Discover / presign-guard.fizzl.eu

presign-guard

■ Challenge detected

Is this wallet sanctioned? Screens any chain's address (EVM, Solana, Tron, Bitcoin, XRP Ledger, Algorand) against the OFAC SDN list, synced from the US Treasury, plus theft, phishing and mixer reports for EVM addresses. Green/orange/red with the SDN entry (name, programs) when listed. For sellers screening who pays them and agents checking who they pay. Bulk: 100 checks for $0.80 via /v1/credits.

Listed price
$0.01
Challenge detected
5 of the last 9 checks
Median response
380 ms
Last checked
17 Oct, 07:50 UTC
In our index since
28 Sept 2026

Endpoint

curl -i https://presign-guard.fizzl.eu/v1/screen
# 402 Payment Required: pay with an x402 client (USDC on Algorand),
# then send the same request again with the payment attached.
5 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://presign-guard.fizzl.eu/v1

  • GET/screenNo price listedIs this wallet sanctioned? Screens any chain's address (EVM, Solana, Tron, Bitcoin, XRP Ledger, Algorand) against the OFAC SDN list, synced from the US Treasury, plus theft, phishing and mixer reports for EVM addresses. Green/orange/red with the SDN entry (name, programs) when listed. For sellers screening who pays them and agents checking who they pay. Bulk: 100 checks for $0.80 via /v1/credits.
  • POST/checkNo price listedIs this transaction, approval or signature safe to sign? Check it before your AI agent or wallet signs it: pre-sign verdict (green/orange/red + reason codes) for EVM transactions, token approvals and Permit/Permit2/EIP-3009/Seaport signatures. Screens the spender or recipient wallet for OFAC sanctions and scam, phishing or theft reports, and flags unlimited allowances, plain-wallet spenders and risky tokens. Bulk: 100 checks for $0.80 via /v1/credits.
  • POST/check/explainNo price listedIs this transaction, approval or signature safe to sign, explained for a person? The same pre-sign verdict as /v1/check (green/orange/red + reason codes) plus a short plain-language explanation in English or Dutch, for an agent to show its user before asking for approval. Bulk: 100 checks for $0.80 via /v1/credits.
  • GET/tokenNo price listedIs this token safe to buy, or a honeypot or rug pull? Checks a Solana or EVM token before you buy, hold or accept it (mint or freeze authority still active, LP not locked, buy/sell tax, low liquidity, brand-new token, concentrated holders) and answers green/orange/red with a grade (SAFE/CAUTION/RISKY/AVOID), the reasons, a one-line summary and market data. Bulk: 100 checks for $0.80 via /v1/credits.
  • GET/approvalsNo price listedWallet approval audit (green/orange/red, grade, one-line summary): every open ERC-20 allowance of an EVM wallet with who the spender is (flagged, plain wallet, unverified, unlimited) and which ones to revoke. Bulk: 100 checks for $0.80 via /v1/credits.

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

Showing 5 of 5 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/presign-guard.fizzl.eu

Recent checks

3 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.17 Oct 2026
All 9 checks
When (UTC)ResultHTTPResponse
17 Oct, 07:50 UTCChallenge detected402380ms
15 Oct, 23:42 UTCChallenge detected402451ms
14 Oct, 19:26 UTCChallenge detected402371ms
12 Oct, 22:31 UTCChallenge detected402442ms
11 Oct, 00:15 UTCNo challenge detected404159ms
9 Oct, 15:32 UTCNo challenge detected404166ms
8 Oct, 09:33 UTCNo challenge detected404207ms
7 Oct, 03:32 UTCNo challenge detected404529ms
3 Oct, 17:05 UTCChallenge detected402149ms

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 presign-guard?

Its listed price is $0.01.

What payment terms does presign-guard advertise?

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

Where is presign-guard listed?

In x402 Bazaar. Superstables first indexed it on 28 Sept 2026.

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