Add community PR issue check agentic workflow

[Copilot]

Add community PR issue check agentic workflow

• You've read the Contributor Guide and Code of Conduct.
• You've included unit or integration tests for your change, where applicable.
• You've included inline docs for your change, where applicable.
• There's an open issue for the PR that you are making. If you'd like to propose a new feature or change, please open an issue to discuss the change or find an existing issue.

Add an agentic workflow for community PR issue checks

Description

This PR adds a community PR issue check for dotnet/aspnetcore, but updates the implementation based on review feedback to use a GitHub Agentic Workflow instead of a traditional shell-based GitHub Actions workflow.

Changes included:

• Adds .github/workflows/community-pr-issue-check.md
• Removes the previous shell-based .github/workflows/community-pr-issue-check.yml
• Runs when a pull request is labeled community-contribution
• Instructs the workflow agent to inspect the PR body contextually for issue references
• Verifies that referenced numbers are issues in the current repository, not pull requests
• Uses noop when a valid issue reference is already present
• Uses add-comment to post contribution-policy guidance when no qualifying issue is linked
• Uses repository variables in the generated guidance links and comment text for consistency

The scope remains focused on enforcing the repository policy that community contribution PRs should have an associated issue before review, but the implementation now aligns with the repository’s existing agentic workflow pattern.

Original prompt

User: Research https://docs.github.com/en/actions/how-tos/write-workflows to create a workflow that reviews new opened PRs, determines if they are community contributions, and checks if they have associated issues. Our goal is to enforce the contribution policy that we have on the repo, where issues need to be opened before PRs for taking contributions. Research also on #github in dotnet/aspnetcore the details

GitHub Copilot: Created 4 todos

Fetched https://docs.github.com/en/actions/how-tos/write-workflows

Let me dig deeper into the workflow syntax and the dotnet/aspnetcore contribution policies.

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"repo": "aspnetcore",
"path": ".github/workflows"
}

Fetched https://docs.github.com/en/actions/how-tos/write-workflows/choose-when-workflows-run/events-that-trigger-workflows

Fetched https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions

Now let me look at the aspnetcore contribution policy and the teams file to understand how they identify community contributors vs team members.

Starting: Research dotnet/aspnetcore PR policies (2/4)

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"path": "CONTRIBUTING.md",
"repo": "aspnetcore"
}

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"path": ".github/PULL_REQUEST_TEMPLATE.md",
"repo": "aspnetcore"
}

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"path": ".github",
"repo": "aspnetcore"
}

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"path": ".github/pull_request_template.md",
"repo": "aspnetcore"
}

Ran Get file or directory contents
Completed with input: {
"owner": "dotnet",
"path": ".github/PULL_REQUEST_TEMPLATE",
"repo": "aspnetcore"
}

Fetched 2 resources

Starting: Create the PR review workflow (4/4)

Here's a summary of my research findings, followed by the workflow I've created:

---

Research Findings

GitHub Actions Workflow Mechanics

• pull_request_target is the right event trigger. Unlike pull_request, it runs in the context of the base branch and grants the GITHUB_TOKEN read/write permissions even for PRs from forks. This is essential because community PRs come from forks, and the standard pull_request event gives only read-only tokens for fork PRs.
• Security: With pull_request_target, you must never checkout the PR's head code and execute it, as that opens a script injection vector. This workflow only reads PR metadata (author, body), so it's safe.
• Permissions can be scoped with the permissions key to only pull-requests: write (for commenting).

dotnet/aspnetcore Contribution Policy

From CONTRIBUTING.md and the PR template:

• Contributors must find an existing issue (labeled help wanted or good first issue) or open a new issue before submitting a PR.
• The PR template includes: "There's an open issue for the PR that you are making."
• PRs should reference the issue using Fixes #<number> format.
• PRs without prior agreement on scope/design are likely to be rejected.

mcp_github_add_comment_to_pending_review Tool

This tool adds a file/line-level review comment to an already-existing pending review. Key details:

• Required params: owner, repo, pullNumber, path, body, subjectType (FILE or LINE)
• Optional: line, side (LEFT/RIGHT), startLine, startSide (for multi-line comments)
• Prerequisite: A pending review must already exist before calling this tool. It cannot create a new review - it only appends comments to one.
• This is distinct from mcp_github_add_issue_comment which adds a top-level conversation comment (used for general PR comments, not inline code review).

---

Workflow

Here's the workflow implementing the contribution policy check:

Analyzing your answers...

Here's the complete workflow for dotnet/aspnetcore:

# .github/workflows/community-pr-check.yml
name: Community PR Contribution Policy Check

on:
  pull_request_target:
    types: [opened]

permissions:
  pull-requests: write

jobs:
  check-contribution-policy:
    runs-on: ubuntu-latest
    # Skip PRs authored by bots (e.g., dependabot, dotnet-maestro)
    if: github.event.pull_request.user.type != 'Bot'
    steps:
      - name: Check if author is an org member
        id: check-membership
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          AUTHOR="${{ github.event.pull_request.user.login }}"
          ORG="dotnet"

          # Check if the author is a member of the org
          # The API returns 204 for members, 404/302 for non-members
          HTTP_STATUS=$(curl -s -o /dev/null -w "%{http_cod...

