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# opencode GitHub Action
A GitHub Action that integrates [opencode](https://opencode.ai) directly into your GitHub workflow.
Mention `/opencode` in your comment, and opencode will execute tasks within your GitHub Actions runner.
## Features
#### Explain an issues
Leave the following comment on a GitHub issue. `opencode` will read the entire thread, including all comments, and reply with a clear explanation.
```
/opencode explain this issue
```
#### Fix an issues
Leave the following comment on a GitHub issue. opencode will create a new branch, implement the changes, and open a PR with the changes.
```
/opencode fix this
```
#### Review PRs and make changes
Leave the following comment on a GitHub PR. opencode will implement the requested change and commit it to the same PR.
```
Delete the attachment from S3 when the note is removed /oc
```
#### Review specific code lines
Leave a comment directly on code lines in the PR's "Files" tab. opencode will automatically detect the file, line numbers, and diff context to provide precise responses.
```
[Comment on specific lines in Files tab]
/oc add error handling here
```
When commenting on specific lines, opencode receives:
- The exact file being reviewed
- The specific lines of code
- The surrounding diff context
- Line number information
This allows for more targeted requests without needing to specify file paths or line numbers manually.
## Installation
Run the following command in the terminal from your GitHub repo:
```bash
opencode github install
```
This will walk you through installing the GitHub app, creating the workflow, and setting up secrets.
### Manual Setup
1. Install the GitHub app https://github.com/apps/opencode-agent. Make sure it is installed on the target repository.
2. Add the following workflow file to `.github/workflows/opencode.yml` in your repo. Set the appropriate `model` and required API keys in `env`.
```yml
name: opencode
on:
issue_comment:
types: [created]
pull_request_review_comment:
types: [created]
jobs:
opencode:
if: |
contains(github.event.comment.body, '/oc') ||
contains(github.event.comment.body, '/opencode')
runs-on: ubuntu-latest
permissions:
id-token: write
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 1
- name: Run opencode
uses: sst/opencode/github@latest
env:
ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
with:
model: anthropic/claude-sonnet-4-20250514
```
3. Store the API keys in secrets. In your organization or project **settings**, expand **Secrets and variables** on the left and select **Actions**. Add the required API keys.
## Support
This is an early release. If you encounter issues or have feedback, please create an issue at https://github.com/sst/opencode/issues.
## Development
To test locally:
1. Navigate to a test repo (e.g. `hello-world`):
```bash
cd hello-world
```
2. Run:
```bash
MODEL=anthropic/claude-sonnet-4-20250514 \
ANTHROPIC_API_KEY=sk-ant-api03-1234567890 \
GITHUB_RUN_ID=dummy \
MOCK_TOKEN=github_pat_1234567890 \
MOCK_EVENT='{"eventName":"issue_comment",...}' \
bun /path/to/opencode/github/index.ts
```
- `MODEL`: The model used by opencode. Same as the `MODEL` defined in the GitHub workflow.
- `ANTHROPIC_API_KEY`: Your model provider API key. Same as the keys defined in the GitHub workflow.
- `GITHUB_RUN_ID`: Dummy value to emulate GitHub action environment.
- `MOCK_TOKEN`: A GitHub personal access token. This token is used to verify you have `admin` or `write` access to the test repo. Generate a token [here](https://github.com/settings/personal-access-tokens).
- `MOCK_EVENT`: Mock GitHub event payload (see templates below).
- `/path/to/opencode`: Path to your cloned opencode repo. `bun /path/to/opencode/github/index.ts` runs your local version of `opencode`.
### Issue comment event
```
MOCK_EVENT='{"eventName":"issue_comment","repo":{"owner":"sst","repo":"hello-world"},"actor":"fwang","payload":{"issue":{"number":4},"comment":{"id":1,"body":"hey opencode, summarize thread"}}}'
```
Replace:
- `"owner":"sst"` with repo owner
- `"repo":"hello-world"` with repo name
- `"actor":"fwang"` with the GitHub username of commenter
- `"number":4` with the GitHub issue id
- `"body":"hey opencode, summarize thread"` with comment body
### Issue comment with image attachment.
```
MOCK_EVENT='{"eventName":"issue_comment","repo":{"owner":"sst","repo":"hello-world"},"actor":"fwang","payload":{"issue":{"number":4},"comment":{"id":1,"body":"hey opencode, what is in my image "}}}'
```
Replace the image URL `https://github.com/user-attachments/assets/xxxxxxxx` with a valid GitHub attachment (you can generate one by commenting with an image in any issue).
### PR comment event
```
MOCK_EVENT='{"eventName":"issue_comment","repo":{"owner":"sst","repo":"hello-world"},"actor":"fwang","payload":{"issue":{"number":4,"pull_request":{}},"comment":{"id":1,"body":"hey opencode, summarize thread"}}}'
```
### PR review comment event
```
MOCK_EVENT='{"eventName":"pull_request_review_comment","repo":{"owner":"sst","repo":"hello-world"},"actor":"fwang","payload":{"pull_request":{"number":7},"comment":{"id":1,"body":"hey opencode, add error handling","path":"src/components/Button.tsx","diff_hunk":"@@ -45,8 +45,11 @@\n- const handleClick = () => {\n- console.log('clicked')\n+ const handleClick = useCallback(() => {\n+ console.log('clicked')\n+ doSomething()\n+ }, [doSomething])","line":47,"original_line":45,"position":10,"commit_id":"abc123","original_commit_id":"def456"}}}'
```
|
