ai-plc-session

ai-plc-session is a cursor rule for Cursor from miyatti777/ai-plc. It costs 249 tokens per session, scanned A, original, MIT.

Session-management rules for an AI-PLC project, including when to split work into a new thread and what information to carry over.

In plain words
What is it for?
They are for deciding when to split sessions, handing off project context, and reporting completed tasks and next actions.
Why use it?
They help prevent long or divided tasks from losing context or ending without checking unfinished work.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

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/miyatti777/ai-plc/ai-plc-session
Clone the repo
git clone --depth 1 https://github.com/miyatti777/ai-plc

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 ai-plc-session

README.md
[![agentmods](https://agentmods.dev/badge/rules/miyatti777/ai-plc/ai-plc-session.svg)](https://agentmods.dev/rules/miyatti777/ai-plc/ai-plc-session)
Your own site
<a href="https://agentmods.dev/rules/miyatti777/ai-plc/ai-plc-session"><img src="https://agentmods.dev/badge/rules/miyatti777/ai-plc/ai-plc-session.svg" alt="Measured on agentmods" height="20"></a>
Per session 249 This file is loaded in full into every session.
When invoked 249 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 5.1 $0.00249 $0.00249
Opus 5 $0.00125 $0.00125
Sonnet 5 $0.00050 $0.00050
Haiku 4.5 $0.00025 $0.00025

Measured 6d ago against content hash d419008fb167, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ai-plc-session 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 6d 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/ai-plc-session.mdc · 39 lines

What it actually says

AI-PLC Session Management

Session Split Triggers

Condition Threshold
Sub-Layer count 3+
Total tasks 10+
Estimated time 2+ hours
Hierarchy depth 3+ levels

Context Handoff (new thread)

Required context for new threads:

  1. AI-PLC system README
  2. Target scope's intent.yaml
  3. Target scope's context.yaml
  4. Parent scope's intent.yaml (if Sub-Layer)

Session Completion Checklist

Before ending a session:

  1. Check parent scope for remaining Sub-Layers
  2. Check sibling Sub-Layers for actionable items
  3. Check pending tasks
  4. Propose next phase/task

Output Format

Every stage/task completion must include:

  1. Next Action Protocol — Choice table (A/B/C) + recommendation + copy-paste prompt
  2. Position Header + Summary — Scope / completed item / artifacts / status
  3. Progress Dashboard — Completed + next executable tasks only
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. 6d ago First seen · 39 lines · 249 tokens per session scan A d419008fb167

Subscribe to this mod's changes

ai-plc-session is a cursor rule published in the GitHub repository miyatti777/ai-plc (45 stars, last pushed 1mo ago), licensed MIT. It adds 249 tokens to every session, about $0.0012 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 2026-08-30.