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/slug-tilde-80-ascii$0.007Call when an agent needs a slug using "~", capped at 80 characters, ASCII-folded. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/slug-tilde-80-ascii first.
POST/dns-srv-caldav$0.002Call 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.
POST/unicode-escape-encode$0.003Call when an agent needs text encoded with unicode-escape. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/unicode-escape-encode first.
POST/profile-og-audio$0.01Call when an agent needs og:audio extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-og-audio first.
POST/check-iban-gl$0.006Call when an agent needs whether an IBAN is a mod-97-valid GL number of length 18. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-gl first.
POST/check-iban-de$0.01Call when an agent needs whether an IBAN is a mod-97-valid DE number of length 22. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-iban-de first.
POST/profile-button-text$0.008Call when an agent needs button text extracted from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/profile-button-text first.
POST/digest-sha384-base64$0.004Call when an agent needs a sha384 digest of text, encoded as base64. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64 first.
POST/check-iban-il$0.008Call when an agent needs whether an IBAN is a mod-97-valid IL number of length 23. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-iban-il first.
POST/dns-txt-domainkey$0.002Call 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.
POST/newline-lf$0.006Call when an agent needs newlines normalized to lf. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/newline-lf first.
POST/xpath-iframe-src$0.007Call when an agent needs src attributes of //iframe via //iframe/@src from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/xpath-iframe-src first.
POST/ngram-char-1$0.005Call when an agent needs counts of char 1-grams. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/ngram-char-1 first.
POST/dns-txt-dkim-k3$0.009Call when an agent needs TXT at k3._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-k3 first.
POST/digest-sha256-base64url$0.001Call when an agent needs a sha256 digest of text, encoded as base64url. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64url first.
POST/css-a-rel$0.005Call when an agent needs anchor rel tokens via a[rel] from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-a-rel first.
POST/css-source-src$0.003Call when an agent needs media source src values via source[src] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-source-src first.
POST/checksum-crc16-ccitt-hex$0.003Call when an agent needs a crc16-ccitt checksum of text as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-ccitt-hex first.
POST/check-vat-es$0.006Call when an agent needs whether a ES VAT checksum is valid. No registry lookup. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-vat-es first.
POST/digest-sha3-512-base64$0.002Call 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.
POST/xml-to-json$0.003Call when an agent needs XML converted to JSON (DTD and entities rejected). No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/xml-to-json first.
POST/check-ean-8$0.008Call when an agent needs whether an 8-digit EAN passes Luhn. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-ean-8 first.
POST/xpath-pre$0.009Call when an agent needs text of //pre via //pre from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/xpath-pre first.
POST/profile-icon-shortcut$0.01Call when an agent needs shortcut icon hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-icon-shortcut first.
POST/digest-sha384-base64-rawhex$0.002Call 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.

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.

Payment

Protocol: x402 · exact
Chain: Base
Asset: USDC
Amount: 4000 atomic USDC
Paid to: 0x1D61…5a38
Facilitator: cdp

From its payment challenge on 16 Oct 2026.

Check the seller's current payment challenge and authentication requirements before paying. A listing doesn't mean a service works with Superstables. To try a budget or a single purchase, see the services you can try on testnet.

Listed in

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