feat: add hooks authoring instruction 🤖🤖🤖 (#1507)

* feat: add hooks authoring instruction

Add hooks.instructions.md with portable guidance for writing GitHub Copilot hooks:
- Folder structure, config schema, and all field documentation
- Script contract: stdin JSON, exit codes, stdout/stderr channels
- Payload schemas for all common events (sessionStart, sessionEnd, userPromptSubmitted, preToolUse, postToolUse, errorOccurred, agentStop)
- Per-event deny mechanisms (structured JSON for preToolUse, non-zero exit for others)
- Matcher support for host-level tool filtering
- Three impactful examples: commit gate, auto-format, dangerous command blocker
- Bash and PowerShell templates
- Cross-platform guidance (Python through both entries)
- Anti-patterns, design rules, and portability notes (GitHub Copilot vs Claude Code)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: address PR review comments

- Document both toolArgs (JSON string) and tool_input/toolInput (object) variants with defensive parsing
- Update sessionStart stdout to reflect additionalContext injection support
- Document preToolUse stdout output fields: modifiedArgs/updatedInput, additionalContext
- Add matcher field note about local verification
- Remove undocumented notification event from event table

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: address round 2 review comments

- Defensive toolArgs parsing in all 3 example scripts (handle toolArgs string, tool_input, toolInput)
- PowerShell type check: test -is [string] before ConvertFrom-Json, init to null
- commit-gate.sh: add package.json existence guard before jq
- block-dangerous.sh: truncate command in deny reason and stderr to avoid leaking secrets
- Consistent defensive parsing helper across all Bash examples

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: handle toolArgs as string or object in jq, fix short_cmd scoping

- All 3 Bash example jq blocks now check toolArgs type before fromjson
- short_cmd defined before the deny/log branch to avoid set -u error
- Consistent defensive pattern across commit-gate, format-on-save, block-dangerous

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: remove accidentally committed agency.toml

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: expand Portability Note into CLI vs VS Code vs Cloud Agent section

Address Aaron's review: replace the thin portability bullet points with
a concrete comparison table covering what is the same (config schema,
event name casing, fields) and what differs (hook loading, shell
environment, tool argument field names). Add a 'How to write portable
hooks' checklist. Separate Claude Code into its own subsection.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: simplify to toolArgs-only parsing, clean portability section

- toolArgs is the documented contract — remove tool_input/toolInput defensive
  fallbacks from all examples and the Script Contract template
- Simplify portability section: same config everywhere, one-line note about
  cloud agent requiring default branch
- All 3 example scripts now use simple toolArgs pipe parsing

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Gordon Lam
2026-04-30 08:03:51 +08:00
committed by GitHub
parent 114aeac806
commit 5c0a993189
2 changed files with 598 additions and 0 deletions

View File

@@ -110,6 +110,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-instructions) for guidelines on
| [Go Development Instructions](../instructions/go.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgo.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgo.instructions.md) | Instructions for writing Go code following idiomatic Go practices and community standards |
| [Go MCP Server Development Guidelines](../instructions/go-mcp-server.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgo-mcp-server.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgo-mcp-server.instructions.md) | Best practices and patterns for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk package. |
| [Guidance for Localization](../instructions/localization.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Flocalization.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Flocalization.instructions.md) | Guidelines for localizing markdown documents |
| [Hook Authoring Guidelines](../instructions/hooks.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fhooks.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fhooks.instructions.md) | Portable guidance for authoring safe, fast, and clear hooks and reusable hook examples |
| [How to Use the Sample Components](../instructions/pcf-sample-components.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fpcf-sample-components.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fpcf-sample-components.instructions.md) | How to use and run PCF sample components from the PowerApps-Samples repository |
| [HTML CSS Style Color Guide](../instructions/html-css-style-color-guide.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fhtml-css-style-color-guide.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fhtml-css-style-color-guide.instructions.md) | Color usage guidelines and styling rules for HTML elements to ensure accessible, professional designs. |
| [Java 11 to Java 17 Upgrade Guide](../instructions/java-11-to-java-17-upgrade.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-11-to-java-17-upgrade.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-11-to-java-17-upgrade.instructions.md) | Comprehensive best practices for adopting new Java 17 features since the release of Java 11. |