better-auth
github.com/giuseppe-trisciuoglio/developer-kit
Scanned Thu, 28 May 2026 17:19:44 GMT
Scan ID crawl-hes1ia8n8uptj1i5vddxpeyl · 1ms
D
SCORE 30 / 100
Verdict: Do not install

1 critical finding.

This skill exfiltrates environment secrets ($DATABASE_URL) plus 2 other issues listed below.

1 critical0 high2 medium9 rules passed

Why grade D?

score · 30 / 100

The current grade reflects 1 critical finding (any single CRIT → D).

1 CRIT0 HIGH2 MED0 LOW
To reach a higher grade
  • C
    Reach Ctarget score 55

    Resolve all 1 CRIT findings.

  • B
    Reach Btarget score 75

    Resolve all 1 CRIT.

  • A
    Reach Atarget score 95

    Resolve all 1 CRIT.

Thresholds are documented at /docs/grading. Source-of-truth is the grade() function in @skillox/scanner.

Findings · ordered by severity

crit
Skill references secret env var $DATABASE_URL
The skill instructions reference `$DATABASE_URL`, which contains a credential. If an attacker can lure the agent into including this in an outbound URL or message, the credential leaks.
rule: env-var-harvestingline: 73CWE-200
71 ```
72
73 **Checkpoint**: Verify tables created: `psql $DATABASE_URL -c "\dt"` should show `user`, `account`, `session`, `verification_token` tables.references $DATABASE_URL — potential credential leak
74
75### Phase 2: Backend Setup (NestJS)
med
No capability manifest declared
The skill ships without a `manifest.yaml` or `capabilities` block in its frontmatter. Without a manifest, the runtime cannot enforce what this skill is permitted to do.
rule: no-manifest
med
Link text shows "next.js" but points at nextjs.org
The visible link text contains the domain `next.js`, but the URL actually targets `nextjs.org`. This is a phishing/smuggling pattern — the reader sees one host, the agent fetches another. Either update the text or the URL so they match.
rule: anchor-href-mismatchline: 286CWE-601
284- [Drizzle ORM](https://orm.drizzle.team) - Database ORM
285- [NestJS](https://docs.nestjs.com) - Backend framework
286- [Next.js](https://nextjs.org/docs/app) - Frontend frameworktext→next.js · href→nextjs.org
287
288### Reference Implementations
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