Billr is open-source invoicing with a built-in MCP server. Connect Claude Code, Codex, Cursor or any MCP client over OAuth and your agent can log time, track expenses, draft estimates and send invoices through 53 tools, with bookkeeper-level permissions. Every agent action is badged in one dashboard. Self-host free under Apache-2.0, or use the hosted version at billr.cc. Built with TypeScript/Next.js on Supabase.
Commercial Use
Modify
Distribute
Place Warranty
Sub-License
Private Use
Use Patent Claims
Hold Liable
Use Trademarks
Include Copyright
State Changes
Include License
Include Notice
These details are provided for information only. No information here is legal advice and should not be used as such.