Borrowing it
Nothing to install: this file belongs to yarrasys/kdbx. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/yarrasys/kdbx/main/AGENTS.mdgit clone --depth 1 https://github.com/yarrasys/kdbxWrote 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.
[](https://agentmods.dev/instructions/yarrasys/kdbx/agents-md)<a href="https://agentmods.dev/instructions/yarrasys/kdbx/agents-md"><img src="https://agentmods.dev/badge/instructions/yarrasys/kdbx/agents-md/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.
<a href="https://agentmods.dev/instructions/yarrasys/kdbx/agents-md"><img src="https://agentmods.dev/badge/instructions/yarrasys/kdbx/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.03243 | $0.03243 |
| Opus 5.5 | $0.01297 | $0.01297 |
| Sonnet 5.5 | $0.00649 | $0.00649 |
| Haiku 4.5 | $0.00324 | $0.00324 |
Grade B, and why
kdbx AGENTS.md scanned grade B with 2 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 14d 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 the agent to reveal its instructionsmediumSystem prompt leakage
Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.
- Secret intake is stdin, `--from-env`, or an interactive no-echo prompt. **Never argv.** Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **Every install route is live**: the curl installer, `go install`, `brew install How it starts
The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Canonical guidance for anyone — human or AI — working on this repository.
CLAUDE.mdis a symlink to this file so there is one source of truth.Working with kdbx (using the CLI) is documented in README.md. This file is about changing it.
What this is
github.com/yarrasys/kdbx — a single Go binary (MIT) that stores a project's secrets in
per-project, per-environment KeePassXC vaults and injects them into child processes without
ever printing them. It is a port of the Python kdbx skill in
yarrasys/extensions, which
is now the frozen reference implementation.
Current status — read this first
Released and consumed. The repo is public at https://github.com/yarrasys/kdbx, CI is green on Linux, macOS and Windows, and the current release is v0.3.2. As of 2026-10-14:
- 23 packages, full suite green under
-race, cross-compiles to darwin/linux/windows × amd64/arm64. 11 CLI-contract scenarios pass. - 16 commands:
init set get list delete mv run export import check envs rekey guard policy mcp completion.install-launcherwas removed — the binary is its own launcher. - Vaults are standard KDBX4 (Argon2, key-file-only), so
keepassxc-cliand the KeePassXC desktop app read Go-written vaults directly. The Python↔Go parity harness that verified the original port has been retired now that the Python reference is no longer a consumer. golangci-lintv2 runs clean locally and in CI.mainis protected: thelintand three-OStestchecks are required (admins may still push directly).- Everything builds, tests, scans and releases on Go 1.26.x. Go 1.25 left support when Go
1.27 shipped, and the weekly
govulncheckrun was red for five weeks before anyone noticed, becausegovulncheck@latestonly runs on a supported Go. The pin lives in six workflow files and in thegodirective ofgo.mod; move all seven together when Go 1.28 retires 1.26 (expected February 2027). - Every install route is live: the curl installer,
go install,brew install yarrasys/tap/kdbx(v0.3.2) andghcr.io/yarrasys/kdbx(v0.3.2). Releases ship six archives plusSHA256SUMSand a keyless cosign signature — see SECURITY.md. - The consuming change has landed:
yarrasys/extensionsmerged the skill-and-plugin switch to the binary in PR #36, freezing its Python implementation.
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.
- 14d ago Changed · +8 lines · +177 tokens per session a902056f4fda
- 1mo ago First seen · 191 lines · 3,066 tokens per session scan B d5f935c4e996
kdbx AGENTS.md is an instructions file published in the GitHub repository yarrasys/kdbx (5 stars, last pushed 6d ago), licensed MIT. It adds 3,243 tokens to every session, about $0.0130 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks the agent to reveal its instructions, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.