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Propelauth vs SuperTokens

Propelauth scores higher on the AgentReady, 59/100 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

Propelauth. PropelAuth provides end-to-end managed user authentication specializing in B2B use cases, built for AI-native companies with multi-tenant auth requirements

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

Where Propelauth is ahead

Propelauth passes 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, agent-compatible signup flow and fast time to first request. SuperTokens misses those.

And on operate, observable execution. SuperTokens misses it.

Where SuperTokens is ahead

SuperTokens passes clear canonical domain, llms.txt published and llms-full.txt / full agent docs, and Propelauth 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. Propelauth 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, 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 is whether an agent can find the product at all without being told it exists. SuperTokens leads 100 to 80. Propelauth misses clear canonical domain, llms.txt published, llms-full.txt / full agent docs; SuperTokens misses nothing.

Understand. Propelauth leads 38 to 31. Propelauth misses structured api reference, 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 is whether an agent can get a key and make its first successful call without a human in the loop. Propelauth leads 80 to 60. Propelauth misses no mandatory sales call, programmatic credential creation; SuperTokens misses self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request.

Operate. Propelauth leads 39 to 24. Propelauth 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

Propelauth starts at $0/month and has a free tier. SuperTokens starts at $0.02/MAU and has a free tier.

Signal by signal

Which to pick

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

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