Discover / agentshelf.syntexa.ch

AgentShelf

■ Challenge detected

Call when an agent needs published and modified dates extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/article-dates first.

x402
Base
USDC
Other

Listed price: $0.004
Challenge detected: 4 of the last 9 checks
Median response: 511 ms
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://agentshelf.syntexa.ch/v1/article-dates
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

1,215 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://agentshelf.syntexa.ch/v1

POST/regex-semver-range$0.003Call when an agent needs caret or tilde semver ranges extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/regex-semver-range first.
POST/digest-sha3-256-base64url$0.005Call when an agent needs a sha3-256 digest of text, encoded as base64url. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64url first.
POST/check-iban-ch$0.007Call when an agent needs whether an IBAN is a mod-97-valid CH number of length 21. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ch first.
POST/profile-article-modified$0.01Call 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.
POST/xpath-icon-href$0.004Call 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.
POST/digest-blake2b512-base64url-latin1$0.01Call when an agent needs a blake2b512 digest of latin1 bytes, encoded as base64url. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64url-latin1 first.
POST/check-iban-ro$0.01Call when an agent needs whether an IBAN is a mod-97-valid RO number of length 24. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ro first.
POST/case-snake$0.007Call when an agent needs text rewritten with the snake case transform. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/case-snake first.
POST/dns-txt-mta-sts$0.004Call when an agent needs TXT at _mta-sts that starts with v=STSv1. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-mta-sts first.
POST/digest-shake256-hex$0.005Call when an agent needs a shake256 digest of text, encoded as hex. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-shake256-hex first.
POST/regex-ulid$0.005Call when an agent needs ULIDs extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/regex-ulid first.
POST/slug-tilde-24-unicode$0.004Call 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.
POST/check-date-duration$0.002Call 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.
POST/profile-icon-apple$0.008Call when an agent needs apple-touch-icon hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/profile-icon-apple first.
POST/digest-sha3-512-base32-rawhex$0.002Call 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.
POST/profile-dc-title$0.002Call when an agent needs dc.title extracted from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/profile-dc-title first.
POST/digest-sha384-base64url-latin1$0.004Call when an agent needs a sha384 digest of latin1 bytes, encoded as base64url. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64url-latin1 first.
POST/dns-txt-dmarc$0.003Call when an agent needs TXT at _dmarc that starts with v=DMARC1. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dmarc first.
POST/flesch-score$0.002Call 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.
POST/ngram-byte-2$0.004Call 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.
POST/check-email-plus-ok$0.009Call when an agent needs whether an email with a plus tag is syntactically allowed. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-email-plus-ok first.
POST/check-phone-nanp$0.002Call 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.
POST/check-vat-gb$0.006Call when an agent needs whether a GB VAT checksum is valid. No registry lookup. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-vat-gb first.
POST/regex-domain$0.002Call when an agent needs domain names extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/regex-domain first.
POST/check-iban-qa$0.003Call 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.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 1,215 listed endpoints. Next endpoints First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/agentshelf.syntexa.ch

Recent checks

4 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	Challenge detected	402	513ms
15 Oct, 14:11 UTC	Challenge detected	402	509ms
14 Oct, 08:45 UTC	Challenge detected	402	432ms
12 Oct, 10:53 UTC	No challenge detected	200	443ms
10 Oct, 15:44 UTC	No challenge detected	200	524ms
9 Oct, 09:34 UTC	No challenge detected	200	428ms
8 Oct, 03:32 UTC	No challenge detected	200	403ms
7 Oct, 03:32 UTC	Challenge detected	402	551ms
4 Oct, 05:04 UTC	No challenge detected	404	443ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for AgentShelf?

Its listed price is $0.004.

What payment terms does AgentShelf advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is AgentShelf listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

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