semgrep-rule-creator

github.com/trailofbits/skills
Verdict: Generally safe
0 critical0 high3 medium
B
SCORE 75 / 100
$skillox install semgrep-rule-creatorSoon
Sign in to followFollowing emails you when a re-scan drops the grade. Opt-out is per-creator on /account/billing.

Why grade B?

score · 75 / 100

The current grade reflects 3 medium findings (3+ MEDs → B).

0 CRIT0 HIGH3 MED0 LOW
To reach a higher grade
  • A
    Reach Atarget score 95

    Resolve 1 of 3 MED (cap is 2).

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

Latest scan findings

Scan crawl-qias5d0s7u3b6fm8rxdapttt · Thu, 28 May 2026 17:03:07 GMT · 1ms

med
Arbitrary subprocess execution detected
The skill spawns subprocesses. Without a capability manifest declaring this, the skill could execute arbitrary commands.
rule: subprocess-executionline: 67CWE-78
▾
65```yaml
66# BAD: Only matches exact format
67pattern: os.system("rm " + $VAR)← spawns a subprocess outside declared capabilities
68
69# GOOD: Matches all os.system calls with taint tracking
med
Arbitrary subprocess execution detected
The skill spawns subprocesses. Without a capability manifest declaring this, the skill could execute arbitrary commands.
rule: subprocess-executionline: 74CWE-78
▾
72 - pattern: input(...)
73pattern-sinks:
74 - pattern: os.system(...)← spawns a subprocess outside declared capabilities
75```
76
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
▾
View latest scan →
skillox.io/c/semgrep-rule-creator