idd-skill: Instructions file for GitHub Copilot

.github/instructions/idd-overview-appendix.instructions.md

idd-skill idd-overview-appendix.instructions.md is an instructions file for GitHub Copilot from kurone-kito/idd-skill. It costs 2,049 tokens per session, scanned C, original, MIT.

A reference guide for the IDD workflow, including timing rules, status summaries, and procedures for aborting or suspending work. IDD means issue-driven development, a process that links coding tasks to tracked issues and pull requests.

In plain words
What is it for?
Use it to look up policy constants, interpret live status digests, and follow the documented abort, hold, and suspension procedures.
Why use it?
It explains shared rules and prevents human-facing status comments from being mistaken for authoritative repository state.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions Claude Code; mentions Codex.

This is kurone-kito/idd-skill's own configuration. It tells GitHub Copilot how to work on idd-skill 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 idd-skill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kurone-kito/idd-skill. 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/kurone-kito/idd-skill/main/.github/instructions/idd-overview-appendix.instructions.md
Clone the repo
git clone --depth 1 https://github.com/kurone-kito/idd-skill

Made for: GitHub Copilot.

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 idd-skill idd-overview-appendix.instructions.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/kurone-kito/idd-skill/idd-overview-appendix"><img src="https://agentmods.dev/badge/instructions/kurone-kito/idd-skill/idd-overview-appendix/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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/kurone-kito/idd-skill/idd-overview-appendix"><img src="https://agentmods.dev/badge/instructions/kurone-kito/idd-skill/idd-overview-appendix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,049 This file is loaded in full into every session.
When invoked 2,049 The same file — it is already loaded in full.
Security scan C 1 finding. 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 $0.02049 $0.02049
Opus 5.5 $0.00820 $0.00820
Sonnet 5.5 $0.00410 $0.00410
Haiku 4.5 $0.00205 $0.00205

Measured 2d ago against content hash d2c8ca498404, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

idd-skill idd-overview-appendix.instructions.md scanned grade C with 1 finding 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 2d 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- idd-generated-from: idd-template/.github/instructions/idd-overview-appendix.instructions.md Generated by sync-docs. Edit the source above, then run `node scripts/sync-docs.mjs --apply`; do not edit this file. -->
.github/instructions/idd-overview-appendix.instructions.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

IDD — Reference and Implementation Appendix

This appendix contains reference content, implementation details, and maintainer guidance for the IDD workflow. The core runtime definitions are in idd-overview-core.instructions.md.

Policy Constants

The distributed claim, advisory, CI, and critique-loop defaults are named in docs/policy-constants.md. Read it before changing a timing or loop constant; record local deviations in onboarding or repository docs.

Live status digest

The optional live status digest is a human-facing issue or PR comment whose first line is <!-- idd-live-status: current -->. It is never an authority for IDD state — decide from trusted operational markers and GitHub state. If multiple marked digests exist, preserve them, report the URLs, and treat none as authoritative unattended. See docs/idd-comment-minimization.md for the contract and node scripts/live-status-digest.mjs, an optional helper (use the profile-selected form from docs/idd-helper-scripts.md).

Treat each digest create or edit as a GitHub side effect under the claim revalidation gate (idd-overview-core.instructions.md), with fields from the revalidated claim; set Authoritative by to the evidence.

A PR digest edit is still PR activity: do not edit it between a valid E1 review watermark and an intended F3 merge (it would perturb review-currency). Edit it only when leaving merge intent (returning to E1, routing F3 to F1/D4 as blocked, or a hold/stop), after F3 has merged, or while F2 is blocked only on secondaryQuietWindow (no longer perturbs it); the F3 awaiting-reviewer restart-F2 path skips edits too.

Abort

On abort, re-validate ownership first. If the active claim still uses your current {claim-id}, update the digest before posting unclaimed-by so it shows Phase: aborted/released, the planned release in Next action, and the verified claim plus abort reason in Authoritative by; then post an unclaimed-by comment for that same {claim-id}. If the active claim no longer uses your {claim-id}, do not update the digest or post a release comment. Open PR and remote branch left by a stale or unclaimed state are inheritable by the next agent (see idd-resume.instructions.md).

Read the full file on GitHub · 190 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. 2d ago Changed · -2 lines · -39 tokens per session d2c8ca498404
  2. 5d ago Changed · -1 lines · -20 tokens per session f18277063d3a
  3. 10d ago Changed · -10 lines · -118 tokens per session fddc7646a70e
  4. 14d ago Changed · +1 lines · +16 tokens per session 68699a9e9088
  5. 27d ago Changed · +3 tokens per session 73d6659f7136
  6. 1mo ago Changed · +3 lines · -13 tokens per session c7a3e2580b63
  7. 1mo ago Changed · -1 lines · -14 tokens per session a7c26887aff6
  8. 1mo ago Changed · +34 lines · +435 tokens per session 1a76289c66d9
  9. 1mo ago Changed · +10 lines · +111 tokens per session ef8cdc90fa2f
  10. 1mo ago First seen · 156 lines · 1,688 tokens per session scan C ca2bd3703e4f

Subscribe to this mod's changes

idd-skill idd-overview-appendix.instructions.md is an instructions file published in the GitHub repository kurone-kito/idd-skill (11 stars, last pushed today), licensed MIT. It adds 2,049 tokens to every session, about $0.0082 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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