setup

A command that checks whether the Cursor command-line tool is installed and authenticated, and can optionally install it.

In plain words
What is it for?
Use it to verify or install Cursor CLI and to surface authentication instructions when an API key or interactive login is needed.
Why use it?
It identifies setup problems before you try to delegate coding work to Cursor.

Command

Install

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.

agentmods
npx agentmods add commands/felipeinf/cursor-for-claude/setup
Clone the repo
git clone --depth 1 https://github.com/felipeinf/cursor-for-claude
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 222 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00013 $0.00222
Opus 5 $0.00006 $0.00111
Sonnet 5 $0.00003 $0.00044
Haiku 4.5 $0.00001 $0.00022

Measured 2d ago against content hash a7267d899bb2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

setup scanned grade C 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 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl https://cursor.com/install -fsS | bash

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Bash(node:*), Bash(curl:*), AskUserQuestion
plugins/cursor/commands/setup.md · 31 lines

What it actually says

Run:

node "${CLAUDE_PLUGIN_ROOT}/scripts/cursor-companion.mjs" setup --json

If cursor-agent is missing:

  • Use AskUserQuestion exactly once to ask whether Claude should install Cursor CLI now.
  • Put the install option first and suffix it with (Recommended).
  • Use these two options:
    • Install Cursor CLI (Recommended)
    • Skip for now
  • If the user chooses install, run:
curl https://cursor.com/install -fsS | bash
  • Then rerun:
node "${CLAUDE_PLUGIN_ROOT}/scripts/cursor-companion.mjs" setup --json

If Cursor is installed but not authenticated, surface the guidance to set CURSOR_API_KEY in the environment or run !cursor-agent interactively to log in. Do not auto-execute login.

Changes

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.

  1. 2d ago First seen · 31 lines · 13 tokens per session scan C a7267d899bb2

Subscribe to this mod's changes

setup is a command published in the GitHub repository felipeinf/cursor-for-claude (7 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 222 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.