# Evenbead > Evenbead is an agent-native double-entry ledger for small businesses and their accountants. REST API and MCP server at https://api.evenbead.com: integer cents, an Idempotency-Key on every write, dry_run previews, and proposals for agent writes above policy; every change is in a hash-chained audit log. ## Guides - [Overview](https://docs.evenbead.com/index.md): Evenbead's REST API and MCP server: a governed double-entry ledger for a company's own agents and its accountants. - [Quickstart](https://docs.evenbead.com/quickstart.md): Keys, scopes, idempotency, dry runs, proposals, rate limits and key rotation, with curl examples. - [Authentication and firms](https://docs.evenbead.com/authentication.md): API keys, sessions, agent identity, and accounting firms acting in client books with X-Evenbead-Company. - [MCP setup](https://docs.evenbead.com/mcp.md): Connect Claude Code, Claude Desktop and other MCP clients to Evenbead's remote MCP server. - [Email](https://docs.evenbead.com/email.md): Emailing invoices, estimates and receipts through the API, and payment reminders. ## Migration - [From QuickBooks Desktop](https://docs.evenbead.com/migrate-desktop.md): Migrate a QuickBooks Desktop company file over QuickBooks Web Connector, tied out to the cent. - [From QuickBooks Online](https://docs.evenbead.com/migrate-qbo.md): How QuickBooks Online migration works and when it opens on the hosted service. ## Reference - [OpenAPI 3.1 document](https://docs.evenbead.com/openapi.json): every operation with request and response schemas (214 operations) - [API reference](https://docs.evenbead.com/reference/index.html): the same, by area - [MCP tools](https://docs.evenbead.com/mcp-tools.html): 194 tools, each mapped to one operation ## Optional - [Everything in one file](https://docs.evenbead.com/llms-full.txt): all guides plus a compact list of operations and tools