Discover / signx402.com

x402-signature-service

□ No challenge detected

Send one PDF to one email recipient for simple electronic signature. The service emails the signer, tracks completion, and returns the completed signed PDF. Gives AI agents the missing capability to get human sign-off on contracts and NDAs: pay $0.50 USDC per request (x402 exact scheme on Base), poll a status URL with a one-time bearer token, download the signed document. SSRF-guarded document fetching, tokens stored as hashes, emails masked in logs.

Challenge detected
0 of the last check
Last checked
14 Oct, 22:08 UTC
In our index since
14 Oct 2026

Endpoint

curl -i https://signx402.com
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/signx402.com

Recent checks

14 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.14 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
14 Oct, 22:08 UTCNo challenge detected200435ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 14 Oct, 22:08 UTC, we detected no payment challenge.

What payment terms does x402-signature-service advertise?

The listing advertises x402, Base and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402-signature-service listed?

In x402-list.com. Superstables first indexed it on 14 Oct 2026.

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