Discover / dictionary.openverbs.com

Antonyms of a word (opposites)

■ Challenge detected

Return the antonyms (opposites) of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200.

Listed price
$0.002
Challenge detected
10 of the last 10 checks
Median response
177 ms
Last checked
17 Oct, 09:26 UTC
In our index since
26 Sept 2026

Endpoint

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

  • POST/synonyms$0.002Return the synonyms of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200.
  • POST/define$0.002Look up the definitions of an English word. Returns one entry per sense with its part of speech, definition, example sentences and synonyms. Optionally filter by part of speech. An unknown word returns found:false with a 200.
  • POST/antonyms$0.002Return the antonyms (opposites) of an English word, aggregated across all its senses. Optionally filter by part of speech. An unknown word returns found:false with a 200.

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

Showing 3 of 3 listed endpoints.

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

Recent checks

29 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.17 Oct 2026
All 10 checks
When (UTC)ResultHTTPResponse
17 Oct, 09:26 UTCChallenge detected402500ms
16 Oct, 08:13 UTCChallenge detected402174ms
14 Oct, 21:46 UTCChallenge detected402188ms
13 Oct, 10:39 UTCChallenge detected402167ms
11 Oct, 10:02 UTCChallenge detected402174ms
9 Oct, 21:31 UTCChallenge detected402186ms
8 Oct, 18:39 UTCChallenge detected402238ms
7 Oct, 15:42 UTCChallenge detected402175ms
6 Oct, 15:34 UTCChallenge detected402161ms
29 Sept, 17:03 UTCChallenge detected402178ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 09:26 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 Antonyms of a word (opposites)?

Its listed price is $0.002.

What payment terms does Antonyms of a word (opposites) 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 Antonyms of a word (opposites) listed?

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

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