Sato Hub
x402 merchant

app.heinrichstech.com

Developer tools API on XRP Ledger, paid per request with x402.

  • Endpoints5
  • Price per requestn/a
  • Outside payersn/a
  • Answer 4021 of 3

Overview

as of 2026-11-11
Seller wallet
rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy
Chains
XRP Ledger
Hosts
app.heinrichstech.com
CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
Developer tools4Identity1
First seen
2026-10-05 · last seen 2026-11-11

What we observed

Payments unknown, unknownAnswers 402, observedNot claimed
See the readings

Endpoints

EndpointsDescriptions are the seller's own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
6 registered

  • https://app.heinrichstech.com/v1/cdp/chain/erc20-balance

    ERC-20 token balance for any wallet — USDC, USDT, DAI, or any token contract — via balanceOf eth_call, with decimals applied. Ethereum or Base mainnet. Pay 0.003 USDC.

    XRP LedgerOnchain data

    n/a/ request

    2026-09-08

  • https://app.heinrichstech.com/v1/cdp/echo

    BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.

    XRP LedgerDeveloper tools

    n/a/ request

    2026-10-30

  • https://app.heinrichstech.com/v1/cdp/pii-redact

    BitBooth PII Redact: pay 0.008 USDC, strip emails, phones, SSNs, credit cards, IPv4 addresses, and hex-looking secrets from a text blob before passing it to an LLM. Compliance primitive for agents in regulated industrie…

    XRP LedgerDeveloper tools

    n/a/ request

    2026-10-26

  • https://app.heinrichstech.com/v1/cdp/regex-test

    BitBooth Regex Test: pay 0.005 USDC, safely compile and run a regex against a corpus. Returns structured matches with capture groups, indices, and lengths. JS engine flags (g, i, m, s, u, y, d). Hard CPU deadline guards…

    XRP LedgerDeveloper tools

    n/a/ request

    2026-10-26

  • https://app.heinrichstech.com/v1/cdp/webhook-sig-verify

    BitBooth Webhook Signature Verify: pay 0.005 USDC, verify a webhook signature against the provider's canonical HMAC scheme. Supports stripe, github, vercel, cdp, slack, and generic HMAC-SHA256. Constant-time compare, cl…

    XRP LedgerDeveloper tools

    n/a/ request

    2026-10-26

  • https://app.heinrichstech.com/v1/cdp/whois

    BitBooth Whois: pay 0.01 USDC, get the parsed whois record for any domain — registrar, creation/updated/expiry dates, name servers, status flags, plus the raw whois text. Two-hop resolution via whois.iana.org then the a…

    XRP LedgerIdentity

    n/a/ request

    2026-10-19

Evidence

as of 2026-11-11

Answers HTTP 402

Answers HTTP 402Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.

1 of 3

1 of 3 probed endpoints answered HTTP 402 with a parseable payment payload

checked 2026-11-11

x402-style payments, 7-day window (Base)

x402-style paymentsMethod: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.

unknown

unknown. not measured on this chain yet

no reading date

By chain

ChainSeller walletEndpointsAnswers 402x402-style payments
XRP Ledgerrfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy51 of 3 probed endpoints answered HTTP 402 with a parseable payment payload
2026-11-11
unknown. not measured on this chain yet

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

Pricing

Lowest
n/a
per request, as registeredas of
Median
n/a
per request, as registeredas of
Highest
n/a
per request, as registeredas of

Unknown. Prices are decoded only for USDC on Base and Solana.

Claim this merchant

Sign a message from the payout address rfryheo6…kBkUEy to claim this page. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.

The payment ledger covers Base only for now, so it is not offered for XRP Ledger.

Data CC-BY-4.0, attribution: data by satohub.ai. Data as of 2026-11-11. Appearing here is not an endorsement. Check an endpoint with the doctor.