x402engine.app

21 x402 endpoints assessed · worst score 15/100 · generated 2026-09-22T20:23:09.028Z

Some endpoints are safe to pay

Verdicts

pay 6 · caution 1 · avoid 14

Findings across this host

missing-trust-surface — 21 endpoints
no-www-authenticate — 21 endpoints
unlisted — 15 endpoints
no-x402-header — 14 endpoints
not-402 — 14 endpoints
thin-listing — 6 endpoints
evaluation-traffic — 4 endpoints
stale — 3 endpoints

Endpoints

method	resource	verdict	score	findings
`GET`	`https://x402engine.app/api/code/run`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/embeddings`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/image/nano-banana`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/ipfs/pin`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/deepseek`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/gemini-3.6-flash`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/gemini-flash`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/gemini-pro`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/gpt-6-astra`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/kimi`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/llm/perplexity`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/tts/elevenlabs`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/tts/lux`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/video/quality`	avoid	15	`not-402` `no-x402-header` `missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/web/screenshot`	caution	45	`missing-trust-surface` `no-www-authenticate` `unlisted`
`GET`	`https://x402engine.app/api/crypto/markets`	pay	70	`missing-trust-surface` `no-www-authenticate` `thin-listing` `stale` `evaluation-traffic`
`GET`	`https://x402engine.app/api/ens/reverse`	pay	70	`missing-trust-surface` `no-www-authenticate` `thin-listing` `stale` `evaluation-traffic`
`GET`	`https://x402engine.app/api/crypto/price`	pay	75	`missing-trust-surface` `no-www-authenticate` `thin-listing` `evaluation-traffic`
`GET`	`https://x402engine.app/api/crypto/trending`	pay	75	`missing-trust-surface` `no-www-authenticate` `thin-listing` `evaluation-traffic`
`GET`	`https://x402engine.app/api/travel/hotels`	pay	80	`missing-trust-surface` `no-www-authenticate` `thin-listing` `stale`
`GET`	`https://x402engine.app/api/travel/flights`	pay	85	`missing-trust-surface` `no-www-authenticate` `thin-listing`

Fix it

This page is free and shows what is wrong. The full audit adds severity, business impact and the exact fix for every finding, EIP-712 signed so you can hand it to whoever maintains the service.

POST https://enclave402.com/api/audit/host — $25.000 USDC via x402, body {"host":"x402engine.app"}

Verdicts come from a continuous probe of x402 resources. How grading works · our own settlement ledger and self-dealing share. If you believe a verdict is wrong, re-probe with /api/seller/vet.