anonymize-doc

anonymize-doc is a skill for Claude Code from digital-stoic-org/agent-skills. It costs 71 tokens per session (542 once invoked), scanned A, original, MIT.

A tool for detecting and anonymizing personally identifying information, such as emails and phone numbers, along with business-sensitive details such as prices and revenue.

In plain words
What is it for?
It is for checking documents for sensitive data and replacing it by masking, hashing, pseudonyms, tokens, or a mixed strategy.
Why use it?
It reduces the risk of exposing private or commercially sensitive information when sharing or processing documents.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; positional $N argument.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/mat/dev/agent-skills/dstoic/skills/anonymize-doc).

Part of the content plugin — 7 skills shipped together

Good fit It is for checking documents for sensitive data and replacing it by masking, hashing, pseudonyms, tokens, or a mixed strategy.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add digital-stoic-org/agent-skills
Claude Code
/plugin install content

Made for: Claude Code.

Or install content, the plugin that ships this one along with the rest of its 7 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for anonymize-doc

README.md
[![agentmods](https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/anonymize-doc/github.svg)](https://agentmods.dev/skills/digital-stoic-org/agent-skills/anonymize-doc)
Your own site
<a href="https://agentmods.dev/skills/digital-stoic-org/agent-skills/anonymize-doc"><img src="https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/anonymize-doc/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for anonymize-doc

Your own site · 80×15
<a href="https://agentmods.dev/skills/digital-stoic-org/agent-skills/anonymize-doc"><img src="https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/anonymize-doc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 542 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.00542
Opus 5 $0.00036 $0.00271
Sonnet 5 $0.00014 $0.00108
Haiku 4.5 $0.00007 $0.00054

Measured 10d ago against content hash 1ddfa321d37a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

anonymize-doc scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/anonymize.py, scripts/detect.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

content/skills/anonymize-doc/SKILL.md · 57 lines

What it actually says

PII & Business Data Anonymization

Detect and anonymize PII + sensitive business data using ML-powered detection (Scrubadub + spaCy NER).

Instructions

0. Dependency Check

SKILL_DIR="$(dirname "$(realpath "$0")" 2>/dev/null || echo /home/mat/dev/agent-skills/dstoic/skills/anonymize-doc)"
pip install -q -r "$SKILL_DIR/requirements.txt" && python -m spacy download -q en_core_web_sm 2>/dev/null

1. Ask Mode

Question: "Check for PII/business data (detection only) or anonymize?"

2. Detection

  1. Run: python "$SKILL_DIR/scripts/detect.py" <file_path>
  2. Parse JSON output → format report (type, line/col, severity, category)
  3. Ask: "Proceed with anonymization?"

3. Anonymization

Ask strategy:

Strategy Use Case Reversible GDPR
mask Max privacy, redaction No ✅ Full
hash Analytics, tracking No ✅ Full
pseudo Demos, case studies Yes ⚠️ Partial
token Financial, vault-backed Yes ⚠️ Partial
mixed Complex docs (auto per severity) Mixed ⚠️ Partial

Run: python "$SKILL_DIR/scripts/anonymize.py" <file_path> --strategy <choice>

Outputs: <file>-anonymized.<ext> + <file>-audit-log.json

4. Safety Rules

  • Preserve original file — never overwrite
  • Never commit audit logs to git — check .gitignore has *-audit-log.json
  • Warn: reversible strategies need secure mapping storage
  • GDPR requires irreversible (mask/hash) for full compliance

See reference.md for entity types, severity tiers, compliance details. See examples.md for before/after samples.

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 57 lines · 71 tokens per session scan A 1ddfa321d37a

Subscribe to this mod's changes

anonymize-doc is a skill published in the GitHub repository digital-stoic-org/agent-skills (20 stars, last pushed 4d ago), licensed MIT. It adds 71 tokens to every session and 542 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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