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Payment credentials turned AI agents from spectators into actors

VGS strategy chief Terry Angelos tells a16z's Alex Rampell that credentials give agents arms and legs, but open card-network standards must settle who is liable when agents err.

Terry AngelosAlex RampellVGSStripeAmazonWalmartPaymentsFintechAgentic AIE-commerce
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Payment credentials turned AI agents from spectators into actors

Recorded 15 October 2026 · 50 min

Terry Angelos, chief strategy officer and board member of VGS, argues that AI agents became far more useful in roughly 3 months because they gained payment credentials, moving from recommending purchases to completing them. VGS vaults credentials for about a third of e-commerce by GMV, so he speaks from the plumbing layer where agents, wallets and merchants meet.

The tension is trust. Early agentic checkout relied on proprietary workarounds that disrupted chargebacks and merchant relationships, while open card-network standards are only beginning to replace them. Alex Rampell of Andreessen Horowitz, Angelos's former TrialPay co-founder, presses on liability, merchants' incentive to block agents, and which early consumer gains will survive scale.

  1. Agents gain arms and legs — ▶ 11:56

    Angelos says agents went from spectators to actors in about 3 months because payment credentials let them execute tasks rather than suggest them. His example: an agent found piano teachers for his 7-year-old, asked questions, checked schedules around soccer 3 days a week, and booked a first lesson, where earlier ChatGPT only returned recommendations. The mechanism is utility. An agent that completes a task is worth more than one that adds work to the user's list. The evidence is a personal anecdote, not measured adoption data.

  2. Why merchants outsource vaulting — ▶ 4:51

    Card networks now issue domain-bound network tokens instead of merchants storing 16-digit PANs, which limits damage if a token leaks. Complexity compounds: about a third of cards turn over each year (roughly 25% from 4-year expiries, plus about 5% from events like Capital One moving cards to Discover or fraud). Merchants with $1 billion in GMV typically run 3-5 processors, multiplying vaulting and update work. VGS positions itself as neutral infrastructure that handles tokens and updates across processors, so stale-card failures should not occur.

  3. Wallet wars: reach versus scale — ▶ 13:43

    Agents want wallets with many consumers and broad merchant reach. Angelos cites Stripe Link at about 300 million consumers and 1 million merchants, Shop Pay at a similar consumer base with about 1.7 million merchants, and PayPal at over 400 million accounts and about 30 million merchants. The contest echoes earlier wallet battles over being the default credential. Angelos recalls issuers paying tens of millions of dollars to be top-of-wallet at Uber and Airbnb. Agent wallets add an abstraction layer above that fight.

  4. Stripe as the AOL — ▶ 20:05

    Angelos calls Stripe the AOL of agentic commerce: a walled garden that works. When Link had no Walmart connection, Stripe bought his outdoor lights with a one-time Visa virtual card, then charged him separately. The costs show up afterward. His bank would see only a Stripe transaction, so chargebacks break. One tester's Amex call reportedly ended at a Stripe engineer's cell phone. Walmart's follow-up Walmart Plus offer also failed because the card on file was the one-time card.

  5. Agentic tokens preserve chargebacks — ▶ 24:04

    Card networks' agentic tokens let a wallet hand the agent a credential tied to the user's own card, with a verified agent and a spending cap such as $100. The token is a new 16-digit number, so the merchant charges the customer's actual card. That preserves follow-on sales and chargeback rules, which Rampell calls the trust mechanism that makes buyers willing to purchase. Angelos says volume was zero 3 months ago and VGS, which he calls the largest provisioner, now does a few million tokens weekly. These are company-reported figures.

  6. Vaults go multiplayer — ▶ 28:09

    Angelos argues that vaults are shifting from single player to multiplayer, which raises their value. Multiple processors already made VGS's vault serve Chase, Stripe, Adyen, Braintree and Razorpay at once. Agents extend that: a frontier lab that vaults cards for subscriptions can now share the same credential with an agent under open standards. Rampell likens 1Password moving from personal storage to access for multiple parties. VGS reports about 10 billion credentials, and Angelos frames brokering among parties as its next layer.

  7. Three tests, one unsolved — ▶ 29:40

    Rampell frames a transaction as three checks: is the card valid, is the user the owner, and is the user of sound mind. Angelos says the first is solved, and the second is addressed by registering agents with Visa, Mastercard or Amex and passing context such as hotel amount. The third, whether the agent made an error like wrong dates, has no dispute mechanism. Rampell warns merchants will not accept delegation as an excuse, recalling friendly fraud, and suggests competing agents might assume liability. Angelos expects agents to take on some responsibility.

  8. Merchants split on agents — ▶ 35:31

    Rampell notes Amazon recently blocked an agent and attributes it to advertising economics: an agent has no eyeballs to sell. Angelos sees three postures: fear at Amazon, possible greed at Walmart given its inventory and last-mile delivery, and no choice for Shopify's small merchants who need a new channel. He compares it to open banking, where Plaid-style access settled into bank-controlled, tokenized APIs, perhaps with fees. Merchants may also deploy their own commissioned agents, like a Best Buy salesperson. Angelos expects consumers to win but cannot say how.

  9. Overhyped savings, underhyped demand — ▶ 41:01

    Angelos doubts agents will trigger savings-deposit runs by chasing yield. Friction persists: he keeps a Chase account because its bill pay has more integrations, even though Mercury pays more. The underhyped effect, he argues, is unmonetized demand. An always-on agent in his cycling group chat would buy tires whenever a friend recommends them, and agents could also cancel forgotten subscriptions. His premise that human desires are infinite is an assertion, not evidence, and he concedes the always-on effect remains unexperienced.

  10. Asymmetry won't last — ▶ 43:40

    Rampell argues many early agent wins, such as saved money or secured reservations, depend on asymmetry: few users and counterparties unaware of agents. Scale invites adaptation, for example companies demanding to speak with a human. Angelos adds that agents probing the edges of terms, like a flight priced just inside an upgrade threshold, will strain rewards programs, since agents would pick cards purely for points. He says any breakage-based model will weaken and need new terms, though he is unsure whether that is better or worse.

The open question. When a registered, verified agent follows a valid instruction but gets the details wrong, such as the wrong hotel dates, who absorbs the loss? Card networks can authenticate the card and the agent, but Angelos concedes that the third question, whether the agent was of sound mind, has no dispute mechanism yet. Whether agents, wallets or consumers end up carrying that liability will shape whether merchants accept agent traffic at all.

Watch the full video at https://www.youtube.com/watch?v=q8cb1XL9sXA.

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