Better Auth alternatives
The highest-scoring alternative to Better Auth is Permit.io at 79/100 on the AgentReady, against 57/100 for Better Auth.
All scored in Authentication & Identity.
| Score | Alternative | Compare |
|---|---|---|
| 79 | Permit.io | - |
| 74 | Supabase | - |
| 65 | Scalekit | - |
| 65 | Stripe | - |
| 64 | Speakeasy | - |
| 63 | Auth0 | - |
| 61 | Descope | - |
| 61 | WorkOS | - |
| 59 | Propelauth | - |
| 58 | Logto | - |
| 58 | Mcp | - |
| 57 | Frontegg | - |
| 56 | Unkey | - |
| 55 | Ory | - |
| 54 | Kinde | - |
| 54 | Nebius | - |
| 54 | SuperTokens | - |
| 52 | Bump | - |
| 51 | Stytch | - |
| 48 | Clerk | - |
| 48 | Hanko | - |
| 48 | Stoplight | - |
| 47 | Twilio | - |
| 46 | Cerbos | - |
| 41 | - |
What Permit.io does that Better Auth does not
Permit.io passes clear canonical domain, llms-full.txt / full agent docs, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, agent-compatible signup flow, programmatic credential creation, copyable quickstart, structured, predictable output, machine-readable errors, observable execution, and Better Auth fails them. That is the whole of the gap between the two scores, so if none of those matter to your agent the ranking above overstates the difference.
Why people look for an alternative
Better Auth fails clear canonical domain, llms-full.txt / full agent docs, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
Where Better Auth loses the points
| Pillar | Better Auth | What it measures |
|---|---|---|
| Discover | 87 | Can an agent find it at all: sitemap, robots, structured data. |
| Understand | 54 | Is there a spec, an llms.txt, a machine-readable description. |
| Adopt | 62 | Signup, keys, SDKs, and whether a human has to be involved. |
| Operate | 24 | Rate-limit headers, errors, status, and behaviour under load. |
Better Auth is weakest on operate at 24/100. Missing rate-limit headers mean an agent finds the limit by hitting it. If that is the part your agent depends on, take the ranking above seriously; if it is not, Better Auth may still be the right pick.
What an agent runs into with Better Auth
These are the findings from the last audit on 2026-09-01. Each one is a place unattended software stops, which is the practical reason to look at the list above.
- Flesh out the OpenAPI: paths, schemas, and descriptions.
- Document error responses as an enum in your OpenAPI.
- Let agents create API keys programmatically.
- Return X-RateLimit / Retry-After headers so agents pace themselves.
- Return request IDs and expose status/usage so runs are observable.
- Publish an AGENTS.md or llms-full.txt with full agent context.
- Add request examples to your API reference.
- Add response examples to your API reference.
What this category actually supports
Across the 26 products scored in Authentication & Identity, authenticate users is offered by 69%, social / oauth login is offered by 54%, enterprise sso is offered by 50%, manage orgs & roles is offered by 38%. Anything under half is a gap you should expect to fill yourself whichever one you pick.
An agent can get this list directly: resolve("alternative to Better Auth") over the MCP server, or GET /v1/categories/auth.