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Kinde vs Logto

Logto scores higher on the AgentReady, 58/100 against 54/100. They differ on 8 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Kinde. Modern auth and billing for engineers.

Logto. Logto is an open-source authentication and identity platform built for developers, offering auth, SSO, and RBAC for SaaS, AI agents, and B2B apps.

Where Kinde is ahead

Kinde passes mcp discoverable, and Logto does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: no mandatory sales call and mcp integration available. Logto misses those.

Where Logto is ahead

Logto passes structured api reference and 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.

What neither does

Both fail 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, structured, predictable output, 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. Kinde leads 100 to 87. Kinde misses nothing; Logto misses mcp discoverable.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Logto leads 54 to 31. Kinde misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Logto misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. Logto leads 50 to 48. Kinde misses agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, official typescript sdk, official python sdk, cli available; Logto misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available, mcp integration available.

Operate. Logto leads 39 to 35. Kinde misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Logto misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Kinde starts at $25/mo and has a free tier. Logto starts at $0/mo and has a free tier.

Signal by signal

Which to pick

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

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