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.
npx agentmods add rules/alkoleft/platform-context-exporter/mode-transitionsgit clone --depth 1 https://github.com/alkoleft/platform-context-exporterWrote 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.
[](https://agentmods.dev/rules/alkoleft/platform-context-exporter/mode-transitions)<a href="https://agentmods.dev/rules/alkoleft/platform-context-exporter/mode-transitions"><img src="https://agentmods.dev/badge/rules/alkoleft/platform-context-exporter/mode-transitions.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.00907 |
| Opus 5 | $0.00000 | $0.00453 |
| Sonnet 5 | $0.00000 | $0.00181 |
| Haiku 4.5 | $0.00000 | $0.00091 |
Grade A, and why
mode-transitions 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.
This is a copy
100% identical to mode-transitions — 0 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.
How it starts
The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
VAN QA: MODE TRANSITIONS
TL;DR: This component handles transitions between modes, particularly the QA validation to BUILD mode transition, and prevents BUILD mode access without successful QA validation.
🔒 BUILD MODE PREVENTION MECHANISM
The system prevents moving to BUILD mode without passing QA validation:
graph TD
Start["User Types: BUILD"] --> CheckQA{"QA Validation<br>Completed?"}
CheckQA -->|"Yes and Passed"| AllowBuild["Allow BUILD Mode"]
CheckQA -->|"No or Failed"| BlockBuild["BLOCK BUILD MODE"]
BlockBuild --> Message["Display:<br>⚠️ QA VALIDATION REQUIRED"]
Message --> ReturnToVANQA["Prompt: Type VAN QA"]
style CheckQA fill:#f6546a,stroke:#c30052,color:white
style BlockBuild fill:#ff0000,stroke:#990000,color:white,stroke-width:3px
style Message fill:#ff5555,stroke:#dd3333,color:white
style ReturnToVANQA fill:#4da6ff,stroke:#0066cc,color:white
Implementation Example (PowerShell):
# Check QA status before allowing BUILD mode
function Check-QAValidationStatus {
$qaStatusFile = "memory-bank\.qa_validation_status" # Assumes status is written by reports.mdc
if (Test-Path $qaStatusFile) {
$status = Get-Content $qaStatusFile -Raw
if ($status -match "PASS") {
return $true
}
}
# Display block message
Write-Output "`n`n"
Write-Output "🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫"
Write-Output "⛔️ BUILD MODE BLOCKED: QA VALIDATION REQUIRED"
Write-Output "⛔️ You must complete QA validation before proceeding to BUILD mode"
Write-Output "`n"
Write-Output "Type 'VAN QA' to perform technical validation"
Write-Output "`n"
Write-Output "🚫 NO IMPLEMENTATION CAN PROCEED WITHOUT VALIDATION 🚫"
Write-Output "🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫🚫"
return $false
}
🚨 MODE TRANSITION TRIGGERS
CREATIVE to VAN QA Transition:
After completing the CREATIVE phase, trigger this message to prompt QA validation:
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.
- yesterday First seen · 101 lines · 0 tokens per session scan A a4550d8e8923
mode-transitions is a cursor rule published in the GitHub repository alkoleft/platform-context-exporter (48 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 907 tokens. A static security scan graded it A with 0 findings. It is 100% identical to mode-transitions, differing in 0 lines, and is treated as a copy.
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