Sato Hub
x402 merchant

agentshelf.syntexa.ch

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

  • Endpoints1,179
  • Price per requestfrom $0.001
  • Outside payers · 7d0
  • Answer 4021 of 1

Overview

as of 2026-10-10
Seller wallet
0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38
Chains
Base
Hosts
agentshelf.syntexa.ch
CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
Developer tools541Web data277Other178Identity147Commerce25Media6Market data3AI models1Onchain data1
First seen
2026-10-05 · last seen 2026-10-10

What we observed

No outside payments seen · 7d, not observedAnswers 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.
1,182 registered

  • https://agentshelf.syntexa.ch/v1/xpath-script-type

    Call when an agent needs type attributes of //script via //script/@type from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/xpath-script-type first.

    BaseWeb data

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-video-poster

    Call when an agent needs poster attributes of //video via //video/@poster from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/xpath-video-poster first.

    BaseWeb data

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/base58check-p2pkh-encode

    Call when an agent needs text encoded with base58check-p2pkh. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/base58check-p2pkh-encode first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/case-swap

    Call when an agent needs text rewritten with the swap case transform. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/case-swap first.

    BaseOnchain data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/case-title

    Call when an agent needs text rewritten with the title case transform. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/case-title first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-card-unionpay

    Call when an agent needs whether a number passes Luhn and matches unionpay. Nothing is stored. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-card-unionpay first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-date-unix-s

    Call when an agent needs whether a string is 10-digit Unix seconds. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-date-unix-s first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-ae

    Call when an agent needs whether an IBAN is a mod-97-valid AE number of length 23. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ae first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-es

    Call when an agent needs whether an IBAN is a mod-97-valid ES number of length 24. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-es first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-fo

    Call when an agent needs whether an IBAN is a mod-97-valid FO number of length 18. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-fo first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-lb

    Call when an agent needs whether an IBAN is a mod-97-valid LB number of length 28. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-lb first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-no

    Call when an agent needs whether an IBAN is a mod-97-valid NO number of length 15. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-no first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-qa

    Call when an agent needs whether an IBAN is a mod-97-valid QA number of length 29. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-qa first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-si

    Call when an agent needs whether an IBAN is a mod-97-valid SI number of length 19. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-si first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-iban-va

    Call when an agent needs whether an IBAN is a mod-97-valid VA number of length 22. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-va first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-mac-dot

    Call when an agent needs whether a string is a Cisco dotted MAC address. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-mac-dot first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-mod97

    Call when an agent needs whether a numeric string is 1 mod 97. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-mod97 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-phone-min7

    Call when an agent needs whether a phone has at least 7 digits. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-phone-min7 first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-semver-tilde

    Call when an agent needs whether a string is a tilde semver range. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-semver-tilde first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-vat-bg

    Call when an agent needs whether a BG VAT checksum is valid. No registry lookup. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-vat-bg first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/check-vat-dk

    Call when an agent needs whether a DK VAT checksum is valid. No registry lookup. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-vat-dk first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/checksum-crc16-ccitt-hex

    Call when an agent needs a crc16-ccitt checksum of text as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-ccitt-hex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/color-hex-to-rgb

    Call when an agent needs a color converted with hex-to-rgb. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/color-hex-to-rgb first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/crockford-encode

    Call when an agent needs text encoded with crockford. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/crockford-encode first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/cron-next-5-3

    Call when an agent needs the next 3 UTC times for a 5-field cron expression. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-3 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/cron-next-6-24

    Call when an agent needs the next 24 UTC times for a 6-field cron expression. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/cron-next-6-24 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-a-title

    Call when an agent needs anchor titles via a[title] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-a-title first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-article

    Call when an agent needs article text via article from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-article first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-dt

    Call when an agent needs definition term text via dt from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-dt first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-h4

    Call when an agent needs h4 text via h4 from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-h4 first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-jsonld

    Call when an agent needs JSON-LD script text via script[type='application/ld+json'] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-jsonld first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-link-icon

    Call when an agent needs icon hrefs via link[rel='icon'] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-link-icon first.

    BaseWeb data

    $0.003/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/css-source-src

    Call when an agent needs media source src values via source[src] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-source-src first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-textarea-name

    Call when an agent needs textarea names via textarea[name] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-textarea-name first.

    BaseWeb data

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/csv-sniff

    Call when an agent needs the sniffed CSV dialect plus column and row counts. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/csv-sniff first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-blake2b512-base32-latin1

    Call when an agent needs a blake2b512 digest of latin1 bytes, encoded as base32. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base32-latin1 first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-blake2b512-hex-utf16

    Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-hex-utf16 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-rawhex

    Call when an agent needs a blake2s256 digest of hex bytes, encoded as base64url. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64url-rawhex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-md5-base64url

    Call when an agent needs a md5 digest of text, encoded as base64url. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base64url first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-md5-hex-rawhex

    Call when an agent needs a md5 digest of hex bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-rawhex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-ripemd160-hex

    Call when an agent needs a ripemd160 digest of text, encoded as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-ripemd160-hex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha1-base32-latin1

    Call when an agent needs a sha1 digest of latin1 bytes, encoded as base32. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base32-latin1 first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha1-hex-utf16

    Call when an agent needs a sha1 digest of utf16le bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-hex-utf16 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha256-base64url-rawhex

    Call when an agent needs a sha256 digest of hex bytes, encoded as base64url. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64url-rawhex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64url-rawhex

    Call when an agent needs a sha3-224 digest of hex bytes, encoded as base64url. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64url-rawhex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-256-base64url-utf16

    Call when an agent needs a sha3-256 digest of utf16le bytes, encoded as base64url. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64url-utf16 first.

    BaseOther

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-256-hex

    Call when an agent needs a sha3-256 digest of text, encoded as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-hex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-384-base64-latin1

    Call when an agent needs a sha3-384 digest of latin1 bytes, encoded as base64. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64-latin1 first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-base64url

    Call when an agent needs a sha3-512 digest of text, encoded as base64url. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64url first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-hex-rawhex

    Call when an agent needs a sha3-512 digest of hex bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex-rawhex first.

    BaseDeveloper tools

    $0.003/ request

    2026-09-23

Evidence

as of 2026-10-10

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 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)

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.

0outside payers

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

window ended 2026-10-10

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 2026-10-10, 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
Base0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a381,1791 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
Median
$0.005
per request, as registeredas of
Highest
$0.02
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 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 2026-10-10. Appearing here is not an endorsement. Check an endpoint with the doctor.