cursor

Setup instructions for connecting codescout to Cursor, a coding environment with an AI agent. They cover installing codescout, registering it through MCP, and adding related workflow tools and a code-reviewer agent.

In plain words
What is it for?
Use them to install codescout, add the project’s Cursor MCP configuration, connect the companion workflows, and enable code review support.
Why use it?
They help Cursor use codescout’s symbol and semantic tools to navigate a codebase and provide a shared project setup for a team.

Agent

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 agents/mareurs/codescout/cursor
Clone the repo
git clone --depth 1 https://github.com/mareurs/codescout
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,101 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00000 $0.02101
Opus 5 $0.00000 $0.01051
Sonnet 5 $0.00000 $0.00420
Haiku 4.5 $0.00000 $0.00210

Measured yesterday against content hash 52502ca0fc22, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cursor 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 yesterday.

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.

docs/agents/cursor.md · 234 lines

How it starts

The opening of the file, as written. The whole thing — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cursor

codescout works with Cursor Agent chat via the MCP protocol. Once registered, Cursor uses codescout's symbol and semantic tools for all code navigation instead of reading source files directly.


One-Time Setup

Prerequisites: Cursor (latest), Rust toolchain.

Install codescout:

cargo install codescout

The binary lands at ~/.cargo/bin/codescout. Make sure ~/.cargo/bin is in your PATH.

Next, clone the codescout-companion repository — this provides the workflow skills, enforcement hook, and code-reviewer agent used in the steps below. The commands use path/to/copilot-codescout as a placeholder for wherever you cloned it.

Register codescout as an MCP server

Recommended: project-level registration — checked into git, shared with your team. Create .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "codescout": {
      "command": "codescout",
      "args": ["start"]
    }
  }
}

Note: Cursor uses "mcpServers" (with s), unlike VS Code's "servers". If cargo is not in PATH, use the full path as the command value (e.g. ~/.cargo/bin/codescout).

Alternative: global registration — available in all projects. Open Cursor → Settings → Cursor Settings → MCP → Add new server → paste the same config block.

Once registered, codescout's system prompt injects automatically into every Agent session.

Add workflow skills

Cursor discovers rules in .cursor/rules/. Two options:

Option A — Convert each skill to .mdc format (recommended):

For each skill in path/to/copilot-codescout/Skills/, create a corresponding .cursor/rules/<name>.mdc file:

mkdir -p .cursor/rules

Each .mdc file follows this format:

---
description: [paste the description from skill frontmatter]
globs:
alwaysApply: false
---

[paste the full skill body here]

Set alwaysApply: false — Cursor auto-applies rules based on description matching, the same model-invoked behavior as Copilot Skills.

Read the full file on GitHub · 234 lines

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. yesterday First seen · 234 lines · 0 tokens per session scan A 52502ca0fc22

Subscribe to this mod's changes

cursor is an agent published in the GitHub repository mareurs/codescout (21 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,101 tokens. 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 2026-08-30.

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