Sato Hub
x402 merchant

agentshelf.syntexa.ch

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
CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
Developer tools544Web data277Other178Identity147Commerce25Media6Market data3AI models1Onchain data1
First seen
2026-10-05 · last seen 2026-10-11

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/digest-blake2s256-base64

    Call when an agent needs a blake2s256 digest of text, encoded as base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64-rawhex

    Call when an agent needs a blake2s256 digest of hex bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64-rawhex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-md5-base32-utf16

    Call when an agent needs a md5 digest of utf16le bytes, encoded as base32. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base32-utf16 first.

    BaseOther

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha1-base64url-latin1

    Call when an agent needs a sha1 digest of latin1 bytes, encoded as base64url. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base64url-latin1 first.

    BaseOther

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha224-base32

    Call when an agent needs a sha224 digest of text, encoded as base32. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha224-base32 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha256-base64

    Call when an agent needs a sha256 digest of text, encoded as base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha256-base64-rawhex

    Call when an agent needs a sha256 digest of hex bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64-rawhex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64

    Call when an agent needs a sha3-224 digest of text, encoded as base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64-rawhex

    Call when an agent needs a sha3-224 digest of hex bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64-rawhex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-256-base64-utf16

    Call when an agent needs a sha3-256 digest of utf16le bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64-utf16 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-384-base32

    Call when an agent needs a sha3-384 digest of text, encoded as base32. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base32 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/digest-sha3-384-base32-rawhex

    Call when an agent needs a sha3-384 digest of hex bytes, encoded as base32. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base32-rawhex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha3-512-base32-utf16

    Call when an agent needs a sha3-512 digest of utf16le bytes, encoded as base32. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base32-utf16 first.

    BaseOther

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha384-base64-utf16

    Call when an agent needs a sha384 digest of utf16le bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64-utf16 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-224-base32-utf16

    Call when an agent needs a sha512-224 digest of utf16le bytes, encoded as base32. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base32-utf16 first.

    BaseOther

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/digest-sha512-256-base64url-latin1

    Call when an agent needs a sha512-256 digest of latin1 bytes, encoded as base64url. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64url-latin1 first.

    BaseOther

    $0.01/ request

    2026-09-23

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

    Call when an agent needs a sha512 digest of text, encoded as base32. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base32 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

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

    Call when an agent needs a sha512 digest of hex bytes, encoded as base32. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base32-rawhex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

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

    Call when an agent needs a sha512 digest of latin1 bytes, encoded as hex. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-hex-latin1 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

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

    Call when an agent needs CNAME targets only. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-cname first.

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _amqp._tcp.{hostname} for AMQP. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-amqp first.

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _autodiscover._tcp.{hostname} for Autodiscover. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-autodis…

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _dns-sd._udp.{hostname} for DNS-SD. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-dns-sd first.

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _http._tcp.{hostname} for HTTP. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-http first.

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _mumble._tcp.{hostname} for Mumble. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-mumble first.

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _openpgpkey._tcp.{hostname} for OpenPGP key. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-openpgp fi…

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs SRV records at _submissions._tcp.{hostname} for implicit TLS submission. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-s…

    BaseIdentity

    $0.01/ request

    2026-09-23

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

    Call when an agent needs TXT at cm._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-cm first.

    BaseIdentity

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-txt-dkim-selector1

    Call when an agent needs TXT at selector1._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-selector1 first.

    BaseIdentity

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/dns-txt-dkim-selector3

    Call when an agent needs TXT at selector3._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-selector3 first.

    BaseIdentity

    $0.01/ request

    2026-09-22

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

    Call when an agent needs TXT at _dnslink that contains dnslink=. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dnslink first.

    BaseIdentity

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/hmac-blake2b512-base64

    Call when an agent needs an HMAC-blake2b512 of text with a caller-supplied key, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-blake2b512-base64 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

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

    Call when an agent needs an HMAC-md5 of text with a caller-supplied key, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-md5-base64 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/hmac-sha224-hex

    Call when an agent needs an HMAC-sha224 of text with a caller-supplied key, encoded as hex. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha224-hex first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/hmac-sha384-base64url

    Call when an agent needs an HMAC-sha384 of text with a caller-supplied key, encoded as base64url. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha384-base64url first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/html-numeric-decode

    Call when an agent needs text decoded with html-numeric. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/html-numeric-decode first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/id-ulid

    Call when an agent needs whether a string is a valid ulid. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/id-ulid first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/json-pretty-4

    Call when an agent needs JSON rewritten with the pretty-4 transform. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/json-pretty-4 first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/jwt-payload

    Call when an agent needs a decoded JWT payload with no signature check. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/jwt-payload first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/lines-unique

    Call when an agent needs lines of text transformed with unique. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/lines-unique first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/lines-uppercase

    Call when an agent needs lines of text transformed with uppercase. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/lines-uppercase first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/link-status

    Call when an agent needs HEAD status for up to 20 public URLs (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/link-status first.

    BaseWeb data

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/newline-trim

    Call when an agent needs newlines normalized to trim. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/newline-trim first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/ngram-word-2

    Call when an agent needs counts of word 2-grams. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/ngram-word-2 first.

    BaseOther

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/norm-nfkc

    Call when an agent needs text normalized with nfkc. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/norm-nfkc first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/norm-strip-bidi

    Call when an agent needs text normalized with strip-bidi. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/norm-strip-bidi first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/page-audit

    Call when an agent needs a structured SEO/tech audit of a public URL: HTTPS, status, title, meta, robots, canonical, JSON-LD, H1 count, load hints, score 0–100, issues[]. SSRF-safe. Exact $0.01 USDC. Prefer unpaid POST …

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/pdf-to-md

    Call when an agent needs text extracted from a public PDF URL (SSRF-safe) or pdf_base64 (8MB cap) as markdown. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/pdf-to-md first.

    BaseDeveloper tools

    $0.01/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/profile-article-modified

    Call when an agent needs article:modified_time extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-article-modified first.

    BaseWeb data

    $0.01/ request

    2026-09-23

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

    Call when an agent needs audio src values extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-audio-src first.

    BaseWeb data

    $0.01/ request

    2026-09-23

Evidence

as of 2026-10-11

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 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 2026-10-11

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

ChainSeller walletEndpointsAnswers 402x402-style payments
Base0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a381,1821 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 2026-10-11. Appearing here is not an endorsement. Check an endpoint with the doctor.