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

# Protochain

> Language-agnostic gRPC APIs for Solana. Access any SDK from any language.

## Best Solana SDK not in your language?

The best Solana SDKs are written in Rust and TypeScript. If you're building in Go — or any other language — you're working around the ecosystem rather than with it.

Protochain wraps Solana SDK operations behind a gRPC API. Your language connects to the Protochain server; the server handles the Solana SDK calls. You get the full SDK surface in Go, Rust, TypeScript, or any language with gRPC support.

<Columns cols={2}>
  <Card title="Get Started" icon="rocket" href="/guides/quickstart">
    Connect to Protochain and make your first API call in under 5 minutes.
  </Card>

  <Card title="API Reference" icon="book-open" href="/api-reference/index">
    Browse all 5 gRPC services, request/response types, and code examples.
  </Card>
</Columns>

## Services

<Columns cols={2}>
  <Card title="Account Service" icon="wallet" href="/api-reference/account/overview">
    Look up accounts, generate key pairs, fund accounts on devnet, and query token balances.
  </Card>

  <Card title="Transaction Service" icon="arrows-rotate" href="/api-reference/transaction/overview">
    Compile, sign, simulate, and submit transactions through the full lifecycle: DRAFT → COMPILED → SIGNED → SUBMITTED.
  </Card>

  <Card title="System Program Service" icon="gear" href="/api-reference/system-program/overview">
    Build Solana system program instructions — create accounts, transfer SOL, manage nonces.
  </Card>

  <Card title="Token Program Service" icon="coins" href="/api-reference/token-program/overview">
    Create and manage SPL Token and Token-2022 mints, holding accounts, and token operations.
  </Card>

  <Card title="RPC Client Service" icon="server" href="/api-reference/rpc-client/overview">
    Direct Solana RPC utilities — query rent exemption minimums and network state.
  </Card>
</Columns>