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Langpad: Instructions file for GitHub Copilot

.github/copilot-instructions.md

Langpad copilot-instructions.md is an instructions file for GitHub Copilot from LangcliTeam/Langpad. It costs 712 tokens per session, scanned A, a copy of obsidian-agent-client copilot-instructions.md, Apache-2.0.

A set of GitHub Copilot instructions for Langpad, an Obsidian desktop plugin that lets users chat with external coding agents. It explains the project structure and rules for changing the code.

In plain words
What is it for?
It is for guiding changes to Langpad’s React and TypeScript interface, agent sessions, message streaming, Agent Client Protocol communication, and shared message handling.
Why use it?
It tells an agent where features belong and which architectural boundaries to respect. This reduces the chance of placing logic in the wrong layer or breaking the project’s integration code.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is LangcliTeam/Langpad's own configuration. It tells GitHub Copilot how to work on Langpad 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 Langpad configures →

not rated 1repo 5mo ago A scan 712 tokens copy · 100% Apache-2.0
View source ↗ LangcliTeam/Langpad langcli.com
Reuse

Borrowing it

Nothing to install: this file belongs to LangcliTeam/Langpad. 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/LangcliTeam/Langpad/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/LangcliTeam/Langpad

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 Langpad copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/langcliteam/langpad/copilot-instructions/github.svg)](https://agentmods.dev/instructions/langcliteam/langpad/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/langcliteam/langpad/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/langcliteam/langpad/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.

agentmods 80×15 button for Langpad copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/langcliteam/langpad/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/langcliteam/langpad/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 712 This file is loaded in full into every session.
When invoked 712 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 100% copy Near-identical to another mod 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 $0.00712 $0.00712
Opus 5.5 $0.00285 $0.00285
Sonnet 5.5 $0.00142 $0.00142
Haiku 4.5 $0.00071 $0.00071

Measured 1mo ago against content hash 638f6d6ea8dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Langpad 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 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.

Origin

This is a copy

100% identical to obsidian-agent-client copilot-instructions.md — 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.

.github/copilot-instructions.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Copilot Instructions (obsidian-agent-client)

Big picture

  • Obsidian desktop plugin (React 19 + TypeScript) that chats with external coding agents via Agent Client Protocol (ACP).
  • Uses a React Hooks Architecture: hooks own state/logic, components render, adapters integrate external systems, domain is pure types.

Key directories / “where to change things”

  • UI composition + adapter instantiation: src/components/chat/ChatView.tsx (creates adapters via useMemo, composes hooks).
  • Session lifecycle + agent switching: src/hooks/useAgentSession.ts.
  • Message state + streaming updates: src/hooks/useChat.ts.
  • ACP process + JSON-RPC wiring: src/adapters/acp/acp.adapter.ts.
  • Pure message prep/sending (mentions, auto-mention, WSL path conversion): src/shared/message-service.ts.
  • Domain contracts only (no deps): src/domain/models/*, src/domain/ports/*.

Architectural rules (project-specific)

  • Keep src/domain/** dependency-free: no obsidian imports, no @agentclientprotocol/sdk imports.
  • Add new behavior as hooks under src/hooks/ and compose them in ChatView.tsx (avoid introducing ViewModel/UseCase classes).
  • Put non-React business logic in src/shared/ as pure functions (see message-service.ts).
  • Adapters implement ports and isolate protocol/platform churn (ACP changes should mostly stay in src/adapters/acp/).

SessionUpdate / tool-call update flow (critical)

  • Use the unified pipeline: AcpAdapter.onSessionUpdate(...) → useChat.handleSessionUpdate(...).
  • Tool calls must be updated via useChat.upsertToolCall(...) using functional setMessages((prev) => ...) to avoid race conditions from streaming tool_call_update events.
  • When merging tool-call content, preserve existing values when updates are undefined and treat diffs as replace-all (see mergeToolCallContent in useChat.ts).

Obsidian & platform constraints

  • Desktop-only: ChatView throws when !Platform.isDesktopApp.
  • Use Obsidian Platform.isWin/isMacOS/isLinux helpers (avoid process.platform).
  • No innerHTML/outerHTML; use Obsidian element helpers (createEl/createDiv/createSpan).
  • Don't detach leaves in onunload.
  • Keep styling in styles.css (avoid JS style manipulation).

Read the full file on GitHub · 46 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 · 46 lines · 712 tokens per session scan A 638f6d6ea8dd

Subscribe to this mod's changes

Langpad copilot-instructions.md is an instructions file published in the GitHub repository LangcliTeam/Langpad (1 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 712 tokens to every session, about $0.0028 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to obsidian-agent-client copilot-instructions.md, differing in 0 lines, and is treated as a copy.

Claude Codecodexgemini-clilangcliobsidian
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