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Logto vs SuperTokens

Logto scores higher on the AgentReady, 58/100 against 54/100. They differ on 10 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

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.

SuperTokens. Open source user authentication platform that helps developers build fast, maintain control, and reduce costs.

Where Logto is ahead

Logto passes structured api reference and limits / constraints documented, and SuperTokens 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: self-service signup and agent-compatible signup flow. SuperTokens misses those.

And on operate, observable execution. SuperTokens misses it.

Where SuperTokens is ahead

SuperTokens 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, copyable quickstart, cli available and mcp integration available. Logto 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, 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. SuperTokens leads 100 to 87. Logto misses mcp discoverable; SuperTokens misses nothing.

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

Adopt. SuperTokens leads 60 to 50. Logto misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available, mcp integration available; SuperTokens misses self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request.

Operate. Logto leads 39 to 24. Logto misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; SuperTokens misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

Logto starts at $0/mo and has a free tier. SuperTokens starts at $0.02/MAU and has a free tier.

Signal by signal

Which to pick

Signal counts are level here, so fit and price decide it. Full profiles: Logto and SuperTokens. Alternatives to each: Logto, SuperTokens.

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