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FreshBooks alternatives for AI agents
2 alternatives to FreshBooks. 2 have an interface an agent can drive. 1 is open source. 2 reach every recorded job.
| Listing | License | Agent interface | Reach | Effort | Last activity |
|---|---|---|---|---|---|
| Inkvoice | MIT | API, from the builder | 10 of 10 jobs | Config only | Sep 2, 2026 |
| Invoice Ninja | Elastic-2.0 | API, from the builder | 10 of 10 jobs | Config only | Sep 3, 2026 |
Inkvoice
One-container invoicing for freelancers: Stripe and PayPal, expenses, German e-invoicing, REST API.
Self-hosted · Inkvoice Cloud
- I am a freelancer who wants invoices and card payments on a €5 VPS with my data in one SQLite file
- I invoice German businesses and need XRechnung or ZUGFeRD without a per-seat subscription
- COOKIE_SECURE defaults to true, so logins silently fail on plain HTTP unless you set it to false
- Keep the 512 MB memory cap or Bun grows its heap
- API tokens with scopes exist in routes/api-tokens.ts but the docs only describe JWT login
- Real-software signal is thin: 21 stars, 8 forks, issues from four people; kept on the Show HN thread, Dokploy template and hosted Cloud
Invoice Ninja
Self-hostable invoicing, quotes, expenses and time tracking with a complete REST API.
Self-hosted · Hosted Free: Free · Ninja Pro: $14 per month · Enterprise: $18 per month · White-label license (self-hosted): $40 per year
- I bill a handful of clients and want invoices, quotes and card payments on my own server without a per-seat plan
- I want my agent to raise and chase invoices from a project tracker without touching the invoicing UI
- License is Elastic License 2.0, not OSI open source: you may modify and self-host, but may not offer it as a managed service to third parties
- Default PDF_GENERATOR=hosted_ninja sends invoice HTML to Invoice Ninja's PDF service; switch to snappdf for fully local rendering
- APP_KEY encrypts stored data; losing it makes the database unreadable
- Removing Invoice Ninja branding from client-facing pages needs the $40/year white-label license
Questions
Is there an open source alternative to FreshBooks?
Yes. 1 of the 2 listings here is open source: Inkvoice (MIT).
Which FreshBooks alternatives have an MCP server?
None of these has an MCP server from its builder on record. The recorded interface is API.
Which FreshBooks alternative can an agent do the most with?
Inkvoice: 10 of 10 recorded jobs reachable. Invoice Ninja: 10 of 10 recorded jobs reachable. Jobs differ by listing, so read each list before you choose.
Listings come from reading each repo and its docs. Reach counts the jobs an agent can do through the stated interface, and each listing page shows the evidence. Order follows fit. For agents: Markdown · JSON