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MultiBaas by Curvegrid is a blockchain middleware platform that wraps your smart contracts in a REST API and advanced feature toolkit. It handles contract management, transaction signing, event indexing, and webhook delivery so you can focus on building your application without managing low-level blockchain infrastructure.

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Key Features

  • REST API — interact with any linked smart contract over HTTPS using standard HTTP clients or the TypeScript/Go SDK
  • Contract Management — deploy, link, and manage contracts via the dashboard or API; import ABIs from Blockscout or Etherscan by address
  • Event Webhooks — receive real-time HTTP callbacks whenever a contract event is emitted on-chain
  • Cloud Wallets — server-side signing via Azure Key Vault (AWS KMS and Google Cloud KMS available on request)
  • Transaction Manager — monitors Cloud Wallet transactions and auto-resubmits stuck transactions
  • Event Indexing — built-in indexer with a query and aggregation API for historical event data
  • Framework Plugins — Hardhat and Foundry Forge plugins to automate contract uploads during deployment

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Getting Started

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1. Create a Deployment

  1. Sign up at console.curvegrid.com using Google, GitHub, Microsoft, or email
  2. Click New Deployment
  3. Enter a label, description, and select Celo (Mainnet or Sepolia) as the network
The network cannot be changed after a deployment is created. Create separate deployments for mainnet and testnet environments. Your deployment will be available at https://<deployment-id>.multibaas.com.

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2. Generate an API Key

In your deployment, go to Admin → API Keys → New Key. MultiBaas has multiple key types with different permission levels. The most frequently used are Administrator and DApp User:
Key TypeUse Case
AdministratorServer-side code only, full deployment control
DApp UserSafe to use in frontend apps, read-only and unsigned transaction composition
Never expose an Administrator key in client-side code.

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3. Configure CORS (Frontend Apps)

If you are building a frontend application, add your origin at Admin → CORS.

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Resources