How do I integrate Pennylane API with my application?

Apideck provides a unified Accounting API that makes Pennylane integration simple. Sign up for free, enable Pennylane in your dashboard, and use our Vault component to let your users connect their Pennylane accounts. We handle OAuth authentication, token refresh, and data normalization automatically.

What Pennylane data can I access through Apideck?

Our Pennylane integration supports 15+ data models including customers, suppliers, customer invoices, and supplier invoices. You can perform read and write operations through our unified API, working with the same code structure across all accounting platforms.

How does Pennylane authentication work with Apideck?

Apideck's Vault handles Pennylane authentication completely. Your users connect their Pennylane accounts through our secure, white-label UI. We manage OAuth tokens, automatic refresh, and credential storage, so you never have to implement Pennylane's auth flow yourself.

Does Apideck support Pennylane webhooks?

Yes, Apideck provides real-time notifications when Pennylane data changes. Our unified webhook system normalizes events across all integrations, so you handle Pennylane events with the same code you use for other accounting platforms.

Why use Apideck instead of Pennylane's direct API?

Using Apideck's unified API instead of Pennylane's direct API saves significant development time. You get normalized data models, automatic auth handling, and the same integration code works with 200+ other apps. When Pennylane updates their API, we handle the changes so your integration keeps working.

How quickly can I build a Pennylane integration?

Most developers ship a working Pennylane integration within a day using Apideck. Sign up for a free trial (no credit card required), enable Pennylane, and make your first API call within minutes. Our SDKs for Node.js, Python, and other languages make implementation straightforward.

Apideck CLI: Query 200+ SaaS APIs from your terminal. No SDK needed. Read more →

Pennylane API integration

Build Pennylane integrations in minutes, not months. One API to sync permissioned accounting data with Pennylane and 38+ other apps.

Get started for free Explore Pennylane docs

15+ data models

SOC 2 certified

Free trial

Real-time webhooks

Requested Data Access

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display_name

ReadWrite

company_name

ReadWrite

Read

Your customers authorize exactly which data your app can access.

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Integration Guide

How to integrate Pennylane API in 3 steps

Build a production-ready Pennylane Accounting API integration in minutes, not months. No OAuth headaches, no maintenance burden.

Step 01

Create your Apideck account

Sign up for free and enable Pennylane in your Apideck dashboard. Configure which accounting data your app needs access to.

Start your free trial
Full API access
No credit card required

Step 02

Connect Pennylane via Vault

Use our pre-built Vault component to let your users securely connect their Pennylane account. We handle OAuth, token refresh, and credential storage.

White-label auth UI
Automatic token refresh
SOC 2 certified

Step 03

Start syncing accounting data

Make API calls to read and write accounting data from Pennylane. Use the same code to connect 200+ other apps.

Normalized data models
Real-time webhooks
Full CRUD support

Start Pennylane integration

Free trial • No credit card required • Setup in under 5 minutes

Code Example

Pennylane API integration code

Integrate Pennylane with just a few lines of code. Our unified Accounting API normalizes data across 200+ integrations, so you write once and connect everywhere.

Normalized responses — same data structure for all accounting apps
Official SDKs — Node.js, Python, and more with TypeScript support
Full documentation — interactive API reference with Pennylane-specific examples

View Pennylane API documentation →

import { Apideck } from '@apideck/node'

const apideck = new Apideck({
  apiKey: process.env.APIDECK_API_KEY,
  appId: process.env.APIDECK_APP_ID,
  consumerId: 'user-123'
})

// List invoices from Pennylane
const { data } = await apideck.accounting.invoicesAll({
  serviceId: 'pennylane'
})

console.log(`Found ${data.length} invoices`)

Explore all SDKs ↓

Why integrate Pennylane with Apideck?

Build a production-ready Pennylane integration with enterprise-grade reliability

Ship Pennylane integration fast

Go live with Pennylane in days, not months. Our unified Accounting API handles authentication, data normalization, and error handling so your team can focus on building features.

15+ Pennylane data models

Access 15+ data models for Pennylane including customers, invoices and bills. Read and write data through a single standardized API.

Real-time webhook coverage

Keep your product synchronized with Pennylane using webhooks. Receive push updates for invoices, customers, payments, and more without polling.

Get started for free

API Resources

Push and pull Pennylane data

Use our Unify API to get real-time data from Pennylane

Ledger Accounts

Accounting API

Tax Rates

Accounting API

Me

Accounting API

Customer Invoices

Accounting API

Customers

Accounting API

Supplier Invoices

Accounting API

Suppliers

Accounting API

Products

Accounting API

Ledger Entries

Accounting API

Purchase Requests

Accounting API

File Attachments

Accounting API

Transactions

Accounting API

Quotes

Accounting API

Bank Accounts

Accounting API

View API Reference

Technical Specifications

Pennylane API integration details

Everything you need to know about integrating Pennylane through our unified Accounting API.

Authentication

OAuth 2.0

Secure token-based authentication

Data Models

15+ resources

Access 15+ normalized data models

Webhooks

Virtual webhooks

Real-time data sync on changes

Security

SOC 2 Type II

Enterprise-grade security certified

Token Management

Automatic refresh

Never worry about expired tokens

API Format

REST + JSON

Standard REST API with JSON responses

Pennylane direct API vs Apideck unified API

Feature	Direct Pennylane API	Apideck Unified API
OAuth implementation	Build from scratch	Handled by Vault
Token refresh	Manual handling	Automatic
Data normalization	Pennylane format only	Normalized across 200+ apps
Error handling	Platform-specific	Unified error codes
Rate limit management	DIY implementation	Built-in throttling
Maintenance	Ongoing updates required	We handle API changes
Additional integrations	Separate work each	Same code, 200+ apps

View complete Pennylane API reference →

Use Cases

What integrations can you build with Pennylane?

Power these accounting workflows with Pennylane data through our unified API.

Payroll Accounting

Streamline payroll data flow between HR systems and accounting platforms seamlessly.

Learn more

Procurement

Automate purchase orders, vendor management, and spend tracking across ERP and accounting systems.

Learn more

Tax Automation

Connect to accounting data to accurately calculate, file, and reconcile sales tax.

Learn more

View all use cases

Pennylane Integration FAQ

Common questions about integrating Pennylane with your application

Learn more about Pennylane

Discover insights, developer guides, and best practices for working with Pennylane integrations.

How to Integrate With the Pennylane API

A developer's guide to integrating with the Pennylane accounting API, covering authentication, invoicing workflows, rate limits, v1 to v2 migration, and practical tips for building production-ready integrations with the French accounting platform.

Mar 13, 2026

Setup GuideOAuth Guide

Pennylane OAuth Credentials Guide

Step-by-step guide to set up oauth credentials for your Pennylane integration.

Apideck Docs

Developer Guide

View all articles View developer guides

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