Developers
Build on the calm Business OS.
The same API that powers SoftBillo is open to you. REST endpoints, signed webhooks, and a first-class MCP server for AI agents.
Personal access tokens
Scoped tokens for your workspace, revocable in one click from Settings → Developer.
REST API
Read and write clients, invoices, estimates, expenses and time entries over a clean JSON API.
Webhooks
Subscribe to invoice.paid, expense.created, project.completed and more. Signed with HMAC SHA-256.
MCP server
Connect Claude, Cursor and other MCP-aware agents to your SoftBillo workspace with OAuth consent.
Quickstart
Send your first invoice from code.
curl https://api.softbillo.com/v1/invoices \
-H "Authorization: Bearer $SOFTBILLO_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"client_id": "cli_123",
"currency": "USD",
"line_items": [
{ "description": "Design sprint", "quantity": 1, "unit_price": 1200 }
]
}'Generate a token from Settings → Developer. All endpoints are workspace-scoped and enforced by row-level security.
Full docs are opening soon.
We're publishing the full reference. In the meantime, request early access or open the MCP integration flow.