Concordium settlement is now in the official x402 repository, and every payment comes from an account verified at the protocol level.
Concordium has joined the x402 Foundation. Announced by Coinbase and Cloudflare in September 2025, it went fully operational under the Linux Foundation on 14 July 2026 and now counts more than 50 member organisations, among them Google, AWS, Mastercard, Stripe, and Visa. It governs the open standard that lets an AI agent pay for a resource over HTTP: the server answers a request with a 402 and a price, the client signs a stablecoin payment and resends, and the resource is released. No checkout page, no account, no API key.
What Membership Unlocks
The Concordium scheme specification now sits in the Foundation's own repository. Concordium is one of the standard supported networks, listed alongside Solana, Stellar, NEAR, and the EVM chains, rather than an integration tracking it from the outside.
It also puts Concordium in the working groups and the public repository where x402’s extensions are proposed and reviewed. The core standard is deliberately minimal: no accounts, no sign-ups, no personal information required. That is the right call for a payment rail, and it is explicitly not the end of the story. Identity and authorisation are the kind of capability the extension model is built to carry and that is the layer Concordium was built to provide.
And it is usable today. The @x402/concordium package was merged into the official x402 repository on 26 June 2026, with client, server, and facilitator implementations. Any developer can add Concordium settlement with a single install:
npm install @x402/concordium
"Open standards get stronger as more networks implement them. We welcome Concordium as a Member of the x402 Foundation and look forward to their participation as the standard develops."
Stephano Cetola, VP of Strategic Programs, The Linux Foundation
Identity That Arrives with the Payment
On most chains, the account behind an agent's payment is an anonymous key pair. On Concordium, identity is enforced at account creation, so the account an AI agent pays from is anchored to a verified real-world identity while no personal information is stored on-chain. The merchant sees a payment clear. It does not see a name, a document, or an address. That same guarantee is what the Verified by Concordium badge gives an agent on any supported chain, and it travels with the agent rather than sitting with one wallet.
Visa's Trusted Agent Protocol, Mastercard's Agentic Tokens, and Google's AP2 each solve a piece of this at the application layer. Concordium's contribution is different in kind, because the identity arrives with the payment rather than alongside it.
Accountability is honest here. Every account links to a verified human, but that link is encrypted, distributed across independent parties, and reachable only through a court-ordered legal process. Privacy is structurally protected, and accountability is structurally available.
What Is Already Running
The package implements x402's exact payment scheme across all three roles: the client that pays, the server that charges, and the facilitator that verifies and settles. It uses Sponsored Transactions, introduced with Protocol 10 in March 2026, so the agent signs a stablecoin transfer naming the facilitator as sponsor while the facilitator pays the network fee. The agent never needs to hold CCD for gas. Nine security rules bind that sponsorship to the exact recipient, amount, asset, and expiry, so the facilitator can never move funds it was not asked to move. Settlement is final when the block is final.
Payments settle in Protocol-Level Tokens, stablecoins issued at the protocol layer rather than through smart contracts. Every wallet holding one is tied to a verified identity, while no personal information is stored on-chain. The token knows who is holding it, without knowing who they are.
An agent can now pay for a resource from an account verified at the protocol level. When funds need to be held until a counterparty delivers, that is where Protocol-Level Locks come in. More on that soon.
Start building: Add Concordium settlement with the integration docs, give your agent a verified identity in the Agent Registry, and join the builders in Discord.