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/punycode-encode

    Call when an agent needs text encoded with punycode. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/punycode-encode first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

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

    Call when an agent needs jwt matches redacted in text. Nothing is stored. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/redact-jwt first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

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

    Call when an agent needs arXiv identifiers extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/regex-arxiv first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-ipv6

    Call when an agent needs IPv6 addresses extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/regex-ipv6 first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/regex-markdown-link

    Call when an agent needs markdown links extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/regex-markdown-link first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

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

    Call when an agent needs E.164-shaped phones extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/regex-phone first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-dot-160-ascii

    Call when an agent needs a slug using ".", capped at 160 characters, ASCII-folded. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/slug-dot-160-ascii first.

    BaseOther

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-hyphen-160-ascii

    Call when an agent needs a slug using "-", capped at 160 characters, ASCII-folded. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/slug-hyphen-160-ascii first.

    BaseOther

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-plus-160-ascii

    Call when an agent needs a slug using "+", capped at 160 characters, ASCII-folded. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/slug-plus-160-ascii first.

    BaseOther

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-tilde-160-ascii

    Call when an agent needs a slug using "~", capped at 160 characters, ASCII-folded. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/slug-tilde-160-ascii first.

    BaseOther

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/slug-underscore-160-ascii

    Call when an agent needs a slug using "_", capped at 160 characters, ASCII-folded. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/slug-underscore-160-ascii first.

    BaseOther

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/strip-utm

    Call when an agent needs tracking query parameters stripped from a URL. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/strip-utm first.

    BaseWeb data

    $0.001/ request

    2026-09-22

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

    Call when an agent needs heuristic text stats: chars, words, sentences, reading_time_min, lang_hint. No LLM and no network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/text-stats first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/tls-self-signed

    Call when an agent needs whether the port-443 issuer DN equals the subject DN. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/tls-self-signed first.

    BaseIdentity

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/toc-md

    Call when an agent needs a markdown heading table of contents. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/toc-md first.

    BaseWeb data

    $0.001/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/token-count

    Call when an agent needs a heuristic token count for text (not a model tokenizer). No LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/token-count first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-22

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

    Call when an agent needs a User-Agent string parsed into browser, OS, and device. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/ua-parse first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/url-parts

    Call when an agent needs a URL split into scheme, host, path, query, and hash. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/url-parts first.

    BaseWeb data

    $0.001/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/uuid-name-v5-dns

    Call when an agent needs a deterministic UUID v5 in the dns namespace. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/uuid-name-v5-dns first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-23

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

    Call when an agent needs text of //address via //address from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-address first.

    BaseWeb data

    $0.001/ request

    2026-09-23

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

    Call when an agent needs text of //h4 via //h4 from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-h4 first.

    BaseWeb data

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-img-alt

    Call when an agent needs alt attributes of //img via //img/@alt from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-img-alt first.

    BaseWeb data

    $0.001/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/xpath-img-srcset

    Call when an agent needs srcset attributes of //img via //img/@srcset from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-img-srcset first.

    BaseWeb data

    $0.001/ request

    2026-09-23

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

    Call when an agent needs type attributes of //input via //input/@type from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-input-type first.

    BaseWeb data

    $0.001/ request

    2026-09-23

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

    Call when an agent needs text of //label via //label from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-label first.

    BaseWeb data

    $0.001/ request

    2026-09-23

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

    Call when an agent needs YAML converted to JSON. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/yaml-to-json first.

    BaseDeveloper tools

    $0.001/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/base45-decode

    Call when an agent needs text decoded with base45. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/base45-decode first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/base58-decode

    Call when an agent needs text decoded with base58. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/base58-decode first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

  • https://agentshelf.syntexa.ch/v1/base64url-decode

    Call when an agent needs text decoded with base64url. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/base64url-decode first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs text rewritten with the path case transform. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/case-path first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs text rewritten with the upper case transform. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/case-upper first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a number passes Luhn and matches diners. Nothing is stored. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-card-diners first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a string is an ISO-8601 duration. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-date-duration first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid AD number of length 24. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ad first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid EG number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-eg first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid FR number of length 27. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-fr first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid HR number of length 21. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-hr first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid KZ number of length 20. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-kz first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid PS number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ps first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid SE number of length 24. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-se first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether an IBAN is a mod-97-valid UA number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ua first.

    BaseOther

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether the digits in a string pass Luhn. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-luhn first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a string is a dash-separated MAC address. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-mac-dash first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a phone number matches NANP +1 rules. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-phone-nanp first.

    BaseIdentity

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a string is a caret semver range. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-semver-caret first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a RO VAT checksum is valid. No registry lookup. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-vat-ro first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs whether a SE VAT checksum is valid. No registry lookup. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-vat-se first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs a crc16 checksum of text as dec. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-dec first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-23

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

    Call when an agent needs text chunked by characters or tokens with overlap. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/chunk-text first.

    BaseDeveloper tools

    $0.002/ request

    2026-09-22

  • https://agentshelf.syntexa.ch/v1/cron-describe

    Call when an agent needs a cron expression explained in English. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/cron-describe 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.