What is openpost copilot-instructions.md?

Repository-specific instructions for working on getopenpost/openpost. They tell an AI coding assistant which project guidance to read before making changes.

Use them when modifying the getopenpost/openpost codebase, especially for product or interface work that has additional instructions.

They reduce the risk of changes that ignore the repository’s development process or architecture rules.

How getopenpost/openpost configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to getopenpost/openpost. 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/getopenpost/openpost/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/getopenpost/openpost

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/getopenpost/openpost/copilot-instructions/github.svg)](https://agentmods.dev/instructions/getopenpost/openpost/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/getopenpost/openpost/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/getopenpost/openpost/copilot-instructions/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/getopenpost/openpost/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/getopenpost/openpost/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 256 This file is loaded in full into every session.

When invoked 256 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00256	$0.00256
Opus 5.5	$0.00102	$0.00102
Sonnet 5.5	$0.00051	$0.00051
Haiku 4.5	$0.00026	$0.00026

Measured 2mo ago against content hash 6d795fae4e23, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openpost copilot-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 2mo 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/copilot-instructions.md · 27 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

2mo ago First seen · 27 lines · 256 tokens per session scan A 6d795fae4e23

Subscribe to this mod's changes

openpost copilot-instructions.md is an instructions file published in the GitHub repository getopenpost/openpost (875 stars, last pushed yesterday), licensed AGPL-3.0. It adds 256 tokens to every session, about $0.0010 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.

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openpost copilot-instructions.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
openpost copilot-instructions.mdgetopenpost/openpost	Instructions file	875	yesterday	AGPL-3.0	A	256	GitHub Copilot
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

openpost: Instructions file for GitHub Copilot