Claude Code, Plugin
Nl Tax Agent Skills
Claude & ChatGPT plugin that turns Dutch tax paperwork into a source-cited workpack for manual Mijn Belastingdienst entry: IB 2025, voorlopige aanslag 2026, ZZP btw drafts.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit d75859cd610d, unchanged since the check below.
PERMISSION_DELETE_FILES INSTALL_UNPINNED SECRETS_PATH_DOTENV OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
submission/openai/build_bundle.py, line 104
shutil.rmtree(output_dir) - INSTALL_UNPINNED Low
Dependencies use a range or git URL with no lockfile.
requirements.txt, line 1
PyYAML>=6.0 - SECRETS_PATH_DOTENV Low
Mentions a .env file.
.gitignore, line 42
.env - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
plugins/nl-tax-agent-skills/skills/nl-tax-shared-resources/source-register.yaml, line 1
# ============================================================================= - OBFUSCATION_FILE_CAP_REACHED Note
The 400 file cap was reached before every file was read.
plugins/nl-tax-agent-skills/skills/nl-tax-shared-resources/source-register.yaml, line 1
# =============================================================================
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Concern
can delete files.
PERMISSION_DELETE_FILES
submission/openai/build_bundle.py, line 104
shutil.rmtree(output_dir)
Install and update
Concern
dependencies are not pinned.
INSTALL_UNPINNED
requirements.txt, line 1
PyYAML>=6.0
Network
Pass
No network call found.
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
.gitignore, line 41
*.pem
.gitignore, line 42
.env
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read. the file cap was reached before every file was read.
OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
plugins/nl-tax-agent-skills/skills/nl-tax-shared-resources/source-register.yaml, line 1
# =============================================================================
submission/openai/reviews/source-review-2026-10-04.json, line 1
{
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit d75859cd610d. can delete files. dependencies are not pinned. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: d75859cd610d9dbc6b8840060ecc4899f29a4816
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