Discover / x402-doctor.onrender.com

x402 Doctor

■ Challenge detected

Is this x402 endpoint safe to pay? Check it before your AI agent pays: go / caution / no_go, the recommended payment option, and why (payment would fail, over your budget, price above advertised, not HTTPS, unknown token). Never pays the endpoint. Cached 10 min.

x402
Base
Solana
USDC

Listed price: $0.001
Challenge detected: 10 of the last 10 checks
Median response: 140 ms
Last checked: 17 Oct, 07:50 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402-doctor.onrender.com/api/v1/preflight
# 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://x402-doctor.onrender.com/api/v1

GET/diagnose$0.01Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail: checks the 402 challenge, accepts[] (network, payTo, amount, asset), resource URL, Solana settlement readiness, which wallets and agents can pay, Bazaar/OpenAPI discovery and the browser paywall. Returns every check with a fix hint. Read-only: never pays.
GET/preflight$0.001Is this x402 endpoint safe to pay? Check it before your AI agent pays: go / caution / no_go, the recommended payment option, and why (payment would fail, over your budget, price above advertised, not HTTPS, unknown token). Never pays the endpoint. Cached 10 min.
GET/fix$0.05The fix for your x402 endpoint: diagnoses it, then returns per problem the concrete change as code for your stack (Express, Next.js, Hono or raw HTTP), filled in with your own payTo, amount, network and route.

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/x402-doctor.onrender.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)	Result	HTTP	Response
17 Oct, 07:50 UTC	Challenge detected	402	138ms
15 Oct, 23:42 UTC	Challenge detected	402	156ms
14 Oct, 19:26 UTC	Challenge detected	402	329ms
13 Oct, 00:46 UTC	Challenge detected	402	129ms
11 Oct, 06:02 UTC	Challenge detected	402	120ms
9 Oct, 18:38 UTC	Challenge detected	402	138ms
8 Oct, 15:35 UTC	Challenge detected	402	181ms
7 Oct, 12:43 UTC	Challenge detected	402	146ms
6 Oct, 15:31 UTC	Challenge detected	402	141ms
29 Sept, 05:02 UTC	Challenge detected	402	128ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 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 x402 Doctor?

Its listed price is $0.001.

What payment terms does x402 Doctor advertise?

The listing advertises x402, Base, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402 Doctor listed?

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

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