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: 5 of the last 10 checks
Median response: 509 ms
Last checked: 17 Oct, 18:25 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/dns-srv-kerberos$0.002Call when an agent needs SRV records at _kerberos._tcp.{hostname} for Kerberos. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-kerberos first.
POST/color-rgb-to-hsl$0.007Call when an agent needs a color converted with rgb-to-hsl. No network. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/color-rgb-to-hsl first.
POST/css-video-src$0.01Call when an agent needs video sources via video[src] from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/css-video-src first.
POST/dns-txt-dkim-selector2$0.001Call when an agent needs TXT at selector2._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-selector2 first.
POST/check-iban$0.009Call when an agent needs whether an IBAN matches a known country length and mod-97. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban first.
POST/css-main$0.004Call when an agent needs main text via main from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-main first.
POST/regex-iso-week$0.004Call 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.
POST/morse-decode$0.008Call when an agent needs text decoded with morse. No network and no LLM. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/morse-decode first.
POST/check-iban-tl$0.009Call when an agent needs whether an IBAN is a mod-97-valid TL number of length 23. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-tl first.
POST/check-date-unix-s$0.003Call when an agent needs whether a string is 10-digit Unix seconds. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-date-unix-s first.
POST/check-url-http$0.005Call when an agent needs whether a URL uses the http scheme. No fetch. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-url-http first.
POST/hmac-md5-hex$0.009Call when an agent needs an HMAC-md5 of text with a caller-supplied key, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/hmac-md5-hex first.
POST/dns-srv-ldap$0.007Call when an agent needs SRV records at _ldap._tcp.{hostname} for LDAP. The caller sends the registrable domain, not the underscored name. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-ldap first.
POST/case-dot$0.001Call when an agent needs text rewritten with the dot case transform. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/case-dot first.
POST/digest-ripemd160-hex-latin1$0.008Call when an agent needs a ripemd160 digest of latin1 bytes, encoded as hex. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/digest-ripemd160-hex-latin1 first.
POST/digest-sha256-hex-latin1$0.006Call when an agent needs a sha256 digest of latin1 bytes, encoded as hex. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-hex-latin1 first.
POST/dns-srv-stun-tcp$0.007Call when an agent needs SRV records at _stun._tcp.{hostname} for STUN over TCP. The caller sends the registrable domain, not the underscored name. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-stun-tcp first.
POST/cron-next-5-5$0.004Call when an agent needs the next 5 UTC times for a 5-field cron expression. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-5 first.
POST/hmac-blake2b512-base64$0.01Call when an agent needs an HMAC-blake2b512 of text with a caller-supplied key, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-blake2b512-base64 first.
POST/check-iban-be$0.006Call when an agent needs whether an IBAN is a mod-97-valid BE number of length 16. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-be first.
POST/base-erc20-balance$0.003Call when an agent needs an ERC-20 balance_raw and human balance for token and owner on Base. Example token is Circle USDC. decimals() scales the human balance. Distinct from base-balance (native ETH). Read-only. No spend. Send JSON {"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","owner":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-balance first.
POST/check-card-amex$0.009Call when an agent needs whether a number passes Luhn and matches amex. Nothing is stored. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-card-amex first.
POST/digest-sha3-384-base64-latin1$0.003Call when an agent needs a sha3-384 digest of latin1 bytes, encoded as base64. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64-latin1 first.
POST/css-input-name$0.001Call when an agent needs input names via input[name] from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/css-input-name first.
POST/digest-md5-hex-rawhex$0.003Call when an agent needs a md5 digest of hex bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-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.17 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
17 Oct, 18:25 UTC	Challenge detected	402	390ms
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 17 Oct, 18:25 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 17 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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