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/understudylabs/understudy-agent-tools/install-cursor-pluginnpx skills add understudylabs/understudy-agent-tools --skill install-cursor-plugingit clone --depth 1 https://github.com/understudylabs/understudy-agent-toolsWhat 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 | $0.00065 | $0.00423 |
| Opus 5 | $0.00032 | $0.00211 |
| Sonnet 5 | $0.00013 | $0.00085 |
| Haiku 4.5 | $0.00006 | $0.00042 |
Grade C, and why
install-cursor-plugin scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf "$HOME/.cursor/plugins/local/understudy" What it actually says
Install the Understudy Cursor plugin
This skill is a compatibility shim. The consolidated setup surface is
install-agent-adapter.
Procedure
Load install-agent-adapter and run it with platform cursor.
Use its reference.md for the
current symlink install:
mkdir -p "$HOME/.cursor/plugins/local"
rm -rf "$HOME/.cursor/plugins/local/understudy"
ln -s "$REPO" "$HOME/.cursor/plugins/local/understudy"
Activation:
Developer: Reload Window
Then ask Cursor Agent:
Use the Understudy onboarding skill for this project.
Safety Gates
Local-first and free: installing the Cursor adapter only links local skills. It must not authenticate, upload data, inspect secret values, download model weights, start hosted jobs, or make provider calls.
- Only overwrite the exact
~/.cursor/plugins/local/understudypath. - Do not edit Cursor internal settings databases.
- Do not copy private traces, keys, or
.understudy/state into the plugin.
Resolve CLI
No Understudy CLI command is required. Use shell to create the local symlink after
confirming the repo contains .cursor-plugin/plugin.json.
Output Standard
End with: that this routed through install-agent-adapter; whether the Cursor
plugin was installed/refreshed/shown for manual run; the reload step; the next
onboarding prompt; and the uninstall command.
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 · 61 lines · 65 tokens per session scan C 7bd35928033a
install-cursor-plugin is a skill published in the GitHub repository understudylabs/understudy-agent-tools (16 stars, last pushed 2d ago), licensed MIT. It adds 65 tokens to every session and 423 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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