Agents don't shop. They call APIs.
The Personal Agent Protocol makes agent access a merchant decision: identity, permissions, routing. Why digital keys get there first, where cdk.bot fits, and why it isn't a PAP implementation.
Blog
Notes on agent-native commerce, x402, and what we're building.
Price transparency for agents: how CDK Bot prices compare to G2A, Eneba and Kinguin
CDK Bot puts its competitors' live prices inside its own API response. Every product carries a marketplace_offers array with the current G2A, Eneba and Kinguin price in USD, so an agent can compare the whole market in one call instead of scraping keyshops. Why an agent-native merchant surfaces rivals' prices, plus the full-catalog numbers (all 27,000+ titles with live offers) on how it actually stacks up.
The agentic commerce stack for digital goods: x402 + MCP + USDC
For an autonomous agent to buy a digital good end-to-end, it needs three layers: a payment protocol it can complete (x402), a settlement asset that's instant and final (USDC on Base), and a tool interface it can read (MCP / agent-native API). Why each one exists, which human-web default it replaces, and how the layers fit together.
How an AI agent buys a Steam key with USDC (step by step)
The precise reference. A wallet-native agent can buy a Steam key in a single gasless call, using a signed X-PAYMENT header that a facilitator settles. Or it can run the explicit x402 two-step: POST /purchase for a 402 with the USDC amount and a quote_id, send USDC on Base, then POST /purchase again with the tx_hash. Exact contract, chain, confirmations, and quote lock included.
Can you trust an agent to buy on its own? The security model behind autonomous game-key purchases
Yes, and not on faith: every step is independently verifiable and bounded. Payment is confirmed onchain with no trust required, the buyer is cryptographically pinned to the order, a session token blocks front-running, and the worst case is a few wasted dollars. The security model, mechanism by mechanism.
Agents won't buy pizza first — they'll buy game keys
Everyone pictures an AI agent ordering dinner or booking a flight. Those are the last things it'll buy unattended, with no human tapping confirm, not the first. The first market for fully autonomous agent commerce is digital goods, and game keys are the cleanest consumer example. Here's the framework.
Building a game-buying AI agent in 200 lines with x402 + MCP
How to let an autonomous AI agent buy any of 40,000+ video game keys, gift cards, and subscriptions, paying onchain in stablecoins and other crypto (USDC, USDT, EURC) with no human in the loop. The fast path is a single gasless one-shot call, and the two-step flow is the universal fallback. Code, flow, and the pitfalls we hit.