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https://github.com/tendermint/faucet

A faucet for cosmos-sdk apps that uses the app binary only
https://github.com/tendermint/faucet

Last synced: about 2 months ago
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A faucet for cosmos-sdk apps that uses the app binary only

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# faucet

A faucet that uses [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) executable binaries only.

The main purpose of this `faucet` is to avoid using RPC or API endpoints, and use the CLI binary instead, more
specifically, the commands:

```bash
$ {app}d tx bank send
```

and:

```bash
$ {app}d query txs
```

Since the faucet only uses the CLI binary, it is compatible with practically any blockchain built with
[cosmos-sdk](https://github.com/cosmos/cosmos-sdk) even if different types of keys are used (such as in
[ethermint](https://github.com/cosmos/ethermint) for example).

## Installation

### Using cURL

```bash
$ curl https://get.starport.network/faucet! | bash
```

### Use docker image

Use docker image `ghcr.io/tendermint/faucet`. You can use it in a Kubernetes pod with
[shareProcessNamespace](https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/#configure-a-pod)
or mount the chain binary using docker:

```bash
$ docker run -it -v ~/go/bin/gaiad:/usr/local/bin/gaiad ghcr.io/tendermint/faucet
```

### From Source

You can build the faucet with:

```bash
$ make build
```

The executable binary will be avaialable in the `./build/` directory. To install it to `$GOPATH/bin`, use instead:

```bash
$ make install
```

## Usage

### Configuration

You can configure the faucet either using command line flags or environment variables. The following table
shows the available configuration options and respective defaults:

| flag | env | description | default |
|---------------------|-------------------|-------------------------------------------------------------- |-----------|
| port | PORT | tcp port where faucet will be listening for requests | 8000 |
| account-name | ACCOUNT_NAME | name of the account to be used by the faucet | faucet |
| mnemonic | MNEMONIC | mnemonic for restoring an account | |
| keyring-password | KEYRING_PASSWORD | password for accessing keyring | |
| cli-name | DENOMS | denomination of the coins sent by default (comma separated) | uatom |
| credit-amount | CREDIT_AMOUNT | amount to credit in each request | 10000000 |
| max-credit | MAX_CREDIT | maximum credit per account | 100000000 |
| sdk-version | SDK_VERSION | version of sdk (launchpad or stargate) | stargate |
| node | NODE | address of tendermint RPC endpoint for this chain | |
| keyring-backend | KEYRING_BACKEND | keyring backend to be used | |
| legacy-send | LEGACY_SEND | whether to use legacy send command | false |
| coin-type | COIN_TYPE | registered coin type number for HD derivation (BIP-0044) | 118 |
| home | HOME | replaces the default home used by the chain | |
| | | | |

### [gaia](https://github.com/cosmos/gaia) example

This faucet options default to work with [gaia](https://github.com/cosmos/gaia). So you can start the faucet with just:

```bash
$ faucet --keyring-password 12345678
INFO[0000] listening on :8000
```

or, with environment variables:

```bash
$ export KEYRING_PASSWORD=12345678
$ faucet
INFO[0000] listening on :8000
```

### [ethermint](https://github.com/cosmos/ethermint) example

Start the faucet with:

```bash
$ faucet --cli-name ethermintcli --denoms ueth --keyring-password 12345678 --sdk-version launchpad
INFO[0000] listening on :8000
```

or, with environment variables:

```bash
$ export CLI_NAME=ethermintcli
$ export SDK_VERSION=launchpad
$ export DENOMS=ueth
$ export KEYRING_PASSWORD=12345678
$ faucet
INFO[0000] listening on :8000
```

### [wasmd](https://github.com/CosmWasm/wasmd) example

Start the faucet with:

```bash
$ faucet --cli-name wasmcli --denoms ucosm --keyring-password 12345678
INFO[0000] listening on :8000
```

or, with environment variables:

```bash
$ export CLI_NAME=wasmcli
$ export DENOMS=ucosm
$ export KEYRING_PASSWORD=12345678
$ faucet
INFO[0000] listening on :8000
```

### Request tokens

You can request tokens by sending a `POST` request to the faucet, with a key address in a `JSON`:

```bash
$ curl -X POST -d '{"address": "cosmos1kd63kkhtswlh5vcx5nd26fjmr9av74yd4sf8ve"}' http://localhost:8000
{"transfers":[{"coin":"10000000uatom","status":"ok"}]}
```

For requesting specific coins, use:

```bash
$ curl -X POST -d '{"address": "cosmos1kd63kkhtswlh5vcx5nd26fjmr9av74yd4sf8ve", "coins": ["10uatom", "20ueth"]}' http://localhost:8000
{"transfers":[{"coin":"10uatom","status":"ok"}, {"coin":"20ueth","status":"ok"}]}
```