mcp-integration-rules

Rules for integrating MCP, a standard way for AI applications to connect to external tools and data sources.

In plain words
What is it for?
Implementing, documenting, and managing MCP integrations, including server management and resource handling.
Why use it?
They help keep connections to multiple MCP servers and their advanced features consistent.

Cursor rule for Cursor

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 rules/sparesparrow/cursor-rules/mcp-integration-rules
Clone the repo
git clone --depth 1 https://github.com/sparesparrow/cursor-rules

Made for: Cursor.

Per session 2,985 This file is loaded in full into every session.
When invoked 2,985 The same file — it is already loaded in full.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.02985 $0.02985
Opus 5 $0.01492 $0.01492
Sonnet 5 $0.00597 $0.00597
Haiku 4.5 $0.00298 $0.00298

Measured 2d ago against content hash 6bf0bd38a009, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcp-integration-rules scanned grade A 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.

Makes network callslowCapability

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

const requests = this.requests.get(toolName) || [];
.cursor/rules/mcp/mcp-integration-rules.mdc · 561 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 561 lines · 2,985 tokens per session scan A 6bf0bd38a009

Subscribe to this mod's changes

mcp-integration-rules is a cursor rule published in the GitHub repository sparesparrow/cursor-rules (73 stars, last pushed 8mo ago), licensed GPL-3.0. It adds 2,985 tokens to every session, about $0.0149 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.