Github Pr Create

When to Use This Skill

ZERO-SPECULATION RULE (read this FIRST)

Once this skill is triggered, do NOT spend ANY tokens analyzing the hostname, guessing the platform, or debating whether gh will work. The correct behavior is:

1. User wants to create a PR → skill is triggered
2. Run gh commands → let gh succeed or fail
3. If gh fails → report the error and suggest gh auth login --hostname

WRONG behavior (NEVER do this):

• "This appears to be a self-hosted GitLab instance" — WRONG, you don't know that
• "git.company.com looks like GitLab" — WRONG, it could be GitHub Enterprise
• "gh CLI won't work with this host" — WRONG, you haven't tried yet
• Any reasoning about whether the host is GitHub, GitLab, Bitbucket, etc. — WRONG

Trigger conditions

Trigger this skill when the user wants to create a Pull Request:

• "create PR" / "create a PR" / "create pull request"
• "提PR" / "创建PR" / "开PR" / "提交PR" / "发PR"
• "帮我提个PR" / "PR提一下" / "提一下PR"
• "gh pr create" / "submit PR" / "open PR"
• "push and create PR" / "push + PR"
• "create PR to main" / "create PR from this branch"

NOT a trigger (do NOT invoke this skill):

• User asks to "review a PR" — use github-code-review-pr
• User asks to "view PR" or "list PRs" — use gh-operations
• User asks for local git operations — use plain git

Security — MANDATORY rules for AI agents

1. NEVER echo, print, or log the values of any environment variable containing credentials (GH_TOKEN, GITHUB_TOKEN, etc.). Do NOT run commands like echo $GH_TOKEN or printenv GITHUB_TOKEN — even for debugging.
2. NEVER pass token/credential values as inline CLI arguments or env-var overrides. gh reads credentials from its own config — just run gh commands directly.
3. When debugging auth errors, rely solely on gh auth status output and gh error messages. Do NOT attempt to verify tokens by reading or printing them.
4. NEVER extract credentials from OS credential stores or config files. Strictly forbidden commands include:

• security find-internet-password, security find-generic-password (macOS Keychain)
• git credential fill, cat ~/.git-credentials, cat ~/.netrc
• Reading ~/.config/gh/hosts.yml or any gh auth config file
• Any command that outputs a password, token, or secret value from any credential store

1. NEVER use extracted credential values in commands. Do NOT manually construct authenticated requests (e.g. curl -H "Authorization: token "). The gh CLI handles all authentication internally — use gh api for API calls instead of curl with raw tokens.

Runtime requirements

• GitHub CLI (gh) installed and authenticated
• git CLI installed
• Must be inside a git repository with a remote pointing to GitHub (or GitHub Enterprise)
• Run skills-check github-pr-create to verify dependencies

Implementation

Step 1: Pre-flight Validation

1a. Verify current branch is NOT the main/default branch

This is a hard blocker — do NOT proceed if the user is on the default branch.

# Detect default branch
DEFAULT_BRANCH=$(git symbolic-ref refs/remotes/origin/HEAD --short 2>/dev/null | sed 's|origin/||')
if [ -z "$DEFAULT_BRANCH" ]; then
  DEFAULT_BRANCH=$(git remote show origin 2>/dev/null | grep 'HEAD branch' | awk '{print $NF}')
fi
if [ -z "$DEFAULT_BRANCH" ]; then
  DEFAULT_BRANCH="main"
fi

CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)

if [ "$CURRENT_BRANCH" = "$DEFAULT_BRANCH" ]; then
  echo "ERROR: You are on the default branch ($DEFAULT_BRANCH). Cannot create a PR from the default branch."
  echo "Please switch to a feature branch first."
  exit 1
fi

If the user is on the default branch, stop immediately and tell them they need to be on a feature/topic branch.

1b. Check for unpushed commits

git status
git log origin/$CURRENT_BRANCH..HEAD --oneline 2>/dev/null

If there are unpushed commits, push the branch before creating the PR:

git push -u origin "$CURRENT_BRANCH"

If the remote branch does not exist yet, git push -u origin HEAD will create it.

