Sato Hub
x402 merchant

app.heinrichstech.com

Developer tools API on Base and XRPL EVM, paid per request with x402.

  • Endpoints5
  • Price per requestfrom $0.001
  • Outside payers · 7d1
  • Answer 402n/a

Overview

as of 2026-10-08
Seller wallet
0xda2f35d283c42dd60b965322394bc658a5c1769f
Chains
BaseXRPL EVM
Hosts
app.heinrichstech.com
CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
Developer tools2Onchain data2Identity1
First seen
2026-10-05 · last seen 2026-10-08

What we observed

Paid by 1 outside payer · 7d, observed402 unknown, unknownNot 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.
8 registered

  • 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.

    BaseDeveloper tools

    $0.001/ request

    2026-09-22

  • 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.

    BaseOnchain data

    $0.003/ request

    2026-09-08

  • 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…

    BaseDeveloper tools

    $0.005/ request

    2026-10-06

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

    BitBooth PII Redact: pay 0.002 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…

    BaseDeveloper tools

    $0.008/ request

    2026-09-07

  • 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…

    BaseIdentity

    $0.01/ request

    2026-09-28

  • 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.

    XRPL EVMOnchain data

    n/a/ request

    2026-09-08

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

    BitBooth PII Redact: pay 0.002 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…

    XRPL EVMDeveloper tools

    n/a/ request

    2026-09-07

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

    BitBooth Webhook Signature Verify: pay 0.001 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…

    XRPL EVMDeveloper tools

    n/a/ request

    2026-09-07

Evidence

as of 2026-10-08

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.

unknown

unknown. We hold no reading for this seller's endpoints.

no reading date

x402-style payments, last 7 days (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.

1outside payer

1 x402-style payment from 1 distinct payer, $0.01 USDC in the last 7 days (Base, exact read)

window ended 2026-10-08

Payments
1
Payers
1
USDC
0.01

This window shows the pattern of machine noise (few payers, dust amounts), so it does not count toward the evidence ranking.

All USDC received at this payout address: $0.01 (includes payments that are not x402)

Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-08, every block of the window: 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; Sato Hub's own payer wallets are left out

By chain

ChainSeller walletEndpointsAnswers 402x402-style payments
Base0xda2f35d283c42dd60b965322394bc658a5c1769f4unknown1 x402-style payment from 1 distinct payer, $0.01 USDC in the last 7 days (Base, exact read)
XRPL EVM0xda2f35d283c42dd60b965322394bc658a5c1769f1unknownunknown. 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
$0.001
per request, as registeredas of
Highest
$0.01
per request, as registeredas of

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.

Claim this merchant

Sign a message from the payout address 0xda2f35…c1769f to claim this page or download its payment ledger. 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.

Data CC-BY-4.0, attribution: data by satohub.ai. Data as of 2026-10-08. Appearing here is not an endorsement. Check an endpoint with the doctor.