Compare

Propelauth vs Stytch

Propelauth scores higher on the AgentReady, 59/100 against 51/100. They differ on 14 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

Stytch. The identity platform for humans & AI agents.

Where Propelauth is ahead

Propelauth passes mcp discoverable, and Stytch 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 and limits / constraints documented. Stytch misses those.

And on adopt, self-service signup, agent-compatible signup flow, free trial or free allowance, fast time to first request, cli available and mcp integration available. Stytch misses those.

Where Stytch is ahead

Stytch 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 understand: structured api reference. Propelauth misses it.

And on operate, structured, predictable output. Propelauth misses it.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, programmatic credential creation, 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. Stytch leads 87 to 80. Propelauth misses clear canonical domain, llms.txt published, llms-full.txt / full agent docs; Stytch misses mcp discoverable.

Understand. Both sit at 38/100 here. Propelauth misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented; Stytch misses openapi / spec quality, pricing understandable, 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 29. Propelauth misses no mandatory sales call, programmatic credential creation; Stytch 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, cli available, mcp integration available.

Operate. Stytch leads 50 to 39. Propelauth misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Stytch misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Propelauth starts at $0/month and has a free tier. Stytch does not publish one.

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 Stytch. Alternatives to each: Propelauth, Stytch.

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