Gno Package Deployment and Call Process

Prerequisites

• Make sure you have Gno CLI tools installed (gnokey, gnodev, etc).
• Start a local Gno node for development:

gnodev start --chainid dev

• Create and fund a key for signing transactions:

gnokey add MyKey
# Fund MyKey with test tokens if needed

• Confirm your node is running and accessible at http://127.0.0.1:26657.

This document summarizes the steps and commands used to deploy and interact with a Gno package on a local Gno.land blockchain.

1. Prepare the Package Directory

• Ensure your Gno source code is in the directory example/p.
• Example file: hello_world.gno with:

package hello_world

func Hello() string {
  return "Hello, world!"
}

2. Create gnomod.toml

• Required fields:

gno_version = "0.9"
module = "gno.land/p/hello_world"
package = "gno.land/p/hello_world"

• Place this file in the example/p directory.

3. Deploy the Package

• Use the following command to deploy the package:

gnokey maketx addpkg \
  -pkgpath "gno.land/p/hello_world" \
  -pkgdir "example/p" \
  -gas-fee 10000000ugnot \
  -gas-wanted 8000000 \
  -broadcast \
  -chainid dev \
  -remote "http://127.0.0.1:26657" \
  MyKey

• Enter your password when prompted.
• If you see errors about missing or invalid gnomod.toml, ensure the file exists and contains all required fields.

4. Call the Deployed Function

• To call the Hello function in your package:

gnokey maketx call \
  -pkgpath "gno.land/p/hello_world" \
  -func "Hello" \
  -gas-fee 10000000ugnot \
  -gas-wanted 2000000 \
  -chainid dev \
  -remote "http://127.0.0.1:26657" \
  MyKey

• The output will show the transaction details. If successful, your function is callable on-chain.

Notes

• The process requires a running Gno.land node at http://127.0.0.1:26657.
• All commands assume you have a key named MyKey configured.
• Errors about missing fields or incorrect versions in gnomod.toml must be fixed before deployment will succeed.

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