Agent-ready auth providers
We scanned 11 authentication and user management services: login, SSO and identity the way an AI agent would, and scored how well ChatGPT, Claude and Perplexity can read each one, sign a team up and connect through the API.
Which auth provider is best for AI agents?
It depends on what you need agents to do. If you want an agent to sign your team up and connect through the API, Clerk scores highest (93/100), followed by WorkOS (93) and Auth0 (85). Clerk, WorkOS, Descope, Kinde and Better Auth run remote MCP servers agents can connect to directly. None of them blocks AI agents outright. Scores as of 3 Nov 2026.
| # | auth provider | Score /100 | Core /60 | Sign up /40 | API /40 | Bot wall | llms.txt | MCP | OpenAPI | Public pricing | Biggest gap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ClerkRe-check live | 93 | 58 | 30 | 40 | · | ✓ | ✓ | ✓ | ✓ | SoftwareApplication data |
| 2 | WorkOSRe-check live | 93 | 58 | 30 | 40 | · | ✓ | ✓ | ✓ | ✓ | SoftwareApplication data |
| 3 | Auth0Re-check live | 85 | 58 | 36 | 17 | · | ✓ | · | · | ✓ | Remote MCP server |
| 4 | DescopeRe-check live | 82 | 58 | 20 | 27 | · | ✓ | ✓ | · | · | Public pricing page |
| 5 | FusionAuthRe-check live | 82 | 55 | 30 | 24 | · | ✓ | · | ✓ | ✓ | Remote MCP server |
| 6 | KindeRe-check live | 82 | 52 | 40 | 20 | · | ✓ | ✓ | · | ✓ | OpenAPI spec |
| 7 | Better AuthRe-check live | 77 | 49 | 30 | 25 | · | ✓ | ✓ | · | ✓ | OpenAPI spec |
| 8 | FronteggRe-check live | 74 | 53 | 30 | 12 | · | ✓ | · | · | ✓ | Remote MCP server |
| 9 | OktaRe-check live | 72 | 51 | 30 | 12 | · | ✓ | · | · | ✓ | Remote MCP server |
| 10 | SuperTokensRe-check live | 72 | 55 | 16 | 17 | · | ✓ | · | · | ✓ | A self-serve sign-up link |
| 11 | StytchRe-check live | 64 | 53 | 14 | 8 | · | ✓ | · | · | · | Public pricing page |
Automated, read-only scan of each homepage, robots.txt, llms.txt, docs, OpenAPI paths and MCP endpoints on 3 Nov 2026. Score = core + the average of Sign up and API, so the two job columns share 40 points. Scores can change; use "Re-check live" for today's result. How scoring works.
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Questions
Which auth provider is the most agent-ready?
Clerk, with 93/100 in our scan on 3 Nov 2026.
Which auth providers block AI agents?
None of the 11 we scanned.
How is the score calculated?
Out of 100: up to 60 core points for what every site needs (agents can reach and read it, structured data, llms.txt), plus the average of two job scores, each out of 40: letting an agent sign a team up (public pricing, an open sign-up page, a free plan) and letting it connect through the API (OpenAPI, MCP, self-serve keys, OAuth self-registration). For Clerk: 58 + (30 + 40) ÷ 2, rounded, = 93.