Integration · ERP

attendo + Holded

For companies that invoice with Holded and run their day-to-day work in attendo. Contacts, catalog, documents, payments, projects, hours and calendar travel area by area, with nothing typed twice.

Status Available

Request a demo See what travels

Through the Holded API, nothing to install
A tag decides what travels
Holded issues and numbers

attendo Holded

between attendo and Holded, both ways Contacts, leads and products Each record is born where it belongs
from attendo to Holded Quotes, orders and delivery notes What is prepared in attendo goes to Holded
from Holded to attendo Payments, inventory and invoice number The official data comes back to attendo

What it solves

A tax ID copied wrong, an invoice that does not match the report

A company that invoices with Holded and operates with attendo ends up copying customers, products and quotes by hand. Every copy is a chance for a mistake: a wrong tax ID, an outdated price or an invoice that does not match the service report.

With the connector, each record is born where it belongs and reaches the other side on its own. You choose the direction for each area. Holded still issues the invoice; attendo prepares the draft and shows the official number.

What it does

What it does, piece by piece

Fifteen areas that you turn on separately, each with its direction, the system that wins and what happens if something is deleted.

Contacts, leads and pipeline

Customers and vendors both ways, the leads from the Holded CRM and the stages of its pipeline.

Products, warehouses and inventory

Products and warehouses both ways. Inventory comes from Holded while the area is turned on.

Sales and purchase documents

Quotes, proformas, orders, invoices, credit notes and purchases, with their lines. Delivery notes travel if you map their type.

Official number and payments

When Holded issues the invoice, its number, series and date come back to attendo. So do the amounts paid and outstanding.

Projects, tasks and hours

Projects, tasks and logged hours, with each person matched to their Holded employee. And calendar appointments.

A tag decides what travels

With the filter on, only contacts and products tagged attendo in Holded travel. Removing the tag stops syncing without deleting anything.

What travels

What travels, and in which direction

Changes in attendo go out within seconds. Changes in Holded arrive instantly if your plan includes webhooks and, if not, in a check every 5 minutes.

What travels between attendo and Holded, in which direction and when
Data	Direction	When
Customers, vendors and leads	Directionbetween attendo and Holded, both ways	WhenWithin seconds or in the periodic check
Products and warehouses	Directionbetween attendo and Holded, both ways	WhenWithin seconds or in the periodic check
Inventory	Directionfrom Holded to attendo	WhenWhile the area is turned on
Sales and purchase documents	Directionbetween attendo and Holded, both ways	WhenWithin seconds, or when you click “Send to Holded”
Invoice number, series and date	Directionfrom Holded to attendo	WhenWhen Holded issues it
Payments	Directionfrom Holded to attendo	WhenWithin seconds or in the periodic check
Projects, tasks, hours and appointments	Directionbetween attendo and Holded, both ways	WhenWithin seconds or in the periodic check

Getting started

How to get started

The connector uses the Holded API. We get it live with you, using your account, area by area, reviewing the initial load.

Status Available

What you need

A Holded account with API access and its API key
To receive changes instantly, a Holded plan with webhooks; otherwise they arrive through the periodic check
For projects and team, those apps turned on in your Holded account

Typical effort. The technical part takes hours. What takes time is choosing which system wins in each area, cleaning up duplicates and reviewing the log during the first week.

Step 1
API key

You generate it in Holded and paste it into attendo. Testing the connection shows which parts of Holded it can reach.
Step 2
Holded notifications

attendo registers the notifications in Holded from its own screen. If your plan does not support them, everything works through the periodic check.
Step 3
Initial load

Before opening an area with data on both sides, records are matched and doubtful ones are resolved by hand.
Step 4
Areas in order

Customers and vendors; products and warehouses; documents and payments; then the rest.

Honesty

What it does not do

Accounting and payroll
No journal entries, remittances, bank reconciliation or payroll: they stay in Holded.
Holded POS, OCR and price lists
The POS, the document inbox with OCR, and price lists or customer-specific prices stay in Holded.
Attachments and templates
It does not send files to Holded, and the PDF uses the default Holded template.
Several accounts
Each attendo instance connects to one Holded account.

Keep going

What goes with it

All integrations Every connection, with its real status.

Frequently asked questions

Do I need to install anything in Holded?

No. Everything goes through the Holded API, and notifications are registered from attendo.

What if my Holded plan does not include webhooks?

It works the same through the periodic check: changes in Holded take minutes instead of seconds.

Who issues the invoice?

Holded, with its number, series and date. attendo is not an ERP or accounting software: it prepares the draft, copies the official data and locks the document.

Will customers be duplicated if I already have data on both sides?

No, if you run the initial load before opening the area. It matches by tax ID, email or code, and doubtful cases are never linked on their own.

Can I pause it on a closing day?

Yes. While paused, attendo stops sending and reading, and when you resume it processes everything that piled up.

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