FreshBooks and Asana integration

What moves between them

Work flows from Asana into FreshBooks, and billing context flows back. An Asana project becomes a FreshBooks client and project, and task completion, assignees, and due dates update the matching FreshBooks project so the billable side reflects real progress. Asana custom fields holding cost codes or amounts feed draft FreshBooks invoices and expenses against the correct client. In the other direction, FreshBooks invoice and payment status can update a custom field on the linked Asana task so the delivery team sees when a milestone has been billed or paid. Asana user records align with FreshBooks staff and clients so assignments map to known people, and the sync runs on the schedule you set with webhook triggers where they fire reliably.

How ml-connector handles it

ml-connector stores both credential sets encrypted, holds the FreshBooks OAuth access and refresh tokens, and refreshes them when a call returns 401, accepting that each FreshBooks refresh issues a new refresh token and invalidates the previous one. It resolves the FreshBooks account ID and business ID once from users/me, since accounting and time-tracking endpoints need different identifiers. On the Asana side it uses a Personal Access Token or OAuth token and always passes opt_fields, because Asana returns only gid, name, and resource_type by default and otherwise looks empty. Asana custom fields are matched by GID rather than name, so a renamed field still maps to the right FreshBooks line item. Because FreshBooks webhook latency is not guaranteed and Asana webhooks self-delete after 24 hours of failures, ml-connector treats both pushes as triggers and backstops them with a scheduled poll, re-registering Asana webhooks when they disappear. FreshBooks invoices are created as Draft and only appear in accounting reports once marked Sent, so ml-connector advances status explicitly, and it supplies its own invoice_number to avoid the 409 conflicts FreshBooks can return on concurrent creates. Both sides return HTTP 429 under throttling, so ml-connector backs off and retries, and every record carries a full audit trail and can be replayed if a downstream call fails.

A real-world example

A 25-person digital agency delivers client projects in Asana but bills through FreshBooks. Before the integration, a project manager set up each engagement twice, once as an Asana project for the team and again as a FreshBooks client and project for billing, then copied tracked hours and milestone amounts into invoices by hand at the end of each month. Tasks marked done in Asana did not show up on the billing side, so invoices were late and sometimes missed work. With FreshBooks and Asana connected, a new Asana project creates the FreshBooks client and project automatically, completed tasks and custom-field amounts feed draft invoices, and the billed or paid status appears back on the Asana task. The duplicate setup and the manual hours transfer are gone, and billing keeps pace with delivery.

What you can do

• •Create a FreshBooks client and project from an Asana project so billing setup is not done twice.
• •Feed completed Asana tasks and custom-field amounts into draft FreshBooks invoices and expenses against the right client.
• •Write FreshBooks invoice and payment status back to a custom field on the linked Asana task.
• •Map Asana custom fields by GID to FreshBooks line items and align Asana users with FreshBooks staff and clients.
• •Bridge Asana token auth and FreshBooks OAuth, with polling, webhook triggers, retries, and a full audit trail.

Questions

Can Asana send invoices or payments into FreshBooks?

Not directly, because Asana has no native invoice or payment objects. Instead, ml-connector reads the financial values teams keep in Asana custom fields, such as cost codes or billable amounts, and uses them with the linked project to draft FreshBooks invoices and expenses. The actual invoice and payment records live in FreshBooks, where that data belongs.

How are the two systems kept in sync given FreshBooks webhook latency?

FreshBooks states that webhook delivery is not guaranteed and can take several minutes, and Asana webhooks self-delete after 24 hours of failed delivery. ml-connector treats both webhooks as triggers but backstops them with a scheduled poll, so a missed or delayed event is still picked up. It also re-registers Asana webhooks when they disappear.

What credentials does this integration need?

FreshBooks uses OAuth 2.0 authorization-code, so you supply a client ID, client secret, and redirect URI, and ml-connector manages the access and refresh tokens and resolves your account and business IDs. Asana uses a long-lived Personal Access Token or an OAuth client plus a workspace ID. Both credential sets are stored encrypted and never logged.