1c. Determine the base branch (merge target)

• If the user explicitly specifies a target branch (e.g., "create PR to develop"), use that branch.
• Otherwise, use the detected default branch ($DEFAULT_BRANCH).

Step 2: Gather PR Context

2a. Collect commit information

git log origin/$DEFAULT_BRANCH..HEAD --pretty=format:"%h %s" --no-merges

This shows all commits that will be included in the PR.

2b. Collect diff summary

git diff origin/$DEFAULT_BRANCH..HEAD --stat

2c. Read full diff for PR body generation

git diff origin/$DEFAULT_BRANCH..HEAD

Use this to understand the actual code changes for filling in the PR template.

Step 3: Detect and Load PR Template

MANDATORY: Use the bundled template detection script

python3 scripts/detect_pr_template.py

How to locate the script:

Check these fixed paths in order. Use the first one that exists:

import pathlib, subprocess, sys

candidates = [
    pathlib.Path.home() / ".config/opencode/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".claude/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".copilot/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".cursor/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".gemini/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".codex/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".qwen/skills/github-pr-create/scripts/detect_pr_template.py",
    pathlib.Path.home() / ".grok/skills/github-pr-create/scripts/detect_pr_template.py",
]
script = next((p for p in candidates if p.exists()), None)

The script checks these locations (in order) for PR templates:

1. .github/pull_request_template.md
2. .github/PULL_REQUEST_TEMPLATE.md
3. pull_request_template.md
4. PULL_REQUEST_TEMPLATE.md
5. .github/PULL_REQUEST_TEMPLATE/ directory (multiple templates)
6. docs/pull_request_template.md

Machine-readable output:

• TEMPLATE_FOUND=true|false
• TEMPLATE_PATH= — relative path to the template file
• TEMPLATE_CONTENT= — base64-encoded template content
• MULTIPLE_TEMPLATES=true|false — whether multiple templates exist
• TEMPLATE_NAMES= — names of available templates (when multiple)

Fallback: Manual template detection

If the script is not found, check template paths manually:

for f in .github/pull_request_template.md .github/PULL_REQUEST_TEMPLATE.md pull_request_template.md PULL_REQUEST_TEMPLATE.md docs/pull_request_template.md; do
  if [ -f "$f" ]; then
    echo "TEMPLATE_FOUND=true"
    echo "TEMPLATE_PATH=$f"
    break
  fi
done

Step 4: Fill PR Title and Body

4a. Generate PR title

The PR title MUST follow the same format as commit messages — see [code-review-staged/references/commit-format.md](../code-review-staged/references/commit-format.md) for the canonical rules. This keeps PR titles and commit messages consistent across the codebase.

Quick summary (full rules in commit-format.md):

• Format: [scope]: — single line, max 72 characters
• ` from branch prefix: feat/ → feat, fix/ → fix`, etc.
• [scope] auto-derived from branch name:
• // → scope = JIRA key (e.g. feat[XYZ-123]: add export endpoint)
• / with title ≤ 30 chars → scope = lowercase-hyphenated title
• / with title > 30 chars → apply long-title compression (see commit-format.md)
• -iter-N is stripped from scope; -vN is kept
• Bare branches (master/main/dev) → no scope, use type: subject
• ``: imperative mood, lowercase first letter, no period, English
• NEVER use the repo name as scope — repo identity is already in the PR metadata

When the PR has multiple commits, use the same scope (derived from the branch name) and write a subject that summarizes the whole PR's intent.

Examples:

• Branch feat/XYZ-123/Add-Export → PR title feat[XYZ-123]: add CSV and JSON export endpoints
• Branch feat/Dark-Mode-Toggle → PR title feat[dark-mode-toggle]: add theme switcher in settings
• Branch feat/Dark-Mode-Toggle-v2 → PR title feat[dark-mode-toggle-v2]: add follow-system option
• Branch master → PR title chore: bump version to 1.2.0 (no scope)

4b. Fill PR body

If a PR template was found (Step 3):

Fill the template with information from the code changes. Follow these rules strictly:

