x402 merchant

agentshelf.syntexa.ch

Name: agentshelf.syntexa.ch on x402: dated readings
Creator: Sato Hub
License: https://creativecommons.org/licenses/by/4.0/

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

Endpoints1,182
Price per requestfrom $0.001
Outside payers · 7d0
Answer 4021 of 1

Overview

as of 2026-10-11

Seller wallet: 0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38
Chains: Base
Hosts: agentshelf.syntexa.ch
Categories: Developer tools544Web data277Other178Identity147Commerce25Media6Market data3AI models1Onchain data1
First seen: 2026-10-05 · last seen 2026-10-11

What we observed

No outside payments seen · 7d2026-10-11Answers 4022026-10-10Not claimed

See the readings

Endpoints

1,182 registered

https://agentshelf.syntexa.ch/v1/tls-expiry-90
Call when an agent needs whether the port-443 certificate stays valid for at least 90 days. The threshold changes the ok_check bit. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/tls-expiry-90 first.
BaseIdentity
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-blockquote
Call when an agent needs text of //blockquote via //blockquote from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-blockquote first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-dt
Call when an agent needs text of //dt via //dt from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-dt first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-footer
Call when an agent needs text of //footer via //footer from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-footer first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-h2
Call when an agent needs text of //h2 via //h2 from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-h2 first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-source-src
Call when an agent needs src attributes of //source via //source/@src from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-source-src first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/xpath-textarea-name
Call when an agent needs name attributes of //textarea via //textarea/@name from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/xpath-textarea-name first.
BaseWeb data
$0.008/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/base32hex-encode
Call when an agent needs text encoded with base32hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/base32hex-encode first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/base62-encode
Call when an agent needs text encoded with base62. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/base62-encode first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/base64-encode
Call when an agent needs text encoded with base64. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/base64-encode first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/case-constant
Call when an agent needs text rewritten with the constant case transform. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/case-constant first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-card-amex
Call when an agent needs whether a number passes Luhn and matches amex. Nothing is stored. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-card-amex first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-color-named
Call when an agent needs whether a string is one of a small CSS color name set. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-color-named first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-email-plus-ok
Call when an agent needs whether an email with a plus tag is syntactically allowed. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-email-plus-ok first.
BaseIdentity
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban
Call when an agent needs whether an IBAN matches a known country length and mod-97. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-by
Call when an agent needs whether an IBAN is a mod-97-valid BY number of length 28. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-by first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-hu
Call when an agent needs whether an IBAN is a mod-97-valid HU number of length 28. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-hu first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-ie
Call when an agent needs whether an IBAN is a mod-97-valid IE number of length 22. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ie first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-iq
Call when an agent needs whether an IBAN is a mod-97-valid IQ number of length 23. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-iq first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-mr
Call when an agent needs whether an IBAN is a mod-97-valid MR number of length 27. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-mr first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-mt
Call when an agent needs whether an IBAN is a mod-97-valid MT number of length 31. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-mt first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-iban-tl
Call when an agent needs whether an IBAN is a mod-97-valid TL number of length 23. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-tl first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-ip-cidr4
Call when an agent needs whether a string is an IPv4 CIDR prefix. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-ip-cidr4 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-schema-2020-12
Call when an agent needs a limited JSON Schema 2020-12 check. Dialects disagree on exclusive bounds and format. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-schema-2020-12 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-upc-a
Call when an agent needs whether a 12-digit UPC-A passes Luhn. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-upc-a first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-vat-be
Call when an agent needs whether a BE VAT checksum is valid. No registry lookup. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-vat-be first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/check-vat-si
Call when an agent needs whether a SI VAT checksum is valid. No registry lookup. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-vat-si first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/checksum-adler32-hex
Call when an agent needs a adler32 checksum of text as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/checksum-adler32-hex first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/cron-next-6-3
Call when an agent needs the next 3 UTC times for a 6-field cron expression. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/cron-next-6-3 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/css-button
Call when an agent needs button text via button from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-button first.
BaseWeb data
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/css-form-action
Call when an agent needs form actions via form[action] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-form-action first.
BaseWeb data
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/css-html-lang
Call when an agent needs html lang via html[lang] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-html-lang first.
BaseWeb data
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/css-img-data-src
Call when an agent needs lazy image data-src values via img[data-src] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-img-data-src first.
BaseWeb data
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/css-itemprop
Call when an agent needs itemprop values via [itemprop] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-itemprop first.
BaseWeb data
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/css-link-href
Call when an agent needs link hrefs via link[href] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-link-href first.
BaseWeb data
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/css-meta-charset
Call when an agent needs meta charset values via meta[charset] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-meta-charset first.
BaseWeb data
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/css-pre
Call when an agent needs pre text via pre from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-pre first.
BaseWeb data
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/diff-lines
Call when an agent needs a lines diff of two strings. No network. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/diff-lines first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-blake2b512-base64url-utf16
Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64url-utf16 first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64-latin1
Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as base64. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64-latin1 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-blake2s256-hex
Call when an agent needs a blake2s256 digest of text, encoded as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-hex first.
BaseDeveloper tools
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/digest-md5-base64url-rawhex
Call when an agent needs a md5 digest of hex bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base64url-rawhex first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-ripemd160-hex-rawhex
Call when an agent needs a ripemd160 digest of hex bytes, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-ripemd160-hex-rawhex first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-sha1-base64url-utf16
Call when an agent needs a sha1 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base64url-utf16 first.
BaseOther
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-sha224-base64url
Call when an agent needs a sha224 digest of text, encoded as base64url. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha224-base64url first.
BaseDeveloper tools
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/digest-sha256-base64-latin1
Call when an agent needs a sha256 digest of latin1 bytes, encoded as base64. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64-latin1 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-sha256-hex
Call when an agent needs a sha256 digest of text, encoded as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-hex first.
BaseDeveloper tools
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64-latin1
Call when an agent needs a sha3-224 digest of latin1 bytes, encoded as base64. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64-latin1 first.
BaseDeveloper tools
$0.009/ request
2026-09-23
https://agentshelf.syntexa.ch/v1/digest-sha3-224-hex
Call when an agent needs a sha3-224 digest of text, encoded as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-hex first.
BaseDeveloper tools
$0.009/ request
2026-09-22
https://agentshelf.syntexa.ch/v1/digest-sha3-256-hex-rawhex
Call when an agent needs a sha3-256 digest of hex bytes, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-hex-rawhex first.
BaseDeveloper tools
$0.009/ request
2026-09-23

Evidence

as of 2026-10-11

Answers HTTP 402

1 of 1

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

checked 2026-10-10

x402-style payments, last 7 days (Base)

0outside payers

no x402-style payments observed in the last 7 days (Base, exact read)

window ended 2026-10-11

All USDC received at this payout address: $0.00 (includes payments that are not x402)

Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-11, 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

Chain	Seller wallet	Endpoints	Answers 402	x402-style payments
Base	0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38	1,182	1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-10	no x402-style payments observed in the last 7 days (Base, exact read)

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 2026-10-11

Median

$0.005

per request, as registeredas of 2026-10-11

Highest

$0.02

per request, as registeredas of 2026-10-11

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 0x1d61fa…e55a38 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: x402-list.com (CC BY 4.0). Data as of 2026-10-11. Appearing here is not an endorsement. Check an endpoint with the doctor.