Is nb-add safe to install?

SaferSkills independently audited nb-add (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.

CategoryWeightCategory scoreContribution

Securityprompt, exec, net, exfil, eval

35%

100

35.0 pts

Supply chainhash, typosquat, maintainer, lockfile

20%

100

20.0 pts

Maintenancestaleness, pinning, CI

15%

100

15.0 pts

TransparencySKILL.md, perms, README

15%

100

15.0 pts

Communityinstalls, verify, response

15%

100

15.0 pts

Findings & checks · 0 flagged

Securityscore 100 · 0 findings

✓—All security checks passedNo findings in this category for the latest scan.pass

Supply chainscore 100 · 0 findings

✓—All supply chain checks passedNo findings in this category for the latest scan.pass

Maintenancescore 100 · 0 findings

✓—All maintenance checks passedNo findings in this category for the latest scan.pass

Transparencyscore 100 · 0 findings

✓—All transparency checks passedNo findings in this category for the latest scan.pass

Communityscore 100 · 0 findings

✓—All community checks passedNo findings in this category for the latest scan.pass

The primary manifest — the file an agent reads to learn what this artifact does.

skills/nb-add/SKILL.md · 1 file

skills/nb-add/SKILL.md1.1 KB · Markdown

name: nb-add

description: Add a new cell (markdown or code) to an existing Jupyter notebook in the

how-to repo. Use when the user wants to extend an existing notebook with a new section,

example, or code block. Triggers on "add a section to", "extend the notebook", "add

cell to", "add content to the notebook".

allowed-tools: Bash, Read

nb-add

Appends a new cell to an existing .ipynb without breaking the JSON structure.

Tools

scripts/add_cell.sh

Appends a new cell to an existing notebook.

Input: NB_ABS_PATH=<absolute path to .ipynb>
Input: CELL_TYPE=markdown|code (default: markdown)
Input: CELL_CONTENT=<cell source text>
Output: {appended: bool, path: string, cell_count: int}

Workflow

Identify the target notebook (ask if ambiguous)
Determine cell type and content from user request
Run NB_ABS_PATH="..." CELL_TYPE="..." CELL_CONTENT="..." bash scripts/add_cell.sh
Report success and new cell count

Notes

Markdown cells accept GFM
Code cells default to Python
The cell is always appended at the end. Use nb-add multiple times to add several cells.

nb-add— agent skill

Is nb-add safe to install?

nb-add

Tools

scripts/add_cell.sh

Workflow

Notes

Audit the pieces. Scan the whole. Decide.