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.

1,193 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/css-link-href$0.009Call when an agent needs link hrefs via link[href] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-link-href first.
POST/check-iban-eg$0.002Call 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.
POST/profile-img-src$0.007Call when an agent needs img src values extracted from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/profile-img-src first.
POST/check-iban-hr$0.002Call 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.
POST/digest-sha3-224-base32$0.002Call when an agent needs a sha3-224 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base32 first.
POST/slug-plus-40-unicode$0.006Call when an agent needs a slug using "+", capped at 40 characters, keeping Unicode letters. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/slug-plus-40-unicode first.
POST/reverse-dns$0.003Call when an agent needs reverse DNS PTR hostnames for a public IPv4 or IPv6 address. Use it to map an IP back to a hostname. Private addresses are rejected. Send JSON {"ip":"8.8.8.8"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/reverse-dns first.
POST/digest-sha3-224-base64-rawhex$0.01Call 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.
POST/digest-shake256-base64url$0.007Call when an agent needs a shake256 digest of text, encoded as base64url. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-shake256-base64url first.
POST/digest-blake2b512-base64$0.006Call when an agent needs a blake2b512 digest of text, encoded as base64. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64 first.
POST/check-vat-it$0.005Call when an agent needs whether a IT VAT checksum is valid. No registry lookup. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-vat-it first.
POST/redact-mac$0.004Call when an agent needs mac matches redacted in text. Nothing is stored. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/redact-mac first.
POST/cron-next-5-8$0.005Call when an agent needs the next 8 UTC times for a 5-field cron expression. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-8 first.
POST/hmac-sha224-base64url$0.002Call when an agent needs an HMAC-sha224 of text with a caller-supplied key, encoded as base64url. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha224-base64url first.
POST/check-upc-a$0.009Call when an agent needs whether a 12-digit UPC-A passes Luhn. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-upc-a first.
POST/digest-sha1-base64url-rawhex$0.001Call when an agent needs a sha1 digest of hex bytes, encoded as base64url. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base64url-rawhex first.
POST/digest-sha3-384-base32-latin1$0.009Call when an agent needs a sha3-384 digest of latin1 bytes, encoded as base32. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base32-latin1 first.
POST/dns-txt-adsp$0.007Call when an agent needs TXT at _adsp._domainkey. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-adsp first.
POST/check-jwt-shape$0.005Call when an agent needs whether a token has a JWT header shape. No signature check. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-jwt-shape first.
POST/dns-srv-http$0.01Call 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.
POST/tls-expiry-7$0.004Call 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.
POST/digest-sha512-224-base64$0.002Call when an agent needs a sha512-224 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base64 first.
POST/redact-url$0.01Call when an agent needs url matches redacted in text. Nothing is stored. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/redact-url first.
POST/digest-sha256-base32$0.002Call when an agent needs a sha256 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base32 first.
POST/check-iban-va$0.003Call when an agent needs whether an IBAN is a mod-97-valid VA number of length 22. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-va first.

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

Showing 25 of 1,193 listed endpoints. Next 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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