caddis-plugin: Instructions file for GitHub Copilot

.github/instructions/plan-mode.instructions.md

caddis-plugin plan-mode.instructions.md is an instructions file for GitHub Copilot from saajunaid/caddis-plugin. It costs 1,297 tokens per session, scanned A, original, MIT.

A planning rule for coding work that requires the agent to study the request and write a plan before changing code. Implementation waits until the plan is approved.

In plain words
What is it for?
It is for breaking down requirements, outlining implementation steps, and reviewing the proposed plan before development.
Why use it?
It helps prevent premature edits and gives you a chance to correct the approach before coding starts.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is saajunaid/caddis-plugin's own configuration. It tells GitHub Copilot how to work on caddis-plugin itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything caddis-plugin configures →

Reuse

Borrowing it

Nothing to install: this file belongs to saajunaid/caddis-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/saajunaid/caddis-plugin/main/.github/instructions/plan-mode.instructions.md
Clone the repo
git clone --depth 1 https://github.com/saajunaid/caddis-plugin

Made for: GitHub Copilot.

Wrote this? Show the measurements

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README.md
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Per session 1,297 This file is loaded in full into every session.
When invoked 1,297 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 $0.01297 $0.01297
Opus 5.5 $0.00519 $0.00519
Sonnet 5.5 $0.00259 $0.00259
Haiku 4.5 $0.00130 $0.00130

Measured 1mo ago against content hash 24a2d05927a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

caddis-plugin plan-mode.instructions.md 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.

.github/instructions/plan-mode.instructions.md · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Mode Instructions

These instructions apply when the user enters "plan mode", "requirements mode", or provides raw requirements that need analysis before implementation.

Trigger Conditions

Activate plan mode when the user:

  • Says "plan mode", "planning mode", or "requirements mode"
  • Says "I need to build...", "We need a system that...", "Create a project for..."
  • Provides vague or high-level requirements
  • Asks for help with a new feature without specific details
  • Says "help me understand what we need"

Plan Mode Behavior

DO NOT

  • ❌ Write code immediately
  • ❌ Make assumptions about requirements
  • ❌ Skip the clarification phase
  • ❌ Provide implementation details before understanding the problem
  • ❌ Generate files without user confirmation

DO

  • ✅ Ask clarifying questions first
  • ✅ Confirm understanding before proceeding
  • ✅ Break down complex requirements into components
  • ✅ Identify missing information
  • ✅ Propose a plan before execution
  • ✅ Wait for user approval at each phase

Documentation Metadata

Any PRD, plan, requirements doc, or other descriptive Markdown artefact created or updated during plan mode must follow .github/instructions/document-frontmatter.instructions.md.

Plan Mode Workflow

Phase 1: Discovery (Required)

When user provides requirements, respond with:

I'm in plan mode. Before we start building, let me understand the requirements fully.

**What I understood:**
{summarize what you understood}

**Questions I need answered:**
1. {specific question about scope}
2. {specific question about users}
3. {specific question about data}
4. {specific question about constraints}

**Missing information:**
- {what's not clear}

Please answer these questions, or let me know if my understanding is correct.

Phase 2: Confirmation

After gathering information:

**Requirements Summary:**

| Aspect | Details |
|--------|---------|
| Goal | {one sentence} |
| Users | {who will use this} |
| Data Sources | {where data comes from} |
| Key Features | {main capabilities} |
| Constraints | {timeline, tech, compliance} |

**Proposed Approach:**
1. {step 1}
2. {step 2}
3. {step 3}

**Recommended Agents:**
- PRD agent - To generate formal PRD
- Architect agent - To design the system
- Implement (or other relevant) agent - For implementation

Does this look correct? Should I proceed with generating the PRD?

Read the full file on GitHub · 203 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 First seen · 203 lines · 1,297 tokens per session scan A 24a2d05927a5

Subscribe to this mod's changes

caddis-plugin plan-mode.instructions.md is an instructions file published in the GitHub repository saajunaid/caddis-plugin (0 stars, last pushed today), licensed MIT. It adds 1,297 tokens to every session, about $0.0052 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 2026-08-31.

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