typescript-mcp

typescript-mcp is a cursor rule for Cursor from jhgaylor/express-mcp-server-text-extractor. It costs 1,379 tokens per session, scanned A, original, no licence file.

TypeScript software for building MCP servers and clients. TypeScript is a programming language based on JavaScript, while MCP is a standard for connecting assistants to tools.

In plain words
What is it for?
Creating MCP servers and clients in TypeScript.
Why use it?
It provides the code needed to implement the full MCP standard in TypeScript.

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/jhgaylor/express-mcp-server-text-extractor/typescript-mcp
Clone the repo
git clone --depth 1 https://github.com/jhgaylor/express-mcp-server-text-extractor

Made for: Cursor.

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.

agentmods badge for typescript-mcp

README.md
[![agentmods](https://agentmods.dev/badge/rules/jhgaylor/express-mcp-server-text-extractor/typescript-mcp.svg)](https://agentmods.dev/rules/jhgaylor/express-mcp-server-text-extractor/typescript-mcp)
Your own site
<a href="https://agentmods.dev/rules/jhgaylor/express-mcp-server-text-extractor/typescript-mcp"><img src="https://agentmods.dev/badge/rules/jhgaylor/express-mcp-server-text-extractor/typescript-mcp.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,379 This file is loaded in full into every session.
When invoked 1,379 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.01379 $0.01379
Opus 5 $0.00690 $0.00690
Sonnet 5 $0.00276 $0.00276
Haiku 4.5 $0.00138 $0.00138

Measured 4d ago against content hash 21d73a58daff, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

typescript-mcp 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 4d 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.

.cursor/rules/typescript-mcp.mdc · 172 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 4d ago First seen · 172 lines · 1,379 tokens per session scan A 21d73a58daff

Subscribe to this mod's changes

typescript-mcp is a cursor rule published in the GitHub repository jhgaylor/express-mcp-server-text-extractor (1 stars, last pushed 1y ago), with no licence file. It adds 1,379 tokens to every session, about $0.0069 per session on Opus 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.