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/profile-jsonld-organization$0.004Call when an agent needs JSON-LD @type Organization extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-jsonld-organization first.
POST/profile-jsonld$0.001Call when an agent needs every JSON-LD block as JSON text extracted from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/profile-jsonld first.
POST/profile-twitter-image-alt$0.005Call when an agent needs twitter:image:alt extracted from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/profile-twitter-image-alt first.
POST/lines-number$0.003Call when an agent needs lines of text transformed with number. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/lines-number first.
POST/extract-images$0.003Call when an agent needs image URLs extracted from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/extract-images first.
POST/base58check-p2sh-decode$0.006Call when an agent needs text decoded with base58check-p2sh. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/base58check-p2sh-decode first.
POST/base-erc20-allowance$0.002Call when an agent needs ERC-20 allowance(owner, spender) on Base, raw and human when decimals() is readable. Send token, owner, and spender. Read-only. No spend. Send JSON {"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","owner":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","spender":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/base-erc20-allowance first.
POST/digest-sha1-base32-utf16$0.002Call when an agent needs a sha1 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha1-base32-utf16 first.
POST/dns-txt-dkim-google$0.009Call when an agent needs TXT at google._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-google first.
POST/check-luhn$0.002Call when an agent needs whether the digits in a string pass Luhn. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-luhn first.
POST/digest-sha512-base64url-latin1$0.006Call when an agent needs a sha512 digest of latin1 bytes, encoded as base64url. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64url-latin1 first.
POST/check-iban-ps$0.002Call when an agent needs whether an IBAN is a mod-97-valid PS number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ps first.
POST/digest-sha3-384-base64url-rawhex$0.007Call when an agent needs a sha3-384 digest of hex bytes, encoded as base64url. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64url-rawhex first.
POST/css-link-stylesheet$0.002Call when an agent needs stylesheet hrefs via link[rel='stylesheet'] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-link-stylesheet first.
POST/digest-sha512-256-base64-latin1$0.007Call when an agent needs a sha512-256 digest of latin1 bytes, encoded as base64. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64-latin1 first.
POST/profile-nav-links$0.001Call when an agent needs anchor hrefs inside nav extracted from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/profile-nav-links first.
POST/digest-sha512-256-base64$0.006Call when an agent needs a sha512-256 digest of text, encoded as base64. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64 first.
POST/dns-srv-pop3s$0.008Call when an agent needs SRV records at _pop3s._tcp.{hostname} for POP3 over TLS. The caller sends the registrable domain, not the underscored name. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-pop3s first.
POST/digest-sha256-hex$0.009Call when an agent needs a sha256 digest of text, encoded as hex. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-hex first.
POST/eth-erc20-balance$0.001Call when an agent needs an Ethereum mainnet ERC-20 token balance_raw and human balance for token and owner. Example token is Circle USDC. decimals() scales the human balance. Read-only on eip155:1. No spend. Send JSON {"token":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","owner":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/eth-erc20-balance first.
POST/check-iban-do$0.001Call when an agent needs whether an IBAN is a mod-97-valid DO number of length 28. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-do first.
POST/dns-srv-presence$0.005Call when an agent needs SRV records at _presence._tcp.{hostname} for XMPP presence. The caller sends the registrable domain, not the underscored name. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-presence first.
POST/digest-md5-base64-rawhex$0.006Call when an agent needs a md5 digest of hex bytes, encoded as base64. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-base64-rawhex first.
POST/profile-canonical$0.001Call when an agent needs the canonical link href extracted from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/profile-canonical first.
POST/digest-sha256-hex-rawhex$0.007Call when an agent needs a sha256 digest of hex bytes, encoded as hex. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-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.

Something wrong on this page? Tell us.