CtrlK
BlogDocsLog inGet started
Tessl Logo

auth0-custom-domains

Use when setting up, verifying, or troubleshooting a custom Auth0 login domain (e.g. login.example.com). Covers CNAME setup, verification, TLS policy, Multiple Custom Domains, and Management API errors — even if the user just says "use my own domain for Auth0 login".

98

1.59x
Quality

Does it follow best practices?

Impact

94%

1.59x

Average score across 3 eval scenarios

SecuritybySnyk

Advisory

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Evaluation results

86%

34%

Custom Domain Diagnostics Script

Auth0 domain health check shell script

Criteria
Without context
With context

Parallel execution

0%

0%

curl HTTPS probe

50%

100%

openssl cert expiry

100%

100%

48-hour renewal risk flag

20%

100%

DNS mismatch renewal risk

25%

100%

External resolver check

100%

100%

Visual markers in output

100%

100%

Tenant name in report

87%

100%

Default domain identification

100%

100%

Free-tier credit card note

0%

100%

Proxied CNAME renewal risk

0%

100%

100%

34%

Auth0 Custom Domain: Incident Review and Management Commands

Auth0 API error triage and metadata management

Criteria
Without context
With context

403 not a plan issue

0%

100%

403 correct fix

0%

100%

400 immutable type

100%

100%

400 delete+recreate path

100%

100%

400 downtime warning

100%

100%

Metadata constraint check

0%

100%

GET before PATCH

100%

100%

Full merged object in PATCH

100%

100%

Default domain API passthrough

40%

100%

RPID API passthrough

100%

100%

RPID passkey warning

100%

100%

98%

39%

Auth0 Custom Domain Integration Planning

Auth0 custom domain setup and verification troubleshooting workflow planning

Criteria
Without context
With context

One-at-a-time questions

0%

87%

Tenant check position

100%

100%

relying_party_identifier included

0%

90%

No cert type question

100%

100%

No TLS policy question

100%

100%

Polling backoff sequence

0%

100%

DNS provider detection

100%

100%

CNAME pre-check

50%

100%

No delete-recreate

100%

100%

Diagnostic ladder order

60%

100%

Post-setup next steps

50%

100%

Repository
auth0/agent-skills
Evaluated
Agent
Claude Code
Model
Claude Sonnet 4.6

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.