> ## Documentation Index
> Fetch the complete documentation index at: https://docs.base.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Printr

> Launch cross-chain tokens through Printr's HTTP API and Base MCP send_calls.

Printr is a cross-chain token launchpad where a creator deploys a token and seeds initial liquidity in one transaction. The plugin quotes launch cost, builds unsigned creation calldata through Printr's HTTP API, and submits the result with Base MCP `send_calls`.

**Chains:** Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, and Ethereum.

**Operations:** launch quotes, token creation, deployment status checks, cross-chain launch setup, and initial-buy configuration.

<Tip>
  **Multi-chain launchpad.** Printr uses CAIP chain identifiers in API payloads, then maps returned payloads back to Base MCP chain names for `send_calls`.
</Tip>

## Try it

```text Launch theme={null}
Launch a memecoin called Doge Supreme (DSUP) on Base
```

```text Quote theme={null}
What would it cost to launch on Base and Arbitrum?
```

```text Status theme={null}
Did my token deploy on every chain?
```

## Pattern

The assistant calls `/print/quote` first, shows per-chain and combined launch cost, then calls `/print` only after confirmation and valid token metadata. The returned `payload.to` includes a CAIP chain prefix, `payload.calldata` is base64, and `payload.value` is decimal wei.

The assistant strips the `eip155:<chainId>:` prefix from `to`, base64-decodes calldata to hex, converts value to hex, maps the chain ID to a Base MCP chain string, and submits `send_calls`.

## Reference

<Card title="Full plugin spec on GitHub" icon="github" href="https://github.com/base/skills/blob/master/skills/base-mcp/plugins/printr.md">
  Quote schema, print schema, payload transforms, supported chains, and token metadata constraints.
</Card>