00-platform

Shared rules for an AI development platform used across projects. They define general decisions about architecture, maintainability, task handling, and working-mode instructions.

In plain words
What is it for?
Use them as repository-wide guidance when planning development work, reading project instructions, choosing an architecture, or reporting completion.
Why use it?
They keep development work consistent and provide a common process for understanding project context before making changes.

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/conlinjoe/ai-platform/00-platform
Clone the repo
git clone --depth 1 https://github.com/ConlinJoe/ai-platform

Made for: Cursor.

Per session 3,752 This file is loaded in full into every session.
When invoked 3,752 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.03752 $0.03752
Opus 5 $0.01876 $0.01876
Sonnet 5 $0.00750 $0.00750
Haiku 4.5 $0.00375 $0.00375

Measured yesterday against content hash d85df05b2efd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

00-platform 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 yesterday.

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/00-platform.mdc · 452 lines

How it starts

The opening of the file, as written. The whole thing — 452 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Global AI Platform

This repository contains the shared AI platform used by all development projects.

Objective

Produce production-ready solutions that are simple, maintainable, and consistent with the existing project architecture.

Decision Making

  • Think through the complete solution before responding.
  • Present one final recommendation.
  • Do not present drafts, alternatives, or incremental improvements unless explicitly requested.
  • Treat architecture, directory structures, workflows, and long-term design decisions as frozen once approved.

Fresh threads and completion reporting

Fresh threads are the default for bounded tasks. Do not reconstruct a large kickoff prompt.

Before the first edit in a session, read docs/working-mode.md if it exists. It is operational continuation state, not project context, architecture, or a progress log. Follow its references. Do not ingest unrelated docs. If the user only asked to resume or orient, confirm readiness and wait. If they supplied a bounded task, proceed under that working mode.

Portable orientation prompt: core/prompts/resume.md in the AI Platform clone.

Update docs/working-mode.md only when the working mode itself changes, not after routine bounded tasks. Durable facts belong in the authoritative contract, ADR, or status document.

Default to a short completion: DONE or BLOCKED, what materially changed, verification performed, and any actual concern or required human action. Do not require headings. Do not routinely emit file lists, walkthroughs, unchanged-behavior tables, architecture recaps, exhaustive test counts, or long READY reports. Use a longer report when the user asks, the task is an audit or review, architecture changed, operations require it, something failed or is blocked, the next decision needs the detail, or another contract requires it.

For applicable frontend or public-facing work, verification includes scripts/check-guardrails.sh. Lint, tests, and build passing do not imply that check ran. A failed guardrail check is not a green completion.

Read the full file on GitHub · 452 lines

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. yesterday First seen · 452 lines · 3,752 tokens per session scan A d85df05b2efd

Subscribe to this mod's changes

00-platform is a cursor rule published in the GitHub repository ConlinJoe/ai-platform (2 stars, last pushed 4d ago), licensed MIT. It adds 3,752 tokens to every session, about $0.0188 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.