1. Sections you CAN fill automatically — fill them based on the diff and commit messages:

• Summary / Description / What — describe what the PR does based on actual code changes
• Changes / What changed — list the key changes
• Type of change — check the appropriate checkbox based on the nature of changes (bug fix, feature, refactor, etc.)
• Testing / How to test — describe what was tested if evident from the diff (e.g., new test files added)

1. Sections you MUST NOT modify unless you have the information:

• Screenshots / Screen recordings — leave as-is (AI cannot capture screenshots)
• Jira ticket / Issue link — only fill if the user provided it, or if the branch name contains a ticket ID (e.g., feat/XYZ-123/...)
• Tech doc / Design doc links — only fill if the user provided them
• Reviewer checklist — leave as-is for the reviewer
• Any placeholder with [link], [url], [screenshot] — leave the placeholder text as-is

1. When in doubt, preserve the template's original text. The user can edit it on the web afterwards. It is better to leave a placeholder than to fill in incorrect information.

If no PR template was found:

Generate a reasonable PR body:

## Summary

## Changes

- 
- 
- ...

4c. Language matching

Match the PR body language to the template language if a template is used. If no template, match the user's input language.

Step 5: Create the PR

Using gh pr create

gh pr create \
  --base "$BASE_BRANCH" \
  --head "$CURRENT_BRANCH" \
  --title "$PR_TITLE" \
  --body "$PR_BODY"

Additional options based on user request:

• --draft — if user wants a draft PR
• --reviewer — if user specifies reviewers
• --label — if user specifies labels
• --assignee @me — if user wants to self-assign

For GitHub Enterprise (custom host):

gh auto-detects the host from the git remote — no special handling needed. If auth fails, suggest:

gh auth login --hostname 

Step 6: Output Result

On success, output the PR URL clearly:

PR created successfully: https://github.com/owner/repo/pull/123

The PR URL is the most important output — make sure the user can see it and click on it.

On failure, report the error and suggest fixes:

• Auth failure → gh auth login
• Branch not pushed → git push -u origin HEAD
• No commits → explain that there are no changes to create a PR for

Error Handling

• Host handling rule (MANDATORY): Never pre-stop or branch based on host/domain text. Always run gh commands directly.
• gh host/auth error on unknown domain: Tell the user:

1. This host might be GitHub Enterprise — run gh auth login --hostname to authenticate
2. If it's not GitHub at all, this skill only supports GitHub (including GHE)

• Do NOT assume the host is "GitLab" or any other platform.
• On default branch: Report clearly that PRs cannot be created from the default branch.
• No remote: Suggest git remote add origin or verify the remote is set up.
• Merge conflicts with base: Warn the user about potential conflicts but still create the PR. GitHub will show conflict status.
• Auth failure — ONLY allowed recovery steps:

1. Report the gh error message to the user
2. Suggest gh auth login --hostname
3. Suggest gh auth status --hostname to check current auth state
4. Stop and wait for the user to fix auth

FORBIDDEN recovery attempts (violate Security rules): Do NOT search for credentials in macOS Keychain, git credential stores, .netrc, or any other credential storage.

Examples

Example 1: Simple PR creation (English)

User input: "Create a PR" Action: Check branch → push if needed → detect template → fill body → gh pr create → output URL Output: PR created successfully: https://github.com/owner/repo/pull/42

Example 2: PR with target branch (Chinese)

User input: "帮我提个PR到develop分支" Action: Check branch → push → use develop as base → fill body in Chinese → create PR Output: PR 创建成功: https://github.com/owner/repo/pull/43

Example 3: Draft PR with reviewer

User input: "Create a draft PR and add @alice as reviewer" Action: Push → fill body → gh pr create --draft --reviewer alice Output: Draft PR created: https://github.com/owner/repo/pull/44

Example 4: PR with Jira context

User input: "Create a PR, the Jira ticket is PROJ-456" Action: Push → fill template with Jira link → create PR Output: PR created successfully: https://github.com/owner/repo/pull/45

Example 5: GitHub Enterprise

User input: "帮我在 git.mycompany.com 提个PR" Action: Run gh pr create directly → if auth error, suggest gh auth login --hostname git.mycompany.com WRONG behavior: Saying "this might not be GitHub" — NEVER do this

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: jie-meng
• Source: jie-meng/mythril-agent-skills
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.