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Frontegg vs Kinde

Frontegg scores higher on the AgentReady, 57/100 against 54/100. They differ on 9 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Frontegg. Frontegg secures every entry point into your SaaS app.

Kinde. Modern auth and billing for engineers.

Where Frontegg is ahead

Frontegg passes limits / constraints documented, and Kinde does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

It also holds adopt: agent-compatible signup flow, official typescript sdk and official python sdk. Kinde misses those.

And on operate, structured, predictable output. Kinde misses it.

Where Kinde is ahead

Kinde passes public docs discoverable and llms-full.txt / full agent docs, and Frontegg does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: authentication documented. Frontegg misses it.

And on adopt, no mandatory sales call. Frontegg misses it.

What neither does

Both fail structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, 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. Kinde leads 100 to 80. Frontegg misses public docs discoverable, llms-full.txt / full agent docs; Kinde misses nothing.

Understand. Both sit at 31/100 here. Frontegg misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented; Kinde misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Frontegg leads 65 to 48. Frontegg misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available; Kinde misses agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, official typescript sdk, official python sdk, cli available.

Operate. Frontegg leads 50 to 35. Frontegg misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Kinde misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Frontegg does not publish a machine-readable starting price and has a free tier. Kinde starts at $25/mo and has a free tier.

Signal by signal

Which to pick

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

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