Compare

Plunk vs SuperTokens

SuperTokens scores higher on the AgentReady, 54/100 against 26/100. They differ on 15 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Plunk. An open-source self-hosted email platform and email automation platform with transactional email, contacts, campaigns, segments, templates, workflows, events, and analytics capabilities

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

Where Plunk is ahead

Plunk passes agent compatibility verified, and SuperTokens does not. That is operate, whether an agent can run against it in production and recover when a call fails.

Where SuperTokens is ahead

SuperTokens passes clear canonical domain, clear product positioning, public docs discoverable, llms.txt published, llms-full.txt / full agent docs and machine-readable metadata, and Plunk does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: pricing understandable. Plunk misses it.

And on adopt, no mandatory sales call, free trial or free allowance, copyable quickstart, official typescript sdk, official python sdk and cli available. Plunk misses those.

Finally, on operate, canonical workflow succeeds. Plunk misses it.

What neither does

Both fail structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution. 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 47. Plunk misses clear canonical domain, clear product positioning, public docs discoverable, llms.txt published, llms-full.txt / full agent docs, machine-readable metadata; SuperTokens misses nothing.

Understand. SuperTokens leads 31 to 23. Plunk misses structured api reference, openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes 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. SuperTokens leads 60 to 15. Plunk misses self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart, official typescript sdk, official python sdk, cli available; SuperTokens misses self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request.

Operate. SuperTokens leads 24 to 18. Plunk misses canonical workflow succeeds, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution; SuperTokens misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

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

Signal by signal

Which to pick

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

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