Borrowing it
Nothing to install: this file belongs to TheNickSanchez/passkey-mcp. 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/TheNickSanchez/passkey-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/TheNickSanchez/passkey-mcpWrote 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/thenicksanchez/passkey-mcp/agents-md)<a href="https://agentmods.dev/instructions/thenicksanchez/passkey-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/thenicksanchez/passkey-mcp/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/thenicksanchez/passkey-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/thenicksanchez/passkey-mcp/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 | $0.01231 | $0.01231 |
| Opus 5.5 | $0.00492 | $0.00492 |
| Sonnet 5.5 | $0.00246 | $0.00246 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade B, and why
passkey-mcp AGENTS.md 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 1mo 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.
Primary protection is the OS keychain ACL. Extra sudo/pkexec is **opt-in** How it starts
The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.
passkey-mcp — Agent Notes
Verified 2026-09-14. Roadmap is PLAN.md (first installable release 0.4.0,
on PyPI). Package version lives in pyproject.toml. passkey --version
reads importlib.metadata.version("passkey-mcp"). This tree is 0.4.x,
Alpha.
Positioning: local OS-keychain injector for MCP/CLI secrets. Not a team vault.
Positioning: local OS-keychain injector for MCP/CLI secrets. Not a team vault.
Agents
This chat is the PM (.cursor/rules/parent-pm.mdc): sequence work, dispatch
the four specialists, discuss results with Nick. Do not add a fifth
profile. Custom agents in .cursor/agents/; invocation in
.cursor/rules/agent-routing.mdc. Parent Task prompts: branch, PLAN section
id, stop-before-commit. Do not paste a second PLAN.md.
| Profile | When |
|---|---|
sys-arch |
PLAN.md names a design fork. PLAN.md only. Skip table refreshes. |
sys-engineer |
Implement and test. Handoff includes named untracked files. |
sys-release |
Every PR: SemVer, promote previous Unreleased → dated ## 0.3.N, bump versions + uv.lock. |
sys-review |
Read-only merge lint. Uncommitted is expected if stop-before-commit. Nits do not restart the loop. |
Loop: arch only if a design fork exists → engineer → release → review →
PR (commit/PR only if Nick asks). Nits: engineer patches; do not re-run the
four-agent cycle unless Critical. A hook denies git push / gh pr create
if CHANGELOG.md is unchanged vs main. Until 1.0: patch = fix/docs/tests/CI;
minor = feature or 0.x breaking; major = 1.0.0 only. First tag is 0.4.0;
before that bump 0.3.x. PLAN.md current-state describes main.
Environment
- Python 3.10+; this machine is 3.14.
uvonly — never pip. uv synccreates.venv/. Lint config isruff.tomlonly.- Exercise the CLI with
uv run passkey …from a clone. Team install ispipx install passkey-mcp==0.4.0.
uv sync
uv run pytest -q
uv run ruff check passkey/ tests/
uv run passkey --help
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.
- 1mo ago Changed · +4 lines · +31 tokens per session 65046e3e436d
- 1mo ago Changed · -65 lines · -1,082 tokens per session e21f6869668a
- 1mo ago First seen · 154 lines · 2,282 tokens per session scan B 28a80e4869f1
passkey-mcp AGENTS.md is an instructions file published in the GitHub repository TheNickSanchez/passkey-mcp (0 stars, last pushed yesterday), licensed MIT. It adds 1,231 tokens to every session, about $0.0049 per session on Opus 5.5. 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 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).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.