rulesforconvex

A set of always-on coding rules for Convex, a backend service for storing data and running server functions. It covers schemas, queries, updates, actions, validation, environment variables, Clerk authentication, and Resend email.

In plain words
What is it for?
Use it when creating or reviewing Convex schemas and functions, configuring deployment variables, adding Clerk sign-in, or sending email through Resend.
Why use it?
It gives the coding agent consistent guidance for building and checking Convex-backed applications, reducing mistakes in database definitions and server code.

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/waynesutton/promptstack/rulesforconvex
Clone the repo
git clone --depth 1 https://github.com/waynesutton/promptstack

Made for: Cursor.

Per session 523 This file is loaded in full into every session.
When invoked 523 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00523 $0.00523
Opus 5 $0.00262 $0.00262
Sonnet 5 $0.00105 $0.00105
Haiku 4.5 $0.00052 $0.00052

Measured 2d ago against content hash 8ef90fd2ea9d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rulesforconvex 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 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.

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.

Origin

This is a copy

95% identical to rulesforconvex — 26 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.cursor/rules/rulesforconvex.mdc · 42 lines

What it actually says


description: Convex guidelines globs: alwaysApply: true

Function guidelines

waynesutton@WS-Convex merge2 %

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 · 42 lines · 523 tokens per session scan A 8ef90fd2ea9d

Subscribe to this mod's changes

rulesforconvex is a cursor rule published in the GitHub repository waynesutton/promptstack (76 stars, last pushed 1y ago), licensed MIT. It adds 523 tokens to every session, about $0.0026 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to rulesforconvex, differing in 26 lines, and is treated as a copy.