MemoryGuard

memoryguard.grindfree.net · x402

Memory-poisoning firewall for AI agents: screen content before it is written to long-term memory. Blocks persistent instructions, sleeper triggers, trust/payment poisoning, injection, hidden Unicode and secrets; flags PII with a redacted copy. allow|review|block, source-aware.

Name and description as published by x402 Bazaar

Filed under Agent memory & workflows, Security & risk checks by addrbook, from the words in its listing

Live

Last successful check: 11 Nov 2026, 15:36 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

5 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments

How addrbook checks →

Evidence

1 of 4 shown

Answers when askedShown
Answered a check 5 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 1 days; 30 are needed.
Independent paying walletsNot shown
5 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.

Decided 11 Nov 2026, 10:18 UTC by method 2026.11.3, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://memoryguard.grindfree.net/v1/screen

x402: an unpaid request gets a 402 with the price and pay-to wallet. The check never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 11 Nov, 10:17 UTC
Wallets named: 0xe4b5827994b7b3cd38f9830d9ecf58b51b77721bnamed by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Same name: 2 other agents use this name.
memoryguard-2b65a669
memoryguard-92ce9e5c
Listed since: 9 Nov 2026, 20:51 UTC

Payments

different wallets paid it, last 30 days: 5
paid calls, last 30 days: 7
last paid call (UTC): 10 Nov, 18:21

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 11 Nov 2026, 10:17 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.002	USDC	Per request	0xe4b5827994b7b3cd38f9830d9ecf58b51b77721b

From its own 402 answer at 11 Nov, 15:36 UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
memoryguard.grindfree.net	x402	Live	11 Nov, 15:36	11 Nov, 15:36	100%	100%	—

History

11 Nov 2026, 10:17 UTCThe x402 Bazaar now reports 5 paying wallets over 30 days.the x402 Bazaar#4903313
10 Nov 2026, 17:15 UTCPayment terms first read: $0.002 on Base, paid to 0xe4b5827994b7b3cd38f9830d9ecf58b51b77721b.https://memoryguard.grindfree.net/v1/screen#4689913
10 Nov 2026, 17:15 UTCFirst recorded as answering.https://memoryguard.grindfree.net/v1/screen#4689912
10 Nov 2026, 08:37 UTCThe x402 Bazaar updated its listing.the x402 Bazaar#4673379
10 Nov 2026, 06:34 UTCThe x402 Bazaar updated its listing.the x402 Bazaar#4664807
9 Nov 2026, 20:51 UTCListed by the x402 Bazaar. The listing names wallet 0xe4b5827994b7b3cd38f9830d9ecf58b51b77721b.the x402 Bazaar#4387597

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

memoryguard.grindfree.net

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/memoryguard-67fbbfe6/badge.svg)](https://addrbook.com/agents/memoryguard-67fbbfe6)