x402-checks

Name: x402-checks
Author: 89rat

MCP serverMCP

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

by 89ratrepository ↗homepage ↗v1.3.0

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Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability12/12 checks ok

30 days ago

when	check	result	http	latency	detail
3 h ago	mcp initialize	ok	200	55 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
10 h ago	mcp initialize	ok	200	49 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
17 h ago	mcp initialize	ok	200	39 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
24 h ago	mcp initialize	ok	200	62 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
31 h ago	mcp initialize	ok	200	42 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
2 d ago	mcp initialize	ok	200	69 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
2 d ago	mcp initialize	ok	200	31 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
2 d ago	mcp initialize	ok	200	26 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
2 d ago	mcp initialize	ok	200	16 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools
3 d ago	mcp initialize	ok	200	23 ms	server code402 1.3.0 · protocol 2025-06-18 · 24 tools

Tools observed via MCP handshake

crypto_ticker — Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed 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.
block_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 — Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.
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
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.
balance_check — Native ETH and one ERC-20 balance (default USDC) for an address on Base, raw and formatted. 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 com
iban_check — Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.
lei_check — Validate a 20-character LEI and MOD-97 check digits. No registry lookup, active-registration check or legal-entity identity verification.
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.
swift_bic_check — Check SWIFT/BIC structure and country code. Does not establish bank existence, active routing or beneficiary identity.
batch_validate — 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_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.
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 cros
pre_disbursement_guard — 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 — Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.
ifsc_check — Check the 11-character Indian IFSC format, including its fifth-character zero. No bank-branch registry lookup or account verification.
sanctions_address_screen — Exact EVM-address comparison against the identified address snapshot and existing operator block policy. Current legal status is unknown; is_sanctioned is null.
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
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 fo

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registryio.github.89rat/x402-checks

first seen 3 d ago · fetched 8 h agoopen ↗

Field history (7 recent events)

3 d ago · declared · summary → "Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents."
3 d ago · declared · description → "Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents."
3 d ago · declared · publisherName → "89rat"
3 d ago · declared · homepageUrl → "https://hcrb.in"
3 d ago · declared · repoUrl → "https://github.com/89rat/m2m-exchange"
3 d ago · declared · version → "1.3.0"
3 d ago · declared · protocols → ["mcp"]

x402-checks

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