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/cron-next-5-1

    Call when an agent needs the next 1 UTC time for a 5-field cron expression. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-1 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/cron-next-6-12

    Call when an agent needs the next 12 UTC times for a 6-field cron expression. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/cron-next-6-12 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs anchor text via a from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-a-text first.

    BaseWeb data

    $0.002/ request

    2026-09-22

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

    Call when an agent needs audio sources via audio[src] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-audio-src first.

    BaseWeb data

    $0.002/ request

    2026-09-23

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

    Call when an agent needs blank-target anchor hrefs via a[target='_blank'] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-external first.

    BaseWeb data

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-h3

    Call when an agent needs h3 text via h3 from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-h3 first.

    BaseWeb data

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/css-input-type

    Call when an agent needs input types via input[type] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-input-type first.

    BaseWeb data

    $0.002/ request

    2026-09-23

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

    Call when an agent needs stylesheet hrefs via link[rel='stylesheet'] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-link-stylesheet first.

    BaseWeb data

    $0.002/ request

    2026-09-23

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

    Call when an agent needs inline quote text via q from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-q first.

    BaseWeb data

    $0.002/ request

    2026-09-23

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

    Call when an agent needs summary text via summary from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-summary first.

    BaseWeb data

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/csv-to-json

    Call when an agent needs a CSV table converted to a JSON array of objects. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/csv-to-json first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/diff-text

    Call when an agent needs a unified diff of two strings. No network. Input size is capped. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/diff-text first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-blake2b512-base32-utf16

    Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base32-utf16 first.

    BaseOther

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-blake2s256-base32

    Call when an agent needs a blake2s256 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base32 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-latin1

    Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as base64url. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64url-latin1 first.

    BaseOther

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-md5-base32-rawhex

    Call when an agent needs a md5 digest of hex bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base32-rawhex first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-md5-base64

    Call when an agent needs a md5 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base64 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-md5-hex-latin1

    Call when an agent needs a md5 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-latin1 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha1-base32-utf16

    Call when an agent needs a sha1 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base32-utf16 first.

    BaseOther

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha256-base32

    Call when an agent needs a sha256 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base32 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha256-base64url-latin1

    Call when an agent needs a sha256 digest of latin1 bytes, encoded as base64url. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64url-latin1 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-224-base32

    Call when an agent needs a sha3-224 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base32 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64url-latin1

    Call when an agent needs a sha3-224 digest of latin1 bytes, encoded as base64url. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64url-latin1 first.

    BaseOther

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-256-base64-rawhex

    Call when an agent needs a sha3-256 digest of hex bytes, encoded as base64. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64-rawhex first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-384-base64-utf16

    Call when an agent needs a sha3-384 digest of utf16le bytes, encoded as base64. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64-utf16 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-base32-rawhex

    Call when an agent needs a sha3-512 digest of hex bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base32-rawhex first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-base64

    Call when an agent needs a sha3-512 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-hex-latin1

    Call when an agent needs a sha3-512 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex-latin1 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha384-base64-rawhex

    Call when an agent needs a sha384 digest of hex bytes, encoded as base64. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64-rawhex first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-224-base32-rawhex

    Call when an agent needs a sha512-224 digest of hex bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base32-rawhex first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-224-base64

    Call when an agent needs a sha512-224 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base64 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha512-224-hex-latin1

    Call when an agent needs a sha512-224 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-hex-latin1 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-256-base32-utf16

    Call when an agent needs a sha512-256 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base32-utf16 first.

    BaseOther

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-base64-utf16

    Call when an agent needs a sha512 digest of utf16le bytes, encoded as base64. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64-utf16 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-shake128-base64

    Call when an agent needs a shake128 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-shake128-base64 first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-soa

    Call when an agent needs SOA as ns, hostmaster, serial, refresh, retry, expire, minimum. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-soa first.

    BaseIdentity

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-srv-caldav

    Call when an agent needs SRV records at _caldav._tcp.{hostname} for CalDAV. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-caldav first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-srv-carddavs

    Call when an agent needs SRV records at _carddavs._tcp.{hostname} for CardDAV over TLS. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-cardda…

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-srv-daap

    Call when an agent needs SRV records at _daap._tcp.{hostname} for DAAP. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-daap first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-srv-ftp

    Call when an agent needs SRV records at _ftp._tcp.{hostname} for FTP. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-ftp first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-srv-ipps

    Call when an agent needs SRV records at _ipps._tcp.{hostname} for IPPS. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-ipps first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-srv-kerberos

    Call when an agent needs SRV records at _kerberos._tcp.{hostname} for Kerberos. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-kerberos first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-txt-dkim-dkim

    Call when an agent needs TXT at dkim._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-dkim first.

    BaseIdentity

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-txt-dkim-key2

    Call when an agent needs TXT at key2._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-key2 first.

    BaseIdentity

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-txt-dkim-s1

    Call when an agent needs TXT at s1._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-s1 first.

    BaseIdentity

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-txt-domainkey

    Call when an agent needs TXT at _domainkey, unfiltered. Selector SKUs use selector._domainkey. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-domainkey first.

    BaseIdentity

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/dns-txt-spf

    Call when an agent needs apex TXT records that start with v=spf1. Fails when no SPF record exists. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-spf first.

    BaseIdentity

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/duration-iso

    Call when an agent needs a iso duration converted to seconds. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/duration-iso first.

    BaseMedia

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/favicon-meta

    Call when an agent needs favicon and apple-touch icons extracted from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/favicon-meta first.

    BaseMedia

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/flesch-score

    Call when an agent needs a Flesch reading-ease score for text. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/flesch-score first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

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.