Alegra API

Name: Alegra API
Brand: Alegra API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentFinanceAccountingbasic33 EndpointsREST

For Agents

Create and manage invoices, items, contacts, estimates, and payments inside an Alegra accounting account through 33 REST endpoints.

Install Jentic One Beta

Connect the Alegra API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Alegra API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Alegra API.

Create, list, update, and delete Alegra invoices and email them to a customer with /invoices/{id}/email

Manage the product and service items used as invoice line items

Maintain customer and supplier contact records via /contacts

GET STARTED

Start building with Alegra API

Explore with Jentic

View OpenAPI Document

Use Cases

Patterns agents use Alegra API for, with concrete tasks.

★ Automated invoicing from a billing system

A SaaS billing system creates an invoice in Alegra each time a subscription renews by calling POST /invoices with the customer contact id, line items, and dates. The same workflow then calls POST /invoices/{id}/email to deliver the invoice straight to the customer. Bookkeeping stays in Alegra while the system of record stays in the SaaS app.

POST /invoices with the contact id and items array, then POST /invoices/{id}/email with the recipient address

Two-way contact sync between a CRM and Alegra

An ops engineer mirrors customers from a CRM into Alegra by listing /contacts, comparing against CRM records by email, and creating or updating contacts as needed. Keeping contact metadata aligned lets the accounting team produce invoices without re-entering names and tax IDs.

GET /contacts to list existing entries, then POST /contacts for missing CRM customers and PUT /contacts/{id} for changed records

Payment reconciliation and credit notes

An AR clerk reconciles incoming bank transfers against Alegra invoices by listing /payments and matching amounts to invoice ids. When a refund is required, the clerk issues a credit note via the credit notes resource, keeping the ledger consistent without manual journal entries.

GET /payments for the period, match each row to an invoice by amount and contact, and POST a credit note for any refunds

Agent-driven invoice lookup and dispatch

A Jentic agent answers requests like 'send the latest invoice to client X' by listing the contact, finding the most recent invoice, and emailing it via POST /invoices/{id}/email. The agent never sees the basic auth credentials and never has to compose Spanish-language email templates manually.

Search Jentic for 'create and email an Alegra invoice', execute POST /invoices for the contact, then chain POST /invoices/{id}/email with the recipient

Key Endpoints

33 endpoints — jentic publishes the only available openapi specification for alegra api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/invoices

Create an invoice

GET

/invoices/{id}

Retrieve an invoice

POST

/invoices/{id}/email

Email an invoice to a contact

POST

/contacts

Create a contact

POST

/items

Create a product or service item

POST

/payments

Record a payment

POST

/estimates

Create an estimate

POST

/invoices

Create an invoice

GET

/invoices/{id}

Retrieve an invoice

POST

/invoices/{id}/email

Email an invoice to a contact

POST

/contacts

Create a contact

POST

/items

Create a product or service item

POST

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Alegra basic auth credentials (account email plus API token) are stored encrypted in the Jentic credential vault. Jentic builds the Authorization header at execution time, so the raw token never appears in the agent's prompt.

Intent-based discovery

Agents search Jentic by intent (e.g. 'create an alegra invoice', 'record a payment'), and Jentic returns the matching Alegra operation with its input schema for direct execution.

Time to first call

Direct Alegra integration: 2-3 days for auth, invoice payload modelling, and reconciliation logic. Through Jentic: under an hour with search, load, and execute.

FAQs

Specific to using Alegra API through Jentic.

Why is there no official OpenAPI spec for Alegra API?

Alegra does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Alegra API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the Alegra API use?

Alegra uses HTTP basic auth, where the username is the account email and the password is the API token from the Alegra account settings. Jentic stores both encrypted and injects the Authorization header at execution time so the credentials never enter the agent's prompt context.

Can I create and email an invoice with the Alegra API?

Yes. POST /invoices with the contact id, items, and dates to create the invoice, then POST /invoices/{id}/email with the recipient address to send it. The same id can be retrieved later with GET /invoices/{id} for audits.

What are the rate limits for the Alegra API?

The OpenAPI spec does not declare rate limits. Alegra enforces plan-based limits server-side (commonly a few requests per second per token), so batch high-volume invoice or contact sync jobs accordingly.

How do I record a payment against an invoice through Jentic?

Search Jentic for 'record an alegra payment', load the schema for POST /payments, and execute it with the invoice id, amount, and bank account id. Jentic returns the payment record so an agent can confirm reconciliation.

Can I issue a credit note for a refund using the Alegra API?

Yes. The credit notes resource lets you issue a credit against an existing invoice. The credit note keeps the ledger consistent without manual journal entries and is visible in the same Alegra account as the original invoice.

Alegra API

Connect the Alegra API to your agent

Capabilities

Start building with Alegra API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs