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Permit.io vs SuperTokens

Permit.io scores higher on the AgentReady, 79/100 against 54/100. They differ on 12 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Permit.io. Permissions for the AI era.

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

Where Permit.io is ahead

Permit.io passes structured api reference, openapi / spec quality, request examples provided, response examples provided and errors and status codes 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: agent-compatible signup flow and programmatic credential creation. SuperTokens misses those.

And on operate, structured, predictable output, machine-readable errors and observable execution. SuperTokens misses those.

Where SuperTokens is ahead

SuperTokens passes authentication documented, and Permit.io 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: no mandatory sales call. Permit.io misses it.

What neither does

Both fail limits / constraints documented, self-service signup, fast time to first request, 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.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Permit.io leads 85 to 31. Permit.io misses authentication documented, limits / constraints documented; SuperTokens misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Permit.io leads 70 to 60. Permit.io misses self-service signup, no mandatory sales call, fast time to first request; SuperTokens misses self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request.

Operate. Permit.io leads 59 to 24. Permit.io misses 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

Permit.io does not publish a machine-readable starting price and has a free tier. SuperTokens starts at $0.02/MAU and has a free tier.

Signal by signal

Which to pick

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

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