cursor.link: Command for Claude Code

.cursor/commands/purple-lake.md

purple-lake is a command for Claude Code, Cursor from R44VC0RP/cursor.link. It costs 0 tokens per session (577 once invoked), scanned A, original, no licence file.

A command for creating REST API endpoints. A REST API is a way for software systems to exchange data over web requests; these endpoints include validation, error handling, and TypeScript type definitions.

In plain words
What is it for?
Creating complete TypeScript REST API endpoints with input validation and error handling.
Why use it?
It reduces the repeated work of setting up the standard checks, failure responses, and types needed by an API endpoint.

Command for Claude CodeCursor

Written for Cursor and Claude Code: installed under .cursor/, but also a Claude Code command (commands/*.md).

This is R44VC0RP/cursor.link's own configuration. It tells Claude Code and Cursor how to work on cursor.link itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cursor.link configures →

Reuse

Borrowing it

Nothing to install: this file belongs to R44VC0RP/cursor.link. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/R44VC0RP/cursor.link/main/.cursor/commands/purple-lake.md
Clone the repo
git clone --depth 1 https://github.com/R44VC0RP/cursor.link

Made for: Claude Code, 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 purple-lake

README.md
[![agentmods](https://agentmods.dev/badge/commands/r44vc0rp/cursor.link/purple-lake/github.svg)](https://agentmods.dev/commands/r44vc0rp/cursor.link/purple-lake)
Your own site
<a href="https://agentmods.dev/commands/r44vc0rp/cursor.link/purple-lake"><img src="https://agentmods.dev/badge/commands/r44vc0rp/cursor.link/purple-lake/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.

agentmods 80×15 button for purple-lake

Your own site · 80×15
<a href="https://agentmods.dev/commands/r44vc0rp/cursor.link/purple-lake"><img src="https://agentmods.dev/badge/commands/r44vc0rp/cursor.link/purple-lake.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
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 577 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 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 5.1 $0.00000 $0.00577
Opus 5 $0.00000 $0.00289
Sonnet 5 $0.00000 $0.00115
Haiku 4.5 $0.00000 $0.00058

Measured 9d ago against content hash 2faa168d0065, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

purple-lake 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 9d 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/commands/purple-lake.md · 90 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. 9d ago First seen · 90 lines · 0 tokens per session scan A 2faa168d0065

Subscribe to this mod's changes

purple-lake is a command published in the GitHub repository R44VC0RP/cursor.link (20 stars, last pushed 6mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 577 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.