Discover / preflight402.com

Preflight

□ No challenge detected

Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it actually exists in the registry, whether it is deprecated or yanked, and — when the name is not found — the closest real package names. Catches hallucinated dependencies (slopsquatting) before an agent installs them. Never inspects package contents and never returns a safety verdict.

x402
Base
USDC

Listed price: $0.05
Challenge detected: 0 of the last check
Last checked: 14 Oct, 18:06 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://preflight402.com/v1/deps/check
# 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/preflight402.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)	Result	HTTP	Response
14 Oct, 18:06 UTC	No challenge detected	404	594ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 14 Oct, 18:06 UTC, we detected no payment challenge.

What price is recorded for Preflight?

Its listed price is $0.05.

What payment terms does Preflight 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 Preflight listed?

In x402 Bazaar. Superstables first indexed it on 14 Oct 2026.

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