OCPF Public API Server

This is the API server for the Massachusetts Office of Campaign and Political Finance.

This server provides public, read-only access to Massachusetts campaign finance data including filer profiles, contribution and expenditure records, report filings, and more.

Developer Portal

Learn what the API offers and see code examples.

Get Started

API Reference

Interactive documentation for all public endpoints.

Open Swagger

OCPF Website

Visit the main OCPF site for filings and resources.

ocpf.us

Base URL: https://api.ocpf.us
Authentication: None required — all data is public record.
Format: JSON with camelCase property names.