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/base64-decode$0.01Call when an agent needs text decoded with base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/base64-decode first.
POST/checksum-fletcher16-hex$0.005Call when an agent needs a fletcher16 checksum of text as hex. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/checksum-fletcher16-hex first.
POST/slug-hyphen-40-ascii$0.005Call when an agent needs a slug using "-", capped at 40 characters, ASCII-folded. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/slug-hyphen-40-ascii first.
POST/css-img-data-src$0.009Call when an agent needs lazy image data-src values via img[data-src] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-img-data-src first.
POST/xpath-a-href$0.009Call when an agent needs href attributes of //a via //a/@href from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/xpath-a-href first.
POST/digest-sha384-base64url-rawhex$0.005Call when an agent needs a sha384 digest of hex bytes, encoded as base64url. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64url-rawhex first.
POST/css-code$0.008Call when an agent needs code text via code from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-code first.
POST/lines-reverse$0.002Call when an agent needs lines of text transformed with reverse. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/lines-reverse first.
POST/regex-iso-date$0.01Call when an agent needs ISO dates 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-iso-date first.
POST/newline-crlf$0.007Call when an agent needs newlines normalized to crlf. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/newline-crlf first.
POST/check-iban-sa$0.005Call when an agent needs whether an IBAN is a mod-97-valid SA number of length 24. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sa first.
POST/norm-nfkc-casefold$0.001Call when an agent needs text normalized with nfkc-casefold. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/norm-nfkc-casefold first.
POST/duration-hms$0.003Call when an agent needs a hms duration converted to seconds. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/duration-hms first.
POST/dns-caa-issuewild$0.004Call when an agent needs CAA records whose tag is issuewild. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/dns-caa-issuewild first.
POST/chunk-text$0.002Call when an agent needs text chunked by characters or tokens with overlap. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/chunk-text first.
POST/base-total-supply$0.001Call when an agent needs ERC-20 totalSupply for one Base token, raw and human when decimals() is readable. Send token (example Circle USDC). Read-only eth_call on eip155:8453. No spend. Send JSON {"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/base-total-supply first.
POST/lines-unique$0.01Call when an agent needs lines of text transformed with unique. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/lines-unique first.
POST/eth-block$0.001Call when an agent needs an Ethereum mainnet block header and transaction hashes by number or tag latest, finalized, or safe. The hash list is capped at 100. Read-only eth_getBlockByNumber on eip155:1. No spend. Send JSON {"block":"latest"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/eth-block first.
POST/xpath-a-title$0.009Call when an agent needs title attributes of //a via //a/@title from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/xpath-a-title first.
POST/css-a-text$0.002Call when an agent needs anchor text via a from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-a-text first.
POST/digest-sha3-512-hex-utf16$0.001Call when an agent needs a sha3-512 digest of utf16le bytes, encoded as hex. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex-utf16 first.
POST/regex-time$0.002Call when an agent needs HH:MM times extracted from text, capped at 20 matches. An empty match list is billed. No network. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/regex-time first.
POST/hmac-sha256-base64url$0.007Call when an agent needs an HMAC-sha256 of text with a caller-supplied key, encoded as base64url. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/hmac-sha256-base64url first.
POST/check-semver-tilde$0.003Call when an agent needs whether a string is a tilde semver range. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-semver-tilde first.
POST/slug-dot-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-dot-80-ascii 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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