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 skills/1password/cursor-plugin/1password-environmentsnpx skills add 1Password/cursor-plugin --skill 1password-environmentsgit clone --depth 1 https://github.com/1Password/cursor-pluginWhat 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 | $0.00118 | $0.01951 |
| Opus 5 | $0.00059 | $0.00975 |
| Sonnet 5 | $0.00024 | $0.00390 |
| Haiku 4.5 | $0.00012 | $0.00195 |
Grade A, and why
1password-environments scanned grade A with 0 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 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
1Password Environments
Workflow for the 1Password MCP tools bundled with this plugin. Read this skill before calling MCP tools — the MCP server's built-in docs cover tool basics but omit import-and-mount steps. Conceptual background and edge cases: reference.md.
Prerequisites
- macOS or Linux with the 1Password desktop app installed (MCP, local
.envmounts, and mount validation are not supported on Windows) - MCP Server Labs experiment enabled in the desktop app (
onepassword://settings/labs) - Plugin installed (registers
1password-mcpMCP config, this skill, and mount validation hooks together)
Setup details: reference.md
Windows
Detect the platform before any workflow (user_info OS, C:\ paths, OS=Windows_NT,
etc.). On Windows, local .env mounts and the desktop MCP server are not supported.
Hard stop: do not call create_local_env_file, attempt mounting, or run mount-only
flows. Import is complete after create_environment (or resolve) + append_variables.
Recommend 1Password CLI environment injection (Load secrets into the environment).
Example to share:
op run --environment=<environmentId> -- <their-start-command>
Use the environmentId from the import response. Apps that read a .env file from disk need
this wrapper.
This section overrides mount steps below on Windows.
Not done until
Import / create from .env (including "using values from the project .env"):
- Environment created or resolved
- Variables appended via
append_variables -
create_local_env_fileat the source.envabsolute path — always - Mount verified with
list_local_env_files
Mounting at the source .env path is mandatory, not optional follow-up. The
only exception is the user explicitly opting out ("without mounting", "do not
mount", "skip the mount"). Never ask "want me to mount?" — just mount.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 174 lines · 118 tokens per session scan A 14a5097a4938
1password-environments is a skill published in the GitHub repository 1Password/cursor-plugin (10 stars, last pushed 14d ago), licensed MIT. It adds 118 tokens to every session and 1,951 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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