main

main is a cursor rule for Cursor from dkothule/ai-context. It costs 776 tokens per session, scanned A, original, MIT.

A mandatory Cursor rule that makes .ai-context the project's main source of workflow and continuity instructions. It defines which overview, standards, planning, structure, and session files to read at different stages of work.

In plain words
What is it for?
Use it to bootstrap a Cursor session, orient work in an unfamiliar codebase, plan non-trivial changes, continue earlier sessions, and follow the project's coding and testing rules.
Why use it?
It gives each session a consistent starting point and helps the agent follow project-specific standards. It also requires plans for larger changes and tests before committing.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions Claude Code; mentions Codex; mentions Cursor.

Good fit Use it to bootstrap a Cursor session, orient work in an unfamiliar codebase, plan non-trivial changes, continue earlier sessions, and follow the project's coding and testing rules.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/dkothule/ai-context/main
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/dkothule/ai-context

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 main

README.md
[![agentmods](https://agentmods.dev/badge/rules/dkothule/ai-context/main/github.svg)](https://agentmods.dev/rules/dkothule/ai-context/main)
Your own site
<a href="https://agentmods.dev/rules/dkothule/ai-context/main"><img src="https://agentmods.dev/badge/rules/dkothule/ai-context/main/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 main

Your own site · 80×15
<a href="https://agentmods.dev/rules/dkothule/ai-context/main"><img src="https://agentmods.dev/badge/rules/dkothule/ai-context/main.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 776 This file is loaded in full into every session.
When invoked 776 The same file — it is already loaded in full.
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 $0.00776 $0.00776
Opus 5.5 $0.00310 $0.00310
Sonnet 5.5 $0.00155 $0.00155
Haiku 4.5 $0.00078 $0.00078

Measured 1mo ago against content hash 0dd66bd1e8fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

main 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 1mo 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/main.mdc · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.


description: Bootstrap Cursor to shared .ai-context instructions globs: alwaysApply: true


Cursor Adapter Rule

Use .ai-context/ as the single source of truth for project workflow, standards, and session continuity. This rule is intentionally thin.

Session Start

All paths below are relative to .ai-context/.

Always read:

  1. project.overview.md — what this project is
  2. project.tasks.md — what is in flight, blocked, next
  3. Session logs in sessions/ — never _archive/, never _template.md: a. Newest by filename date. If several share that date, order by the time: frontmatter field; where absent, fall back to filename order. b. Scan the # Session: heading of the other same-date logs and read any whose topic relates to the current task. c. If that log's "Next Steps" or "Notes For Next Agent" points at earlier work you are continuing, follow the reference. Read at most 3 logs unless continuation references in (c) require more.

Then read based on task:

  • Writing/modifying code → standards/project.rules.base.md, standards/project.rules.md
  • Release/history context → project.changelog.md
  • Understanding layout → project.structure.md
  • Planning non-trivial work → project.tasks.md, plans/
  • Language/testing → files in standards/

Planning

Before non-trivial work (multi-session, architectural change, external dependency), write a plan to .ai-context/plans/YYYY-MM-DD-<topic>.md using _template.md. Reference it from project.tasks.md.

During Work

  • Follow .ai-context/standards/project.rules.base.md and project.rules.md.
  • One logical change per commit; tests run before commit.
  • Route state changes to the right .ai-context/ file: decision → project.decisions.md, user-visible change → project.changelog.md, task transition → project.tasks.md, plan → plans/, session close → sessions/.

Session End (Mandatory)

  1. Write .ai-context/sessions/YYYY-MM-DD-<topic>.md from _template.md. Multiple logs per day are fine — one per topic.
  2. Update project.tasks.md, project.decisions.md, project.changelog.md as applicable.

Read the full file on GitHub · 56 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. 1mo ago Changed · +8 lines · +142 tokens per session 0dd66bd1e8fa
  2. 2mo ago First seen · 48 lines · 634 tokens per session scan A 9a29466737d7

Subscribe to this mod's changes

main is a cursor rule published in the GitHub repository dkothule/ai-context (11 stars, last pushed 1mo ago), licensed MIT. It adds 776 tokens to every session, about $0.0031 per session on Opus 5.5. 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 2026-08-30.