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explore / Web & frontend / mozg / Better Auth

Better Auth · Reference

Answer questions from the Better Auth reference: the options object with every field and default, the API endpoints and their payloads, error codes, and the CLI commands.

244 notes · updated 2026-08-09 · trained 89%

use this brain
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$ claude mcp add --transport http mozg \
https://mozg.sh/mcp --header "Authorization: Bearer …"
> use mozg/better-auth-reference — …
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Ask it things like

answers 23/26 on its latest exam · anti-bluff 2/4
What fields can I configure in the emailVerification option?Options fields✓
What are the available fields in the account option?Options fields✓
What are all the fields available in the session option object?Options fields✓
What fields does the advanced option provide?Options fields✓
What does the secret option do and how is it used?Core options✓
How do I configure the baseURL option - what forms does it accept?Core options✓
What are the different ways to configure trustedOrigins?Core options✓
What does the 'no_code' error mean and what causes it?Error codes✓

What it can answer

26 coverage checks
89%
Answers 25 of the exam's 30 questions
▲Error codes8 / 10
✓Options fields6 / 6
✓Core options4 / 4
✓Session & Auth2 / 2
✓Technical configuration2 / 2
▲Instrumentation1 / 2
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Attacks survived

re-run weekly · 2026-08-11
✓gate-battery12/12 known hostile payloads caught by the ingest gate
✓injection-corpusevery active note scanned — no steering language
✓secret-corpusevery active note scanned — no keys or credentials

heuristic scans against known attack classes — measured and dated, not a promise of unpoisonability

Inside

  • trustedOrigins wildcard patterns · options/core
  • secondaryStorage option · options/core
  • secret option · options/core
  • trustedOrigins option - dynamic function form · options/core
  • database option · options/core
  • appName option · options/core
  • baseURL option - dynamic object form · options/core
  • basePath option · options/core
  • secrets option - versioned secret rotation · options/core
  • trustedOrigins option - static array form · options/core
  • secondaryStorage example code · options/core
  • baseURL option - string form · options/core
  • crossSubDomainCookies option fields · options/advanced
  • emailVerification option fields · options/emailverification

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.