Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/kyzdes/keys-keeper-skill/cursorgit clone --depth 1 https://github.com/kyzdes/keys-keeper-skillWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.02096 | $0.02096 |
| Opus 5 | $0.01048 | $0.01048 |
| Sonnet 5 | $0.00419 | $0.00419 |
| Haiku 4.5 | $0.00210 | $0.00210 |
Grade B, and why
cursor scanned grade B with 1 finding 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 2d ago.
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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- Linux desktop also wants the keyring tool: `sudo apt install libsecret-tools`. How it starts
The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
keys-keeper
Storage CLI is keys (run which keys / Get-Command keys to find the install path; typically wherever pipx installed it). Run keys --help for the full surface.
This integration is a transcript-hygiene workflow, not an isolation boundary against arbitrary code running as the same OS user. Normal commands avoid returning plaintext in tool output, but clipboard and file sinks remain readable by a shell-capable agent.
CRITICAL: never expose secret values
You MUST NOT:
- run
keys reveal(this command exists for the human, not for you) - pipe
keysoutput containing values into Edit/Write/Bash echo - ask the user to paste a secret value into chat (it lands in the transcript)
In compatibility mode you CAN use the following commands. They avoid printing plaintext during normal operation, but any destination that receives plaintext must be treated as exposed to other processes with access to that destination:
keys list/keys info NAME— metadata only, no valueskeys copy NAME— value goes to clipboard with 30s auto-clear, never stdoutkeys inject NAME --file PATH --as ENV— value goes directly to filekeys resolve PATH— placeholder substitution in file (writes back to the same path)keys add NAME --from-clipboard/--from-file PATH/--stdin(when the user already piped)keys ssh NAME— opens ssh session with resolved key (CLI manages tempfile with locked-down permissions: POSIX 0600 on macOS/Linux, icacls user-restricted ACL on Windows)keys rm NAME(use--cascadeif the entry is referenced by others)keys edit NAME— change tags / note / non-secret fields (--field key=value)keys audit --name X --since 7d/--op copy— search the audit logkeys sync status— sync mode + local/remote versions (metadata only, no values)keys doctor— paths + keychain sync check, useful when a value is missingkeys quickstart— read-only getting-started (config dir, command tour, first-key walkthrough); shows no values
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.
- 2d ago First seen · 112 lines · 2,096 tokens per session scan B 9b822e62ad9d
cursor is a cursor rule published in the GitHub repository kyzdes/keys-keeper-skill (2 stars, last pushed 23d ago), licensed MIT. It adds 2,096 tokens to every session, about $0.0105 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other cursor rules, from other repositories
ui-testing
This guide covers UI testing practices and patterns specifically for the DuckDuckGo macOS browser.
macos-singletons-removal
Define a concrete pattern for removing .shared singletons in the macOS app by replacing them with app-owned instances and dependency injection. The AIChatPreferences and AboutPreferences refactors in AppDelegate are canonical examples.
macos-system-integration
Use proper service management for background agents.
performance-optimization
// Use weak/unowned references appropriately class ViewController: UIViewController { private var timer: Timer?
subscription-architecture
DuckDuckGo's subscription system provides access to premium features including VPN (Network Protection), Personal Information Removal (PIR), Identity Theft Restoration (ITR), and AI Chat. The system supports multiple purchase platforms and cross-platform activation.
webkit-browser
Cursor rule "webkit-browser" from duckduckgo/apple-browsers, covering webkit & browser development guidelines, webview configuration, basic webview setup, user scripts management and tab management.