Devtools Secrets

---
name: devtools-secrets
description: >
  Knowledge and guardrails for the mise + fnox + infisical secrets toolchain,
  covering secret injection, secret providers, and env var hygiene.
when_to_use: >
  Use when configuring secrets, setting up fnox or infisical, working with mise env,
  managing environment variables for secrets, or dealing with secret injection and
  secret providers.
---

# DevTools Secrets

Knowledge and guardrails for the **mise + fnox + infisical** secrets toolchain.

## Toolchain Validation

**IMPORTANT: Check tool availability before proceeding with any guidance.**

- mise: !`command -v mise >/dev/null 2>&1 && echo "INSTALLED ($(mise --version 2>/dev/null | head -1))" || echo "MISSING — install with: curl https://mise.run | sh"`
- fnox: !`command -v fnox >/dev/null 2>&1 && echo "INSTALLED ($(fnox --version 2>/dev/null | head -1))" || echo "MISSING — install with: mise use -g fnox"`
- infisical: !`command -v infisical >/dev/null 2>&1 && echo "INSTALLED ($(infisical --version 2>/dev/null | head -1))" || echo "MISSING — install with: mise use -g infisical"`

If any tool above shows **MISSING**, stop and help the user install it before
proceeding. Do not provide configuration guidance for tools that aren't
installed.

## Project Config State

- fnox.toml: !`test -f fnox.toml && echo "YES" || echo "NO (run: fnox init)"`
- .infisical.json: !`test -f .infisical.json && cat .infisical.json || echo "NO (run: infisical init)"`
- mise.toml env section: !`grep -A5 '^\[env\]' mise.toml 2>/dev/null || echo "No env section"`

## System/Global Config

- mise global config: !`test -f ~/.config/mise/config.toml && head -10 ~/.config/mise/config.toml || echo "No global mise config"`
- fnox global config: !`test -f ~/.config/fnox/config.toml && head -10 ~/.config/fnox/config.toml || echo "No global fnox config"`
- infisical logged in: !`infisical user get 2>/dev/null | head -3 || echo "Not logged in or not installed"`

## Tool Roles

| Tool | Role |
|------|------|
| **mise** | Task runner + env manager. Orchestrates dev tooling, runs tasks, manages env vars through plugins. |
| **fnox** | Unified secret interface. Abstracts over multiple secret backends (infisical, age, env files) with a single CLI. |
| **infisical** | Remote secrets backend. Stores, syncs, and injects secrets from a central server. |

These tools complement each other: infisical stores secrets remotely, fnox
provides a unified local interface to them, and mise orchestrates tasks that
consume secrets via fnox.

## Integration Chain

The typical flow:

1. **fnox.toml** defines infisical as a provider with project/environment config
2. **`fnox exec --`** resolves secrets from the provider and injects them as env vars
3. **mise tasks** can wrap `fnox exec` to run commands with secrets injected
4. Alternatively, **mise env plugins** can call fnox directly for auto-injection on `cd`

## Secrets Enforcement

This project enforces secrets hygiene via **always-on hooks** in
`.claude/settings.json` (not scoped to this skill):

- **`block-hardcoded-secrets.py`** — Blocks Edit/Write operations containing
  hardcoded API keys, tokens, passwords, or known secret prefixes (sk-, ghp_,
  AKIA, xox[bpras]-)
- **`block-bare-secret-exports.py`** — Blocks Bash commands that `export`
  secret-like env vars without wrapping in `fnox exec` or `infisical run`

These hooks are always active regardless of whether this skill is loaded.

## Configuration Patterns

Detailed configuration for each tool is in the reference files:

- @references/mise-integration.md — mise env plugins, tasks, fnox integration
- @references/fnox-configuration.md — fnox.toml structure, providers, profiles
- @references/infisical-patterns.md — infisical CLI, scanning, CI/CD

## Gotchas

- **Order matters**: fnox.toml must exist before `fnox exec` works. Run
  `fnox init` if missing.
- **Profile mismatches**: fnox profiles (dev/staging/prod) must match infisical
  environment slugs. A mismatch silently returns empty secrets.
- **`.infisical.json` is safe to commit** — it contains project IDs and
  workspace config, not secrets.
- **`fnox.toml` may contain sensitive paths** — review before committing if
  using age-encrypted file provider.
- **mise env plugins run on `cd`** — if a plugin calls fnox and fnox is
  misconfigured, you get errors on every directory change.
- **infisical auth expires** — `infisical login` tokens have a TTL. CI/CD
  should use `INFISICAL_TOKEN` (service token) instead.
- **Token path scope is explicit** — a service token scoped to `/` cannot
  access secrets in child paths like `/git_actions`. Each path requires its
  own token or use `--recursive` with the CLI directly.