Discover / tokencheck.402api.dev

402api Seller Check

■ Challenge detected

Call before paying an unfamiliar x402 endpoint, or to pick between providers. $0.02, usually <1 s plus one probe: live unpaid probe (status, latency, TLS, PAYMENT-REQUIRED decoded and sanity-checked), seller reputation from indexed on-chain USDC payments to its Base payTo (24 h/7 d count, distinct payers, total and median USD, top-payer share), Bazaar listing and price, and a looks legit/caution/avoid verdict citing each fact. Errors: 400/503 JSON {error}, not charged.

Listed price
$0.02
Challenge detected
5 of the last 5 checks
Median response
376 ms
Last checked
16 Oct, 23:40 UTC
In our index since
10 Oct 2026

Endpoint

curl -i https://tokencheck.402api.dev/v1/seller-check
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
2 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://tokencheck.402api.dev/v1

  • GET/token-check$0.02Call before buying, swapping into or accepting any Base ERC-20, to learn if you can sell it back. $0.02, ~1-3 s, measured on-chain: honeypot test (simulated buy then sell via the deepest pool: sell ok? round-trip loss vs fees), per-pool transfer tax from real recent swap receipts, USD liquidity per pool (Uniswap v2/v3, Aerodrome, Slipstream), sell quotes, and an ok/caution/avoid verdict citing each fact. Errors: 400/503 JSON {error}, not charged.
  • GET/seller-check$0.02Call before paying an unfamiliar x402 endpoint, or to pick between providers. $0.02, usually <1 s plus one probe: live unpaid probe (status, latency, TLS, PAYMENT-REQUIRED decoded and sanity-checked), seller reputation from indexed on-chain USDC payments to its Base payTo (24 h/7 d count, distinct payers, total and median USD, top-payer share), Bazaar listing and price, and a looks legit/caution/avoid verdict citing each fact. Errors: 400/503 JSON {error}, not charged.

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

Showing 2 of 2 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/tokencheck.402api.dev

Recent checks

10 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.16 Oct 2026
All 5 checks
When (UTC)ResultHTTPResponse
16 Oct, 23:40 UTCChallenge detected402376ms
15 Oct, 19:10 UTCChallenge detected402362ms
14 Oct, 12:00 UTCChallenge detected402368ms
12 Oct, 06:05 UTCChallenge detected402390ms
10 Oct, 12:38 UTCChallenge detected402848ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 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 402api Seller Check?

Its listed price is $0.02.

What payment terms does 402api Seller Check 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 402api Seller Check listed?

In x402 Bazaar. Superstables first indexed it on 10 Oct 2026.

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