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/extract-jsonld

    Call when an agent needs JSON-LD blocks extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/extract-jsonld first.

    BaseWeb data

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/feed-parse

    Call when an agent needs an RSS/Atom feed parsed into title plus up to 50 items (link, published, summary). SSRF-safe. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/feed-parse first.

    BaseWeb data

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/hex-decode

    Call when an agent needs text decoded with hex. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/hex-decode first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/hmac-ripemd160-base64url

    Call when an agent needs an HMAC-ripemd160 of text with a caller-supplied key, encoded as base64url. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/hmac-ripemd160-base64url first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

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

    Call when an agent needs an HMAC-sha1 of text with a caller-supplied key, encoded as base64url. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha1-base64url first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-22

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

    Call when an agent needs an HMAC-sha3-256 of text with a caller-supplied key, encoded as hex. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha3-256-hex first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

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

    Call when an agent needs an HMAC-sha3-384 of text with a caller-supplied key, encoded as base64. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha3-384-base64 first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/ical-vevent

    Call when an agent needs parsed VEVENT items from iCalendar text. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/ical-vevent first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

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

    Call when an agent needs whether a string is a valid uuid-v1. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v1 first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/json-jcs

    Call when an agent needs JSON rewritten with the jcs transform. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/json-jcs first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/lines-drop-last

    Call when an agent needs lines of text transformed with drop-last. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/lines-drop-last first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

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

    Call when an agent needs lines of text transformed with trim. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/lines-trim first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

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

    Call when an agent needs counts of byte 2-grams. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/ngram-byte-2 first.

    BaseOther

    $0.004/ request

    2026-09-23

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

    Call when an agent needs text normalized with strip-emoji. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/norm-strip-emoji first.

    BaseOther

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/norm-trim-lines

    Call when an agent needs text normalized with trim-lines. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/norm-trim-lines first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-atom

    Call when an agent needs application/atom+xml alternate hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-atom first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-caption

    Call when an agent needs caption text extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-caption first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-fb-app-id

    Call when an agent needs fb:app_id extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-fb-app-id first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-h5

    Call when an agent needs h5 text extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-h5 first.

    BaseWeb data

    $0.004/ request

    2026-09-23

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

    Call when an agent needs iframe src values extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-iframe-src first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-jsonld-event

    Call when an agent needs JSON-LD @type Event extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-jsonld-event first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-jsonld-offer

    Call when an agent needs JSON-LD @type Offer extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-jsonld-offer first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-jsonld-organization

    Call when an agent needs JSON-LD @type Organization extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-jsonld-organization first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-meta-description

    Call when an agent needs the meta description extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-meta-description first.

    BaseWeb data

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/profile-og-description

    Call when an agent needs og:description extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-og-description first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-option

    Call when an agent needs option text extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-option first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-rel-prev

    Call when an agent needs link rel=prev hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-prev first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-rel-stylesheet

    Call when an agent needs link rel=stylesheet hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-stylesheet first.

    BaseWeb data

    $0.004/ request

    2026-09-23

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

    Call when an agent needs track src values extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-track-src first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/profile-twitter-description

    Call when an agent needs twitter:description extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-twitter-description first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/redact-mac

    Call when an agent needs mac matches redacted in text. Nothing is stored. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/redact-mac first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-eth-address

    Call when an agent needs 0x-prefixed 20-byte hex extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/regex-eth-address first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-iso-week

    Call when an agent needs ISO week dates extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/regex-iso-week first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-md5

    Call when an agent needs MD5 hex digests extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/regex-md5 first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-uuid

    Call when an agent needs UUIDs extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/regex-uuid first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/security-headers

    Call when an agent needs CSP, HSTS, X-Frame-Options, Referrer-Policy, and Permissions-Policy audited on a public URL (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/security-headers first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/slug-dot-24-unicode

    Call when an agent needs a slug using ".", capped at 24 characters, keeping Unicode letters. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/slug-dot-24-unicode first.

    BaseCommerce

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-hyphen-24-unicode

    Call when an agent needs a slug using "-", capped at 24 characters, keeping Unicode letters. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/slug-hyphen-24-unicode first.

    BaseCommerce

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-plus-24-unicode

    Call when an agent needs a slug using "+", capped at 24 characters, keeping Unicode letters. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/slug-plus-24-unicode first.

    BaseCommerce

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-tilde-24-unicode

    Call when an agent needs a slug using "~", capped at 24 characters, keeping Unicode letters. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/slug-tilde-24-unicode first.

    BaseCommerce

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-underscore-24-unicode

    Call when an agent needs a slug using "_", capped at 24 characters, keeping Unicode letters. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/slug-underscore-24-unicode first.

    BaseCommerce

    $0.004/ request

    2026-09-23

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

    Call when an agent needs a TLS certificate summary for a public host or URL (private IPs blocked). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/ssl-check first.

    BaseIdentity

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/tls-expiry-7

    Call when an agent needs whether the port-443 certificate stays valid for at least 7 days. The threshold changes the ok_check bit. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/tls-expiry-7 first.

    BaseIdentity

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/tls-pubkey

    Call when an agent needs whether the port-443 key is RSA ≥2048 or EC ≥256 bits. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/tls-pubkey first.

    BaseIdentity

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/unicode-escape-decode

    Call when an agent needs text decoded with unicode-escape. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/unicode-escape-decode first.

    BaseDeveloper tools

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-aria-label

    Call when an agent needs text of elements with aria-label via //*[@aria-label] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-aria-label first.

    BaseWeb data

    $0.004/ request

    2026-09-23

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

    Call when an agent needs text of //article via //article from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-article first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-canonical-href

    Call when an agent needs href of link rel exactly canonical via //link[@rel='canonical']/@href from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-canonical-href first.

    BaseWeb data

    $0.004/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/xpath-figcaption

    Call when an agent needs text of //figcaption via //figcaption from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-figcaption first.

    BaseWeb data

    $0.004/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-icon-href

    Call when an agent needs href of link rel exactly icon via //link[@rel='icon']/@href from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-icon-href first.

    BaseWeb data

    $0.004/ 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.