Developer Documentation

API Changelog

FundraiserMax API changelog: dated entries for new endpoints, changed fields, and deprecations.

Changelog

A record of all notable changes, additions, and fixes to the FundraiserMax API.

2026-10-11v1.1.0Contacts carry customFields, the account's custom field values keyed by field name: returned by get, create, and update, accepted on create and update, and included in contact.created and contact.updated webhooks and the MCP contact tools. Donations accept electionType and electionYear. Donations posted with a donationAccountId are checked against that account's contribution limit, and one that goes over is flagged in the app for review. It's never rejected.

2026-02-16v1.0.0Initial release of the FundraiserMax External API. Includes Contacts, Campaigns, Events, Donations, and Dashboard endpoints. Webhook support with signature verification. MCP server integration for AI assistants.