tsdown-config-package-source-only

tsdown-config-package-source-only is a cursor rule for Cursor from prisma/orm. It costs 9 tokens per session (168 once invoked), scanned A, original, Apache-2.0.

A package rule for keeping one internal tsdown configuration helper as TypeScript source only. It forbids adding generated JavaScript files or changing its exports to point to them.

In plain words
What is it for?
It guides changes to the helper package and to the tools or applications that load it.
Why use it?
It keeps the configuration helper's source as the single reference and prevents runtime workarounds from changing the package contract.

Cursor rule for Cursor ✓ vendor

Written for Cursor: a Cursor rule (.mdc). Also seen: installed under .agents/ (shared by several agents).

Good fit It guides changes to the helper package and to the tools or applications that load it.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/prisma/orm/tsdown-config-package-source-only
About the project

Prisma ORM is a Node.js and TypeScript database toolkit that lets applications work with databases through a programming interface instead of writing every query directly in SQL. Developers use it with databases including PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB, and CockroachDB. The catalogue add-ons provide agent rules, skills, hooks, agents, and other workflows for using Prisma.

prisma/orm · 47,608 stars · on GitHub · prisma.io

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.

Clone the repo
git clone --depth 1 https://github.com/prisma/orm

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 tsdown-config-package-source-only

README.md
[![agentmods](https://agentmods.dev/badge/rules/prisma/orm/tsdown-config-package-source-only.svg)](https://agentmods.dev/rules/prisma/orm/tsdown-config-package-source-only)
Your own site
<a href="https://agentmods.dev/rules/prisma/orm/tsdown-config-package-source-only"><img src="https://agentmods.dev/badge/rules/prisma/orm/tsdown-config-package-source-only.svg" alt="Measured on agentmods" height="20"></a>
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 168 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00009 $0.00168
Opus 5 $0.00005 $0.00084
Sonnet 5 $0.00002 $0.00034
Haiku 4.5 $0.00001 $0.00017

Measured 3d ago against content hash 29a804ed69bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

tsdown-config-package-source-only 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 3d 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.

.agents/rules/tsdown-config-package-source-only.mdc · 20 lines

What it actually says

@repo/tsdown source-only policy

The package packages/0-config/tsdown is source-only and must not add emitted JavaScript artifacts to work around runtime config loading.

Rules

  • Do not add base.js (or other transpiled JS siblings) in packages/0-config/tsdown.
  • Do not change packages/0-config/tsdown/package.json exports to point to .js files.
  • Keep the export source-only (currently ./base.ts).

Rationale

  • This package is an internal config helper and should remain canonical TypeScript source.
  • Workarounds for runtime loading must be solved in consumers/tooling, not by emitting parallel JS files here.
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. 3d ago First seen · 20 lines · 9 tokens per session scan A 29a804ed69bd

Subscribe to this mod's changes

tsdown-config-package-source-only is a cursor rule published in the GitHub repository prisma/orm (47,608 stars, last pushed 4d ago), licensed Apache-2.0. It adds 9 tokens to every session and 168 once invoked, about $0.0000 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 2026-09-03.