</details>



<!-- START COPILOT CODING AGENT SUFFIX -->

Created from [VS Code](https://code.visualstudio.com/docs/copilot/copilot-coding-agent).

[javiercn]

This PR uses a traditional GitHub Actions workflow with shell scripts to parse issue references. Consider replacing it with a GitHub Agentic Workflow instead — a markdown file with YAML frontmatter that an AI coding agent interprets at runtime. This avoids brittle regex/grep logic and lets the agent reason about the PR body contextually.

Here's the suggested replacement for .github/workflows/community-pr-issue-check.md:

---
on:
  pull_request:
    types: [labeled]
    names: [community-contribution]
    forks: ["*"]

permissions:
  contents: read
  pull-requests: read

safe-outputs:
  add-comment:
    hide-older-comments: true
---

# Community PR Issue Check

You are reviewing pull request #${{ github.event.pull_request.number }} in the
`${{ github.repository }}` repository. This PR has been labeled
`community-contribution`.

Your task is to determine whether the PR body references a related GitHub issue
in this repository. This is required by the repository's contribution policy.

## Instructions

1. Read the body of PR #${{ github.event.pull_request.number }}.

2. Search the PR body for references to GitHub issues in this repository.
   Valid formats include:
   - Keyword-linked references such as `Fixes #123`, `Closes #123`,
     `Resolves #123`, `Addresses #123`, or `Related to #123`
   - Direct URL references such as
     `https://github.com/${{ github.repository }}/issues/123`
   - Plain `#123` references in context

3. For each candidate reference found, verify via the GitHub API that the
   referenced number is an **issue** (not a pull request) in the
   `${{ github.repository }}` repository.

4. Based on your findings:

   **If at least one valid issue reference exists**, call the `noop` tool:
   ```
   {"noop": {"message": "PR #<number> references issue #<issue>. No action needed."}}
   ```

   **If NO valid issue reference exists**, use the `add_comment` tool to post a
   comment on the triggering PR with the following content:

   - Thank the contributor for their interest in contributing to ASP.NET Core.
   - Explain that all community contributions are expected to have a
     corresponding GitHub issue **before** a pull request is submitted. This
     lets the team discuss the approach and ensure alignment with the project
     roadmap before significant effort is invested.
   - Link to the [Contributing Guide](https://github.com/dotnet/aspnetcore/blob/main/CONTRIBUTING.md)
     and specifically reference:
     - The **"Finding an issue to work on"** section — contributors should look
       for issues labeled [`help wanted`](https://aka.ms/aspnet/helpwanted)
       or [`good first issue`](https://aka.ms/aspnet/goodfirstissues).
     - The **"Before submitting the pull request"** section — which states
       contributors should _"find an existing issue with the 'help-wanted'
       label or discuss with the team to agree on adding a new issue with that
       label"_.
   - Ask the contributor to either:
     1. Edit the PR description to link an existing issue, or
     2. Open a new issue first describing the problem or feature, then update
        the PR description to reference it.
   - Be welcoming and encouraging — community contributions are valued.

If no action is needed, you MUST call the `noop` tool with a message explaining why:
{"noop": {"message": "No action needed: [brief explanation]"}}

Key differences from the current approach:

• No shell scripts or regex — the AI agent reads the PR body and reasons about issue references contextually, so it handles edge cases (e.g. issue URLs with anchors, references in markdown links, etc.) without brittle pattern matching.
• Read-only permissions — the agent never gets write access. The add-comment safe output is a validated, sandboxed write operation that runs in a separate job.
• hide-older-comments: true — if the PR is re-labeled (or re-run), stale comments from prior runs are automatically hidden.
• forks: ["*"] — community PRs typically come from forks; this ensures the workflow fires for them.
• names: [community-contribution] — triggers only when that specific label is applied, reusing the existing labeling automation.

To deploy: install gh aw (gh extension install github/gh-aw), place this file in .github/workflows/, run gh aw compile, and commit both the .md and .lock.yml.

[javiercn]

@copilot take a look at the comments

[Copilot]

This PR uses a traditional GitHub Actions workflow with shell scripts to parse issue references. Consider replacing it with a [GitHub Agentic Workflow](https://github.github.com/gh-aw/introduction/ove...

Switched this over to an agentic workflow at .github/workflows/community-pr-issue-check.md and removed the shell-based .yml in 2a9a76a, with a small follow-up cleanup in 8bbf667.

@copilot take a look at the comments

Addressed in 2a9a76a, with a follow-up cleanup in 8bbf667.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• github.github.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[javiercn]

@akoeplinger can you take a look?

[Copilot]

Pull request overview

Adds a GitHub Agentic Workflow to enforce the repo policy that community-contribution PRs should link an associated issue, by inspecting the PR body and posting guidance when no valid issue reference is found.

Changes:

• Introduces an agentic workflow prompt for checking whether a community PR references a valid issue in dotnet/aspnetcore.
• Configures safe outputs to either noop when an issue is present or add a guidance comment when missing.