Discover / countersignatory.com

Countersignatory

□ No challenge detected

One screened human answers an approval, verification or judgment task: approve or reject, true or false, or a label, with a reason and the responder's disclosed identity. $1.25 at a 24-hour deadline. Answered by hand within the deadline or refunded in full automatically. Refused: CAPTCHAs, logins, third-party contact, medical, legal or financial advice.

x402
Base
USDC

Listed price: $1.25
Challenge detected: 0 of the last 6 checks
Last checked: 16 Oct, 13:59 UTC
In our index since: 8 Oct 2026

Endpoint

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

1 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.

POSThttps://countersignatory.com/v1/x402/check$1.25One screened human answers an approval, verification or judgment task: approve or reject, true or false, or a label, with a reason and the responder's disclosed identity. $1.25 at a 24-hour deadline. Answered by hand within the deadline or refunded in full automatically. Refused: CAPTCHAs, logins, third-party contact, medical, legal or financial advice.

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

Showing 1 of 1 listed endpoints.

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

Recent checks

8 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 6 checks

When (UTC)	Result	HTTP	Response
16 Oct, 13:59 UTC	No challenge detected	405	363ms
14 Oct, 23:56 UTC	No challenge detected	405	338ms
13 Oct, 10:39 UTC	No challenge detected	405	162ms
11 Oct, 10:02 UTC	No challenge detected	405	150ms
9 Oct, 21:31 UTC	No challenge detected	405	242ms
8 Oct, 18:39 UTC	No challenge detected	405	331ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 13:59 UTC, we detected no payment challenge.

What price is recorded for Countersignatory?

Its listed price is $1.25.

What payment terms does Countersignatory 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 Countersignatory listed?

In x402 Bazaar. Superstables first indexed it on 8 Oct 2026.

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