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Better Auth vs Frontegg

Better Auth and Frontegg score alike on the AgentReady. They differ on 8 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Better Auth. A framework-agnostic, universal authentication and authorization framework for TypeScript.

Frontegg. Frontegg secures every entry point into your SaaS app.

Where Better Auth is ahead

Better Auth passes public docs discoverable, and Frontegg 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 and authentication documented. Frontegg misses those.

And on adopt, cli available. Frontegg misses it.

Where Frontegg is ahead

Frontegg passes clear canonical domain, and Better Auth does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: agent-compatible signup flow. Better Auth misses it.

And on operate, structured, predictable output and observable execution. Better Auth misses those.

What neither does

Both fail llms-full.txt / full agent docs, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, 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. Better Auth leads 87 to 80. Better Auth misses clear canonical domain, llms-full.txt / full agent docs; Frontegg misses public docs discoverable, llms-full.txt / full agent docs.

Understand. Better Auth leads 54 to 31. Better Auth misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented; Frontegg misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented.

Adopt. Frontegg leads 65 to 62. Better Auth misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart; Frontegg misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available.

Operate is whether an agent can run against it in production and recover when a call fails. Frontegg leads 50 to 24. Better Auth misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Frontegg misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Better Auth starts at $0/month and has a free tier. Frontegg does not publish one and has a free tier.

Signal by signal

Which to pick

Signal counts are level here, so fit and price decide it. Full profiles: Better Auth and Frontegg. Alternatives to each: Better Auth, Frontegg.

An agent can fetch this as data: POST /v1/compare {"slugs": ["better-auth", "frontegg"]}