Discover / dev-reference.x402tookit.com

Dev Reference

■ Challenge detected

Parse a Cache-Control value, explain each directive, compute freshness and flag conflicts or leaks.

Listed price
$0.02
Challenge detected
1 of the last check
Median response
242 ms
Last checked
21 Oct, 00:26 UTC
In our index since
21 Oct 2026

Endpoint

curl -i https://dev-reference.x402tookit.com/cache-control-explain
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
12 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://dev-reference.x402tookit.com

  • GET/http-headerNo price listedExplain an HTTP header: request or response, purpose, security notes, and its IANA registration status.
  • GET/http-methodNo price listedWhether an HTTP method is safe and idempotent (IANA registry), what it is for, and request-body semantics.
  • GET/http-status-classNo price listedAll registered HTTP status codes in a class (1xx to 5xx) with names and one-line meanings.
  • GET/datetime-convertNo price listedConvert a timestamp (RFC 3339, ISO 8601, HTTP-date or epoch seconds) to RFC 3339, HTTP-date, RFC 5322, basic ISO and epoch.
  • GET/http-statusNo price listedHTTP status code meaning, typical cause, client action and cacheability, from the IANA registry and RFC 9110.
  • GET/unicode-charNo price listedUnicode character lookup by code point or character: name, block, category, UTF-8/UTF-16 bytes and HTML/JS/CSS escapes.
  • GET/datetime-validateNo price listedValidate an ISO 8601 or RFC 3339 date, time, timestamp, duration or interval, and say which standard it satisfies.
  • GET/csp-explainNo price listedParse a Content-Security-Policy header value, explain each directive and flag risky settings like unsafe-inline.
  • GET/port-lookupNo price listedIANA service name and common use for a TCP/UDP port (about 130 well-known ports), plus the port range class.
  • GET/mime-typeNo price listedMedia type (MIME) for a file extension, or extensions for a media type, with IANA registration status.
  • GET/dns-record-typeNo price listedDNS record type lookup by name (MX) or number (15): IANA meaning, RFC reference and typical use.
  • GET/cache-control-explainNo price listedParse a Cache-Control value, explain each directive, compute freshness and flag conflicts or leaks.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 12 of 12 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/dev-reference.x402tookit.com

Recent checks

21 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.21 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
21 Oct, 00:26 UTCChallenge detected402242ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 00:26 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 Dev Reference?

Its listed price is $0.02.

What payment terms does Dev Reference advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Dev Reference listed?

In x402 Bazaar. Superstables first indexed it on 21 Oct 2026.

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