant_json_schema_verifier`	Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines.
`isin_check`	Validate an ISIN (ISO 6166) by structure and Luhn mod-10 check digit over the A=10…Z=35 converted string.
`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.
`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).
`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).
`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.
`japan_supplier_check`	One call, one receipt: 13-digit Corporate Number + settlement IBAN for a Japanese counterparty. Deterministic check digits, explicit scope.
`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.
`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.
`lei_check`	Validate a 20-character LEI and MOD-97 check digits. No registry lookup, active-registration check or legal-entity identity verification.
`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).
`pre_disbursement_guard`	Check supplier tax and bank identifiers (IBAN, LEI, EU VAT, UK company number), domain-age evidence and country mismatch signals before vendor payment. Requires a preceding receipt hash. An advisory result is not verified identity, fraud clearance or authorization to release funds.
`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…
`reconcile`	Deterministic reconciliation verdicts: pain.001/pacs.008 instructions vs camt.053 statements or NACHA ACH files, matched by end-to-end id and BigInt-exact amounts. Verdicts: SETTLED, UNPAID, AMOUNT_MISMATCH, DUPLICATE_PAYMENT, plus unmatched statement entries. Facts computed from the documents…
`rent_deposit_guard`	Check deposit IBAN checksum and supplied country/viewing indicators. Rule-based risk signals only; no ownership verification, escrow protection or guarantee against 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`	Combine deposit identifier checks with supplied country, viewing and listing indicators. Does not verify landlord identity, property ownership or safety of payment.
`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.
`sanctions_address_screen`	Screen an EVM wallet address or ISO country code by exact comparison against the identified sanctions address snapshot and existing operator block policy. Current legal status is unknown; is_sanctioned is null. valid=false preserves a local block; valid=null never authorizes a transaction. Names…
`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.
`simulate_spend_sentinel`	Run synthetic prompt-injection halts, malformed-delivery rejection, and bounded-spend eligibility examples under AP2 envelopes. No live escrow, refund, facilitator or chain action occurs.
`swift_bic_check`	Check SWIFT/BIC structure and country code. Does not establish bank existence, active routing or beneficiary identity.
`token_contract_risk`	Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Result carries a signed receipt.
`tx_activity`	Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.
`uae_trn_check`	Deterministic validation of UAE 15-digit Tax Registration Number (TRN) issued by the Federal Tax Authority (FTA) for VAT purposes.
`upi_vpa_check`	Deterministic structural validation of an Indian UPI Virtual Payment Address (VPA / handle): local-part syntax, handle against a LOCAL list of accredited PSP handles (okhdfcbank, okaxis, paytm, ybl and others), and length rules. It is NOT a live registry lookup: no request leaves this worker, and…
`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.
`vat_mod97_check`	Check the supported Belgian VAT format and MOD-97 checksum. BE only; not VIES, other EU VAT formats, registration status or tax compliance.
`vendor_onboarding_pack`	Check supplied IBAN, LEI, Belgian VAT and UK company-number fields in one result. Structural checks only; no ownership, registry or fraud clearance.

In its maker's words

Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents.

Website: hcrb.in
Source: github.com/89rat/m2m-exchange
Publisher: 89rat (4 listings in the registry)
Listed from: the official MCP Registry as io.github.89rat/x402-checks
Version: 1.3.0, updated 6 Oct 2026
Kinds of work: Security and trust, Finance and markets, Documents and files

The domain it lives on

code402.dev: registered 12 Aug 2026 (3 months ago), at CloudFlare, Inc.
hcrb.in: registered 29 Jul 2023 (3 years ago), at GoDaddy

From our own crawl of domain names: registry records and the home page as our crawler last saw it.

Every call we made

When	What happened	Time
8 Nov, 02:27 UTC	Answered	1132 ms
7 Nov, 23:24 UTC	Answered	1934 ms
7 Nov, 21:44 UTC	Answered	1190 ms

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