Local Bot Setup
October 7, 2025 ยท View on GitHub
IMPORTANT: Please uninstall the production bot from your user account before continuing (otherwise multiple bots will respond to your comments)
To get your app running against GitHub
1. Create a GitHub App for testing
1.1 Go to your github developer settings
1.2 Create a new github app
Required fields are:
name, which can be whatever you like, globally unique on githubhomepage url, which can be set to anythingwebhook url, which can be set to anything
Important fields are:
webhook secret, set this todevelopmentPermissionswhich should be set as defined in the app.yml, e.g. set read & write forRepository contents,IssuesandPull Requests, and read forRepository MetadataSubscribe to Eventswhich should be set as defined in the app.yml, e.g. check the checkbox forIssue comment- Ensure
Where can this GitHub App be installed?is set toonly this account
2. Configure Your GitHub App for testing
You should now have an app created

- On the General Tab, Click
Generate Private Keyand download it for later usage, call it something likeallcontributorsbot.pem - On the Install Tab, Install the app/bot on your user
3. Configure Your local to talk to the github app
Create a file named .env with the following template:
APP_ID=
WEBHOOK_SECRET=development
PRIVATE_KEY=
Values
APP_ID, you can get this from the General tab on the developer settings for your appWEBHOOK_SECRET, leave as development (you set this on app setup)PRIVATE_KEYwhen you generated the private key from your app, you should have aallcontributorsbot.pemfile locally (or similar). runopenssl base64 < allcontributorsbot.pem | tr -d '\n' | pbcopyon the file which will copy the base64 contents onto your clipboard, paste that into the line forPRIVATE_KEY
4. Setup a test GitHub repository/with issues PR
- Setup a repository under your name (the name on github where the bot is installed)
- Enable issues and pull requests
- Create an issue
- Comment on the issue:
@all-contributors please add @jakebolam for design(replace @jakebolam with your username)
To verify if the bot should have seen this goto your app settings. On the Advanced Tab, Click the most recent deliver to see the payload. It should look something like this:
. Copy the payload and save it locally in a file called test-webhook-payload.json. Also make note of the headers under the 'Headers' section.
5. Send your first hook
- Install the node modules for the bot
yarn install - Run the bot
yarn start - Curl the bot (or use Postman, using the headers you got from the previous step and the content from
test-webhook-payload.json) If you're usingcurl, this will look something like this:
curl -vX POST http://localhost:3000/ -d @test-webhook-payload.json \
--header "Content-Type: application/json" \
--header "User-Agent: GitHub-Hookshot/4d63832" \
--header "X-GitHub-Delivery: 413857f0-8b61-11eb-92be-566b7aa5f6ee" \
--header "X-GitHub-Event: issue_comment" \
--header "X-GitHub-Hook-ID: 297478976" \
--header "X-GitHub-Hook-Installation-Target-ID: 105785" \
--header "X-GitHub-Hook-Installation-Target-Type: integration" \
--header "X-Hub-Signature: sha1=ed222e6750dc2954a422ed8dd371f9da66368104" \
--header "X-Hub-Signature-256: sha256=04d0943f20545ac8df974466c502e4b9743d3618149b03f4ea1a9e658bf31fd0"
If there are no errors in the bot console, check your github test issue to see the bot respond :tada:
Using smee.io
Alternatively, instead of having to mock the webhook payload using curl, you can add an additional environment variable called WEBHOOK_PROXY_URL and set it to a smee.io channel URL.
Once you've done that, set the Webhook URL for you app in GitHub to the same channel URL and, after a server restart, your bot will be able to directly respond to incoming webhooks.