Discover / numeral.openverbs.com

Number to words

■ Challenge detected

Spell an integer out in English words, e.g. 123 → "one hundred twenty-three". Negatives are prefixed with "minus".

Listed price
$0.002
Challenge detected
9 of the last 9 checks
Median response
197 ms
Last checked
16 Oct, 18:49 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://numeral.openverbs.com/v1/words
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
4 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://numeral.openverbs.com/v1

  • POST/radix$0.002Convert an integer between numeral bases 2–36 (binary, octal, hex, base36, …). Arbitrary size via BigInt; digits are case-insensitive and a leading minus is allowed.
  • POST/roman$0.002Convert between integers (1–3999) and Roman numerals in either direction — a digit string is encoded to Roman, a Roman numeral is decoded to an integer. Non-canonical numerals (IIII, IC) are rejected.
  • POST/ordinal$0.002Format a non-negative integer as an ordinal — both the suffixed form (21st) and the ordinal words (twenty-first).
  • POST/words$0.002Spell an integer out in English words, e.g. 123 → "one hundred twenty-three". Negatives are prefixed with "minus".

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

Showing 4 of 4 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/numeral.openverbs.com

Recent checks

30 Sept 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.16 Oct 2026
All 9 checks
When (UTC)ResultHTTPResponse
16 Oct, 18:49 UTCChallenge detected402202ms
15 Oct, 11:37 UTCChallenge detected402177ms
14 Oct, 00:19 UTCChallenge detected402199ms
12 Oct, 00:34 UTCChallenge detected402160ms
10 Oct, 10:04 UTCChallenge detected402197ms
9 Oct, 03:33 UTCChallenge detected402235ms
7 Oct, 21:31 UTCChallenge detected402195ms
6 Oct, 18:37 UTCChallenge detected402209ms
30 Sept, 17:04 UTCChallenge detected402176ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 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 Number to words?

Its listed price is $0.002.

What payment terms does Number to words 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 Number to words listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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