SERVERLESS PUPPETEER WITH METAMASK

This serverless lambda will connect to a Browserless instance with Metamask Extension installed, with this you can use Puppeteer with Metamask support to automate Web3 tasks such as sending transactions, scraping data from Dapps, sign transactions etc..

Beware of the use of Metamask with your seed phrases, private keys, you should consider your own secure setup.

Install the dependencies

yarn install

Start the offline mode

yarn serverless

Modify the profile in Serverless.yml to use your AWS profile, then you can deploy to AWS

#yarn sls deploy

CI/CD DEPLOYMENT

Alternatively I use SEED.run for all my Lambda deployments, there you can configure your CI/CD pipeline and use the Secret Manager for your seed phrases.

Commit to the master branch and SEED will handle the CI/CD Deploy
.Env Variables are stored in SEED for production in the AWS Secret Manager

DEPENDENCIES

• Serverless
• Webpack 4
• Typescript
• Browserless Docker Version
• Some functions have been foked from the Chain Link Dappteer Repo

BROWSERLESS LOCAL SETUP

docker run \
  -e "TOKEN=2cbc5771-38f2-4dcf-8774-50ad5123-Puppeteer-metamask" \
  -e "CONNECTION_TIMEOUT=520000" \
  -e "MAX_CONCURRENT_SESSIONS=50" \
  -e "METRICS_JSON_PATH=/home/browserless/metrics.json" \      
  -e "WORKSPACE_DIR=/home/browserless" \
  -v "/$PWD/home/browserless:/home/browserless"  -p 3001:3000  --restart always  \
  -d \
  --name browserless browserless/chrome

OR

  docker run -e "TOKEN=2cbc5771-38f2-4dcf-8774-50ad5123-Puppeteer-metamask" -e "CONNECTION_TIMEOUT=520000" -e "MAX_CONCURRENT_SESSIONS=50" -e "METRICS_JSON_PATH=/home/browserless/metrics.json" -e "WORKSPACE_DIR=/home/browserless" -v "/$PWD/home/browserless:/home/browserless"  -p 3001:3000  --restart always -d --name browserless browserless/chrome

  docker ps

  docker exec -it CONTAINER_ID bash

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For more information about the complete setup check the following Medium Post