Skills and the Claude Code plugin
Claude Code · claude.ai · Claude Desktop — with the Hidden Tokens app on the same computer
A skill is the recipe; the Hidden Tokens app is the oven. The hidden-tokens skill teaches Claude the protocol: list the files first, work on the codes, never ask for a document in clear, deliver through the tools so the real values stay on your computer. Six profession skills add the recipes of a trade: which requests, which route, what stays readable and what is coded.
Without the app, the skills refuse to improvise a substitute and point to the download.
Claude Code: the plugin
Two commands, then restart Claude Code in the project you want protected:
claude plugin marketplace add hidden-tokens/plugin
claude plugin install hidden-tokens@hidden-tokens| Piece | What it does |
|---|---|
| MCP server | The Hidden Tokens connector of the app, with the open project as the working folder and English tool names (list_files, anonymise_folder, deanonymise, compute, ledger…). |
| Guard hook | Refuses Read, Grep, cat, jq… on the folder's files, the key and the decoded files; allows the coded copies and anything outside the folder. |
| Skills | The protocol and the six professions below, loaded when the request calls for them. |
English tool names need the app release that embeds connector 2.47.0 or later; an older app works, with the French names. Source and issues: github.com/hidden-tokens/plugin.
claude.ai and Claude Desktop: upload a skill
Settings → Capabilities → Skills → Upload skill, then pick a zip below. Each zip holds one skill folder with its SKILL.md; the last one holds all seven.
| Skill | What it teaches | Zip |
|---|---|---|
hidden-tokens | The protocol: eleven rules, the recipe from the first list_files to the sealed folder, the traps seen on real cases. | hidden-tokens.zip |
hidden-tokens-legal | Law firms and notaries: case files, pleadings, deeds; parties coded, dates and amounts readable. | hidden-tokens-legal.zip |
hidden-tokens-accounting | Accounting firms: ledgers, P&L, top customers; exact figures through compute. | hidden-tokens-accounting.zip |
hidden-tokens-hr-payroll | HR and payroll: pay gaps, headcount, small groups never isolated. | hidden-tokens-hr-payroll.zip |
hidden-tokens-telecom | Telecom operators: call records, subscribers, MSISDN and IMSI headers. | hidden-tokens-telecom.zip |
hidden-tokens-banking-insurance | Banks and insurers: accounts, claims, policies, IBAN and card numbers. | hidden-tokens-banking-insurance.zip |
hidden-tokens-healthcare | Clinics and practices: patients, records, prescriptions; health data stays coded. | hidden-tokens-healthcare.zip |
| All seven | One zip, one folder per skill. | hidden-tokens-skills.zip |
Claude Desktop also takes the Hidden Tokens connector itself, installed by the app: the skills then find their tools.
What a skill cannot do
A skill is text: it changes how Claude behaves, not what Claude can reach. The protection comes from the app on your computer, which codes the files and refuses to pass a real value. Read the skills before you install them: each one is a short Markdown file.