What is cursor-customization?

A skill for writing and organizing Cursor Agent instructions, such as .cursor/rules files, AGENTS.md files, user rules, and MCP settings. Cursor Agent is a coding assistant that uses these files to guide its work.

Use it to create or restructure Cursor rules, choose when rules activate, manage nested instructions, and configure the MCP servers that Cursor Agent can use.

It helps choose which instructions apply to which files and prevents rule overload or rules being ignored.

cursor-customization — Skill by navendubrajesh

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.

Any agent

npx skills add navendubrajesh/context-management-for-agents --skill cursor-customization

Clone the repo

git clone --depth 1 https://github.com/navendubrajesh/context-management-for-agents

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/navendubrajesh/context-management-for-agents/cursor-customization/github.svg)](https://agentmods.dev/skills/navendubrajesh/context-management-for-agents/cursor-customization)

Your own site

<a href="https://agentmods.dev/skills/navendubrajesh/context-management-for-agents/cursor-customization"><img src="https://agentmods.dev/badge/skills/navendubrajesh/context-management-for-agents/cursor-customization/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/navendubrajesh/context-management-for-agents/cursor-customization"><img src="https://agentmods.dev/badge/skills/navendubrajesh/context-management-for-agents/cursor-customization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,207 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00089	$0.01207
Opus 5.5	$0.00036	$0.00483
Sonnet 5.5	$0.00018	$0.00241
Haiku 4.5	$0.00009	$0.00121

Measured 2mo ago against content hash cc7aafacfdb0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cursor-customization 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 2mo 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.

skills/cursor-customization/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cursor Customization

Cursor exposes a layered steering surface: Project Rules (.cursor/rules/*.mdc), User Rules, Team Rules, AGENTS.md, and MCP servers. These files are the primary user-controlled context channel for Agent (Chat). This skill covers authoring them with correct activation modes and token budgeting.

When to Activate

Activate this skill when:

Creating or restructuring .cursor/rules/ or root/nested AGENTS.md
Choosing between Always Apply, glob-scoped, agent-requested, and manual rule modes
Agent ignores stated conventions or applies backend rules to frontend files
Responses degrade after rules grow ("rule bloat")
Configuring MCP servers and deciding which to enable for Agent

Do not activate this skill for adjacent work owned by other skills:

Do not activate for semantic indexing or @-mention mechanics: cursor-context-architecture.
Do not activate for compression and session lifecycle: cursor-session-management.
Do not activate for platform-agnostic instruction theory: context-fundamentals.
Do not activate for MCP tool schema design: tool-design.

Core Concepts

Project rules (.mdc)

Rules live in .cursor/rules/ as .mdc files with YAML frontmatter: description, globs, alwaysApply. Plain .md files in that directory are ignored — use .mdc or AGENTS.md instead.

Mode	Frontmatter pattern	When it loads
Always Apply	`alwaysApply: true`	Every Agent session
Glob-scoped	`globs: "src/*/.tsx"`, `alwaysApply: false`	Matching files in context
Agent-requested	`description: "..."`, no globs	Agent decides from description
Manual	no description, no globs	`@rule-name` in chat

Precedence on conflict: Team Rules → Project Rules → User Rules.

Token budgeting always-on rules

alwaysApply: true rules prepend to every Agent request. Keep universal rules under ~50 lines of behavior-changing content. Push domain-specific guidance to glob-scoped or agent-requested rules — progressive disclosure native to Cursor.

Read the full file on GitHub · 91 lines

Files

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.

references/cursor-rules.md 1.1 KB

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.

2mo ago First seen · 91 lines · 89 tokens per session scan A cc7aafacfdb0

Subscribe to this mod's changes

cursor-customization is a skill published in the GitHub repository navendubrajesh/context-management-for-agents (2 stars, last pushed 1mo ago), licensed MIT. It adds 89 tokens to every session and 1,207 once invoked, about $0.0004 per session on Opus 5.5. 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.

Building agents

cursor-customization next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
cursor-customizationnavendubrajesh/context-management-for-agents	Skill	2	1mo ago	MIT	A	89	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code