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/css-form-action$0.009Call when an agent needs form actions via form[action] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-form-action first.
POST/digest-sha256-hex-utf16$0.005Call when an agent needs a sha256 digest of utf16le bytes, encoded as hex. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-hex-utf16 first.
POST/digest-sha1-base64url-utf16$0.009Call when an agent needs a sha1 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base64url-utf16 first.
POST/profile-video-poster$0.003Call when an agent needs video poster values extracted from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/profile-video-poster first.
POST/favicon-meta$0.002Call when an agent needs favicon and apple-touch icons extracted from a public page or HTML (SSRF-safe). Send JSON {"html":"<link rel=\"icon\" href=\"https://example.com/favicon.ico\" sizes=\"32x32\">"}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/favicon-meta first.
POST/hmac-sha384-hex$0.008Call when an agent needs an HMAC-sha384 of text with a caller-supplied key, encoded as hex. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha384-hex first.
POST/digest-sha3-512-base64url-rawhex$0.009Call when an agent needs a sha3-512 digest of hex bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64url-rawhex first.
POST/dns-cname$0.01Call when an agent needs CNAME targets only. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-cname first.
POST/digest-sha3-384-base32$0.01Call when an agent needs a sha3-384 digest of text, encoded as base32. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base32 first.
POST/dns-srv-mqtt$0.009Call when an agent needs SRV records at _mqtt._tcp.{hostname} for MQTT. The caller sends the registrable domain, not the underscored name. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-mqtt first.
POST/dns-txt-dkim-zendesk$0.004Call when an agent needs TXT at zendesk._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-zendesk first.
POST/check-card-diners$0.002Call when an agent needs whether a number passes Luhn and matches diners. Nothing is stored. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-card-diners first.
POST/digest-sha512-256-hex-latin1$0.004Call when an agent needs a sha512-256 digest of latin1 bytes, encoded as hex. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-hex-latin1 first.
POST/css-manifest$0.006Call when an agent needs web manifest hrefs via link[rel='manifest'] from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/css-manifest first.
POST/checksum-crc16-dec$0.002Call when an agent needs a crc16 checksum of text as dec. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/checksum-crc16-dec first.
POST/hmac-md5-base64$0.01Call when an agent needs an HMAC-md5 of text with a caller-supplied key, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-md5-base64 first.
POST/cron-next-5-1$0.002Call when an agent needs the next 1 UTC time for a 5-field cron expression. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-1 first.
POST/digest-md5-base64-latin1$0.005Call when an agent needs a md5 digest of latin1 bytes, encoded as base64. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base64-latin1 first.
POST/newline-no-final$0.002Call when an agent needs newlines normalized to no-final. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/newline-no-final first.
POST/slug-hyphen-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-hyphen-160-unicode first.
POST/profile-video-src$0.009Call when an agent needs video src values extracted from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/profile-video-src first.
POST/check-vat-pt$0.007Call when an agent needs whether a PT VAT checksum is valid. No registry lookup. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-vat-pt first.
POST/json-repair$0.002Call when an agent needs broken JSON repaired deterministically (markdown fences, smart quotes, trailing commas, single quotes, unquoted keys), plus the transforms applied. Use it on model or scraped text that is almost JSON. No LLM. Send JSON {"text":"```json\n{\"a\":1,}\n```"}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/json-repair first.
POST/id-uuid-v5$0.007Call when an agent needs whether a string is a valid uuid-v5. No network. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v5 first.
POST/xpath-script-src$0.005Call when an agent needs src attributes of //script via //script/@src from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/xpath-script-src 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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