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/html-sanitize$0.003Call when an agent needs HTML sanitized to an allowlist of tags and safe URLs. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/html-sanitize first.
POST/slug-plus-160-unicode$0.002Call when an agent needs a slug using "+", capped at 160 characters, keeping Unicode letters. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/slug-plus-160-unicode first.
POST/norm-collapse-space$0.003Call when an agent needs text normalized with collapse-space. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/norm-collapse-space first.
POST/profile-aria-label$0.007Call when an agent needs aria-label values extracted from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/profile-aria-label first.
POST/digest-md5-hex-latin1$0.002Call when an agent needs a md5 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-latin1 first.
POST/hmac-sha3-512-hex$0.006Call when an agent needs an HMAC-sha3-512 of text with a caller-supplied key, encoded as hex. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha3-512-hex first.
POST/diff-text$0.002Call when an agent needs a unified diff of two strings. No network. Input size is capped. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/diff-text first.
POST/check-iban-fr$0.002Call 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.
POST/base-portfolio$0.005Call when an agent needs native ETH plus up to 20 ERC-20 balances for one Base address. Send address and an optional tokens list; omit tokens for Circle USDC. Multicall3 batches the reads. Read-only. No spend. Send JSON {"address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","tokens":["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"]}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-portfolio first.
POST/digest-sha3-512-base64-latin1$0.005Call when an agent needs a sha3-512 digest of latin1 bytes, encoded as base64. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64-latin1 first.
POST/profile-rel-preload$0.007Call when an agent needs link rel=preload hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-preload first.
POST/tls-expiry-60$0.007Call when an agent needs whether the port-443 certificate stays valid for at least 60 days. The threshold changes the ok_check bit. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/tls-expiry-60 first.
POST/digest-sha3-256-hex-rawhex$0.009Call when an agent needs a sha3-256 digest of hex bytes, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-hex-rawhex first.
POST/digest-sha512-256-hex-utf16$0.003Call when an agent needs a sha512-256 digest of utf16le bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-hex-utf16 first.
POST/base-balance$0.003Call when an agent needs Base mainnet ETH and USDC balances, tx_count, and a rough x402 affordability hint for one address. Send address as EIP-55 or all-lowercase 0x. Read-only eth_getBalance and USDC balanceOf on eip155:8453. No private key and no spend. Send JSON {"address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/base-balance first.
POST/check-card-jcb$0.001Call when an agent needs whether a number passes Luhn and matches jcb. Nothing is stored. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-card-jcb first.
POST/digest-blake2b512-base32-utf16$0.002Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base32-utf16 first.
POST/slug-dot-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-dot-40-unicode first.
POST/check-vat-ro$0.002Call 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.
POST/profile-aside$0.008Call when an agent needs aside text extracted from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/profile-aside first.
POST/regex-eth-address$0.004Call when an agent needs 0x-prefixed 20-byte hex 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-eth-address first.
POST/dns-txt-dkim-key1$0.001Call when an agent needs TXT at key1._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-key1 first.
POST/dns-srv-carddav$0.003Call when an agent needs SRV records at _carddav._tcp.{hostname} for CardDAV. The caller sends the registrable domain, not the underscored name. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-carddav first.
POST/slug-hyphen-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-hyphen-80-ascii first.
POST/color-rgb-to-hex$0.004Call when an agent needs a color converted with rgb-to-hex. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/color-rgb-to-hex 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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