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Adyen vs Checkout.com

Adyen scores higher on the AgentReady, 55/100 against 45/100. They differ on 4 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Adyen. One platform for payments, data, and financial products.

Checkout.com. Checkout.com is a payment processing company that provides high-performance payment solutions for businesses.

Where Adyen is ahead

Adyen passes clear product positioning and llms-full.txt / full agent docs, and Checkout.com does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: agent-compatible signup flow. Checkout.com misses it.

And on operate, structured, predictable output. Checkout.com misses it.

What neither does

Both fail structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, self-service signup, no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover is whether an agent can find the product at all without being told it exists. Adyen leads 100 to 80. Adyen misses nothing; Checkout.com misses clear product positioning, llms-full.txt / full agent docs.

Understand. Both sit at 23/100 here. Adyen misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Checkout.com misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Adyen leads 50 to 40. Adyen misses self-service signup, no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available; Checkout.com misses self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, cli available.

Operate. Adyen leads 47 to 35. Adyen misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Checkout.com misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Adyen starts at $0.13 with no free tier. Checkout.com does not publish one and has a free tier.

Signal by signal

Which to pick

Adyen clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Adyen and Checkout.com. Alternatives to each: Adyen, Checkout.com.

An agent can fetch this as data: POST /v1/compare {"slugs": ["adyen", "checkout"]}