Discover / allowance.schemasure.com

AllowanceGuard

□ No challenge detected

Decide whether to grant an ERC-20, NFT or Permit2 allowance before signing it. Send owner, token, spender and amount, or the unsigned approve, setApprovalForAll or Permit2 calldata. Returns allow, warn, block or unknown with the allowance already on chain, the requested scope and the rule behind it, whether this raises or lowers exposure, and whether the spender is a contract, upgradeable or denylisted. Returns unknown rather than guessing. Not a guarantee a spender is honest.

x402
Base
USDC

Listed price: $0.03
Challenge detected: 0 of the last 9 checks
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://allowance.schemasure.com/v1/guard/allowance
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

1 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.

POSThttps://allowance.schemasure.com/v1/guard/allowance$0.03Decide whether to grant an ERC-20, NFT or Permit2 allowance before signing it. Send owner, token, spender and amount, or the unsigned approve, setApprovalForAll or Permit2 calldata. Returns allow, warn, block or unknown with the allowance already on chain, the requested scope and the rule behind it, whether this raises or lowers exposure, and whether the spender is a contract, upgradeable or denylisted. Returns unknown rather than guessing. Not a guarantee a spender is honest.

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

Showing 1 of 1 listed endpoints.

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

Recent checks

28 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.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	No challenge detected	404	207ms
15 Oct, 08:20 UTC	No challenge detected	404	146ms
13 Oct, 20:45 UTC	No challenge detected	404	149ms
11 Oct, 19:34 UTC	No challenge detected	404	179ms
10 Oct, 03:32 UTC	No challenge detected	404	156ms
8 Oct, 21:32 UTC	No challenge detected	404	159ms
7 Oct, 15:42 UTC	No challenge detected	404	164ms
6 Oct, 15:31 UTC	No challenge detected	404	234ms
28 Sept, 05:02 UTC	No challenge detected	404	196ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 18:49 UTC, we detected no payment challenge.

What price is recorded for AllowanceGuard?

Its listed price is $0.03.

What payment terms does AllowanceGuard 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 AllowanceGuard listed?

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

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