On 13 October 2026 South Korea’s KB Kookmin Card said it signed a four-party memorandum of understanding with Japan’s SBI Holdings, the AI-security firm Everspin, and the SBI/Everspin joint venture SBI Everspin, to test AI-agent identity and delegated-authority verification for cross-border digital payments between South Korea and Japan.
What happened
The stated purpose is to build a security framework that verifies an AI agent’s identity and the authority a user has delegated to it before the agent acts — and to assess whether cross-border digital payment services built on that framework are commercially viable.
The verification mechanism is a platform the companies call the KYA (Know Your Agent) Trust Gateway. As described by the participants, it verifies an AI agent’s identity, checks the scope of the tasks a user delegated to it, and checks its service access permissions. SBI Everspin planned the platform and is developing the related technology with Everspin.
The testing is staged:
- The initial demonstration covers the identity-check procedures used when Japanese AI agents access services in South Korea. It is then to expand to transaction-authority management.
- KB Kookmin Card will examine whether AI agents can be integrated with its payment platform, KB Pay. The stated key issue is creating procedures to verify prior approval and transaction authority when an AI agent makes a payment on a user’s behalf.
- Separately, the partners will review stablecoin-based payments for Japanese tourists at South Korean merchants, including payment and settlement, cancellations and refunds, and procedures for responding to fraudulent transactions.
A KB Kookmin Card official said the agreement would help verify the foundation needed for AI agents to be used safely across services. An SBI Holdings official said the group would explore new service models combining its financial capabilities with the partners’ AI and security technology. An Everspin official cited AI-driven cyberattacks — naming ARTEX — and said the company had detected about 25 billion cyber threats across more than 150 financial institutions in South Korea and overseas.
The companies said they will decide on commercialisation and a wider scope of cooperation based on the demonstration results.
Why it matters for KYA
This is an agent-payments deal rather than a standards document, and it shows where the KYA problem actually bites first: an agent spending someone’s money. The interesting part is the shape of the control. The “Trust Gateway” is being positioned as a checkpoint that answers three KYA questions before an agent transacts — who the agent is, what the user delegated to it, and what services it may reach — and then gates a payment rail (KB Pay) on the answer.
Two things to watch:
- Delegated authority, not just authentication. The stated scope goes beyond “is this really an agent?” to “is this transaction within the authority the user granted?” That is the harder half of KYA, and it is exactly what the framework claims the initial demo will grow into.
- It is an MOU with a demonstration plan, not a shipped control. As announced, the parties will test identity checks and review payment flows; commercialisation depends on results. Nothing in the announcement says the Gateway is live or that KB Pay already accepts verified agents.
The practical read: cross-border agent payments now have a concrete testbed in which verifiable agent identity and scoped, user-delegated spending authority are treated as preconditions for the transaction, not an afterthought. That is the same control pattern standards work (IETF `agentproto`, X.509-based agent identity) is still drafting — being tried in production-shaped payments first.
Sources
- KB Kookmin Card announcement (13 October 2026), reported by: Chosun Biz, “KB Kookmin Card, Japan’s SBI and Everspin forge Korea-Japan digital payments tie-up” — biz.chosun.com.
- Bloomingbit (Suehyeon Lee), “KB Kookmin Card Signs AI Digital Payments Partnership With SBI Holdings, Everspin,” 13 October 2026 — en.bloomingbit.io/feed/news/122087.
- Crypto.news, “SBI, KB Card plan crypto payments for Japan tourists in South Korea,” 13 October 2026 — crypto.news.
- The Asia Business Daily (Asiae), “KB Kookmin Card Partners with Japan’s SBI Holdings…,” 13 October 2026 — asiae.co.kr.
Note: no standalone English-language press release was located; the details above reflect KB Kookmin Card’s announcement as reported by the outlets listed, which quote the participating companies.
Know Your Agent (KYA) explains agent identity, verification and accountability. This is an explainer, not legal or compliance advice — see our Sources & methodology. New to KYA? Start with What is Know Your Agent? and the glossary.