Add /ai command to run GitHub Copilot Agents

[Copilot]

Implements a new /ai <prompt> command that creates GitHub Copilot Agent tasks directly from issue and PR comments.

Overview

This PR adds support for the /ai command which allows users with write access to create GitHub Copilot Agent tasks on the repository. The command intelligently handles context based on where it's invoked:

• On Pull Requests: Automatically includes the PR URL as context and, when both source and target branches are in the same repository, targets the source branch for changes
• On Issues: Creates an agent task with the provided prompt

Usage Examples

/ai fix the failing tests in this PR

/ai add documentation for the authentication module

Implementation Details

For PR comments, the command:

1. Fetches PR information to get the URL
2. Prepends the prompt with Related: <PR_URL> for context
3. Determines if both branches are in the same repo
4. Calls github.createAgent(prompt, sourceBranch) to create the task on the appropriate branch

For issue comments, it simply creates an agent task with the provided prompt.

For example, if a user runs /ai fix the errors in the pr on PR #33 that's merging branch bump into master, the command calls:

createAgent(
  "Related: https://github.com/PrismarineJS/prismarine-repo-actions/pull/33.\nfix the errors in the pr",
  "bump"
)

Changes

• Updated gh-helpers dependency from ^0.3.1 to ^1.1.0 to access the new createAgent API
• Added src/commands/ai.js implementing the command handler
• Registered the command in src/index.js
• Added comprehensive tests covering various scenarios (valid prompt, missing prompt, permission checks)
• Updated README.md with command documentation and configuration options

Testing

All tests pass (11/11), including 3 new tests specifically for the /ai command:

• ✅ Command works with valid prompt and permissions
• ✅ Command fails gracefully when no prompt is provided
• ✅ Command is properly restricted by permissions

Closes #[issue_number]

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add an /ai command to run GH Agents</issue_title>
<issue_description>Create an /ai <prompt> command runnable by WRITE_ROLES (comment.authorHasWrite) that calls gh-helpers's new api:

The new API allows users to programmatically create Copilot Agent tasks with a single function call:

```javascript
const github = require('gh-helpers')()

// Create an agent task on the default branch
github.createAgent('Fix the bug in the authentication module')

// Create an agent task on a specific branch
github.createAgent('Add new feature X', 'feature-branch')
```

try to pass in the current PR (or issue) URL as context.

if the comment was made in a PR and both the target and the source branch are inside the current repo, pass the source branch as the 2nd param to createAgent(prompt, branch?).

for example:
if you have a 'master' branch and a PR #33 has been open, it's trying to merge 'bump' into 'master', and user runs /ai fix the errors in the pr, you pass

createAgent(
  "Related: https://github.com/PrismarineJS/prismarine-repo-actions/pull/33.\nfix the errors in the pr",
  "bump"
)
```</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

Fixes #35

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	gh-helpers@​0.3.5 ⏵ 1.1.0	+26		+22	+24

View full report