# Invx docs

Invx is invoicing for independent contractors and small studios who bill clients abroad. It is also an [MCP server](/docs/mcp): your AI agent can create, find and repeat invoices for you.

## Start in three steps

1. [Create an account](/sign-up). Afterwards, sign in with your password, an email link or a code.
2. Add your business details: company name, address, currency and payment instructions. They print on every invoice.
3. Add a client and issue your first invoice, or let your agent do it.

## Connect your agent

Invx speaks the Model Context Protocol. Point any MCP client at the server URL:

```text
https://invx.app/api/mcp
```

- [Connect an agent](/docs/mcp): Claude Code, Codex, Cursor, Claude Desktop and apps with custom connectors.
- [Tool reference](/docs/mcp/tools): the 21 tools your agent gets.
- [API keys](/docs/mcp/api-keys): scoped, expiring, revocable.
- [Limits and safety](/docs/mcp/limits): rate limits, errors and how your data is protected.

## For agents and LLMs

Every page here is also plain Markdown: add `.md` to the URL, for example [/docs/mcp.md](/docs/mcp.md). The whole site is indexed at [/llms.txt](/llms.txt), and [/llms-full.txt](/llms-full.txt) holds every page in one file.