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.

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/base-proxy$0.004Call when an agent needs whether a Base address is an upgradeable proxy, plus implementation and admin. Detects EIP-1967, UUPS, Transparent, and legacy OpenZeppelin slots, including USDC. Read-only. No spend. Send JSON {"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}. Exact $0.004 USDC on Base. Try unpaid POST /v1/sandbox/base-proxy first.
  • POST/fx-rates$0.002Call when an agent needs ECB daily FX rates, an as_of date, and an optional conversion. Send base (default EUR), optional quote such as USD, and optional amount. Returns rates and converted. Source is the Frankfurter ECB feed. Send JSON {"base":"EUR","quote":"USD","amount":10}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/fx-rates first.
  • POST/lines-sort-asc$0.007Call when an agent needs lines of text transformed with sort-asc. No network. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/lines-sort-asc first.
  • POST/tls-expiry-30$0.006Call when an agent needs whether the port-443 certificate stays valid for at least 30 days. The threshold changes the ok_check bit. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/tls-expiry-30 first.
  • POST/profile-mark$0.009Call when an agent needs mark text extracted from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/profile-mark first.
  • POST/check-iban-ae$0.003Call when an agent needs whether an IBAN is a mod-97-valid AE number of length 23. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ae first.
  • POST/check-cron-5$0.004Call when an agent needs whether a string is a 5-field cron expression. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-cron-5 first.
  • POST/dns-txt-spf$0.002Call when an agent needs apex TXT records that start with v=spf1. Fails when no SPF record exists. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-spf first.
  • POST/id-nanoid$0.001Call when an agent needs whether a string is a valid nanoid. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/id-nanoid first.
  • POST/redact-jwt$0.001Call when an agent needs jwt matches redacted in text. Nothing is stored. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/redact-jwt first.
  • POST/profile-rel-shortlink$0.01Call when an agent needs link rel=shortlink hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-shortlink first.
  • POST/base62-encode$0.009Call when an agent needs text encoded with base62. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/base62-encode first.
  • POST/dns-srv-carddavs$0.002Call when an agent needs SRV records at _carddavs._tcp.{hostname} for CardDAV over TLS. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-carddavs first.
  • POST/dns-txt-atproto$0.009Call when an agent needs TXT at _atproto. An empty answer is records: [] and is billed. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-atproto first.
  • POST/hmac-sha384-base64url$0.01Call when an agent needs an HMAC-sha384 of text with a caller-supplied key, encoded as base64url. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha384-base64url first.
  • POST/tls-hostname$0.01Call when an agent needs whether the port-443 certificate SAN or CN matches the requested host. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/tls-hostname first.
  • POST/regex-ipv4$0.01Call when an agent needs IPv4 addresses extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/regex-ipv4 first.
  • POST/digest-sha384-base64-latin1$0.001Call when an agent needs a sha384 digest of latin1 bytes, encoded as base64. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64-latin1 first.
  • POST/newline-trim$0.01Call when an agent needs newlines normalized to trim. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/newline-trim first.
  • POST/redact-iban$0.003Call when an agent needs iban matches redacted in text. Nothing is stored. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/redact-iban first.
  • POST/profile-iframe-src$0.004Call when an agent needs iframe src values extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-iframe-src first.
  • POST/security-headers$0.004Call when an agent needs a security-header audit (CSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy) with a 0–100 score for a public URL. Use it before sending users to a site. SSRF-safe. Send JSON {"url":"https://example.com/"}. Exact $0.004 USDC on Base. Try unpaid POST /v1/sandbox/security-headers first.
  • POST/profile-a-hreflang$0.002Call when an agent needs anchor hreflang values extracted from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/profile-a-hreflang first.
  • POST/check-iban-lt$0.005Call when an agent needs whether an IBAN is a mod-97-valid LT number of length 20. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-lt first.
  • POST/diff-chars$0.001Call when an agent needs a chars diff of two strings. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/diff-chars 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)ResultHTTPResponse
17 Oct, 18:25 UTCChallenge detected402390ms
16 Oct, 18:49 UTCChallenge detected402513ms
15 Oct, 14:11 UTCChallenge detected402509ms
14 Oct, 08:45 UTCChallenge detected402432ms
12 Oct, 10:53 UTCNo challenge detected200443ms
10 Oct, 15:44 UTCNo challenge detected200524ms
9 Oct, 09:34 UTCNo challenge detected200428ms
8 Oct, 03:32 UTCNo challenge detected200403ms
7 Oct, 03:32 UTCChallenge detected402551ms
4 Oct, 05:04 UTCNo challenge detected404443ms

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.

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