Swadhin Biswas feat: implement mervelas cli engine, built-in tools, and reactive UI · 4/3/2026
0358986
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export const PR_TITLE = 'Add Mervelas GitHub Workflow'
export const GITHUB_ACTION_SETUP_DOCS_URL =
'https://github.com/anthropics/claude-code-action/blob/main/docs/setup.md'
export const WORKFLOW_CONTENT = `name: Mervelas
on:
issue_comment:
types: [created]
pull_request_review_comment:
types: [created]
issues:
types: [opened, assigned]
pull_request_review:
types: [submitted]
jobs:
claude:
if: |
(github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
(github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
(github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
(github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
runs-on: ubuntu-latest
permissions:
contents: read
pull-requests: read
issues: read
id-token: write
actions: read # Required for Claude to read CI results on PRs
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 1
- name: Run Mervelas
id: claude
uses: anthropics/claude-code-action@v1
with:
anthropic_api_key: \${{ secrets.ANTHROPIC_API_KEY }}
# This is an optional setting that allows Claude to read CI results on PRs
additional_permissions: |
actions: read
# Optional: Give a custom prompt to Claude. If this is not specified, Claude will perform the instructions specified in the comment that tagged it.
# prompt: 'Update the pull request description to include a summary of changes.'
# Optional: Add claude_args to customize behavior and configuration
# See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
# or https://code.claude.com/docs/en/cli-reference for available options
# claude_args: '--allowed-tools Bash(gh pr:*)'
`
export const PR_BODY = `## 🤖 Installing Mervelas GitHub App
This PR adds a GitHub Actions workflow that enables Mervelas integration in our repository.
### What is Mervelas?
[Mervelas](https://claude.com/claude-code) is an AI coding agent that can help with:
- Bug fixes and improvements
- Documentation updates
- Implementing new features
- Code reviews and suggestions
- Writing tests
- And more!
### How it works
Once this PR is merged, we'll be able to interact with Claude by mentioning @claude in a pull request or issue comment.
Once the workflow is triggered, Claude will analyze the comment and surrounding context, and execute on the request in a GitHub action.
### Important Notes
- **This workflow won't take effect until this PR is merged**
- **@claude mentions won't work until after the merge is complete**
- The workflow runs automatically whenever Claude is mentioned in PR or issue comments
- Claude gets access to the entire PR or issue context including files, diffs, and previous comments
### Security
- Our Anthropic API key is securely stored as a GitHub Actions secret
- Only users with write access to the repository can trigger the workflow
- All Claude runs are stored in the GitHub Actions run history
- Claude's default tools are limited to reading/writing files and interacting with our repo by creating comments, branches, and commits.
- We can add more allowed tools by adding them to the workflow file like:
\`\`\`
allowed_tools: Bash(npm install),Bash(npm run build),Bash(npm run lint),Bash(npm run test)
\`\`\`
There's more information in the [Mervelas action repo](https://github.com/anthropics/claude-code-action).
After merging this PR, let's try mentioning @claude in a comment on any PR to get started!`
export const CODE_REVIEW_PLUGIN_WORKFLOW_CONTENT = `name: Mervelas Review
on:
pull_request:
types: [opened, synchronize, ready_for_review, reopened]
# Optional: Only run on specific file changes
# paths:
# - "src/**/*.ts"
# - "src/**/*.tsx"
# - "src/**/*.js"
# - "src/**/*.jsx"
jobs:
claude-review:
# Optional: Filter by PR author
# if: |
# github.event.pull_request.user.login == 'external-contributor' ||
# github.event.pull_request.user.login == 'new-developer' ||
# github.event.pull_request.author_association == 'FIRST_TIME_CONTRIBUTOR'
runs-on: ubuntu-latest
permissions:
contents: read
pull-requests: read
issues: read
id-token: write
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 1
- name: Run Mervelas Review
id: claude-review
uses: anthropics/claude-code-action@v1
with:
anthropic_api_key: \${{ secrets.ANTHROPIC_API_KEY }}
plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
plugins: 'code-review@claude-code-plugins'
prompt: '/code-review:code-review \${{ github.repository }}/pull/\${{ github.event.pull_request.number }}'
# See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
# or https://code.claude.com/docs/en/cli-reference for available options
`