Billit API

Name: Billit API API
Brand: Billit API
Availability: InStock

✓ Official Vendor SpecFinanceAccountingbearer23 EndpointsREST

For Agents

Send Belgian e-invoices over Peppol, manage documents and cashbook entries, and import financial transactions through the Billit invoicing platform.

Quickstart

Get started with Billit API in minutes using your preferred integration method.

# Add to your MCP client config (Claude Desktop, Cursor, Windsurf)
{
  "jentic": {
    "url": "https://api.jentic.com/mcp",
    "auth": "oauth"
  }
}

# Then ask your agent:
"send a Peppol e-invoice in Belgium"

# → Jentic returns the GET /events tool with parameter schema, agent executes.

Capabilities

What an agent can do with Billit API API.

Save and retrieve invoices, credit notes, and other documents stored in Billit

Initialise, append entries to, and close a cashbook for daily takings tracking

Import batches of financial transactions for reconciliation against documents

GET STARTED

Start building with Billit API API

Explore with Jentic

View OpenAPI Document

The Billit API exposes the Belgian invoicing platform that lets businesses manage documents, customers, cashbooks, general ledger accounts, financial transactions, and e-invoice registrations. It is the entry point for the Peppol-based e-invoicing flows that became mandatory for B2B invoicing in Belgium, with endpoints to register entities, send e-documents, and manage webhooks for incoming e-invoices. 23 REST endpoints cover account onboarding, document storage, cashbook entries, and bulk financial transaction imports. Authentication is by bearer token issued from the Billit dashboard.

Use Cases

Patterns agents use Billit API API for, with concrete tasks.

★ Belgian Peppol E-Invoicing

Belgium has phased in mandatory B2B e-invoicing over the Peppol network. The Billit API exposes /v1/einvoices/registrations to onboard sending entities and POST /v1/einvoices/registrations/{registrationID}/commands/send to dispatch e-documents, which removes the need for direct Peppol access point integration. A typical integration is two to four days, including webhook handling for inbound documents.

Register company VAT BE0123456789 on Peppol via POST /v1/einvoices/registrations, then send an e-invoice for 1500 EUR to a customer via the registration's send command.

Cashbook Management for Cash-Heavy Businesses

Belgian retailers and hospitality operators are required to maintain a cashbook of daily takings. The Billit API initialises a cashbook with POST /v1/Cashbook/Initialize, appends entries via POST /v1/Cashbook/AddEntry, and closes it permanently when an audit period ends. Setup is typically half a day for a single till.

Initialise a cashbook for the current company, then post each of today's three cash sales as separate entries via /v1/Cashbook/AddEntry.

Bank Transaction Import and Reconciliation

Finance teams want bank statements to flow into their invoicing tool so receivables can be auto-matched to documents. The Billit API accepts batches of transactions via POST /v1/financialTransactions/commands/import and exposes /v1/financialTransactions for retrieval, which lets a nightly job reconcile a full statement run in a single call. Integration is usually one day for a single bank feed.

Import yesterday's CODA transaction list into Billit via /v1/financialTransactions/commands/import and confirm the count returned matches the source file.

AI Agent E-Invoicing Assistant via Jentic

An AI assistant for Belgian SMEs can send e-invoices, look up cashbook entries, and reconcile bank feeds via natural-language requests routed through Jentic. The bearer token is held in the Jentic vault, so the agent never sees the secret. Search-load-execute through Jentic gets the integration live in under an hour.

Search Jentic for 'send a Peppol e-invoice', load the send-command schema, and execute it with the customer's registration ID and a 250 EUR invoice payload.

Key Endpoints

23 endpoints — the billit api exposes the belgian invoicing platform that lets businesses manage documents, customers, cashbooks, general ledger accounts, financial transactions, and e-invoice registrations.

METHOD

PATH

DESCRIPTION

POST

/v1/documents

Save a new document

GET

/v1/documents

List documents

POST

/v1/einvoices/registrations

POST

/v1/einvoices/registrations/{registrationID}/commands/send

Send a Peppol e-document

POST

/v1/Cashbook/AddEntry

Add an entry to the active cashbook

POST

/v1/financialTransactions/commands/import

Import a batch of financial transactions

POST

/v1/account/registercompany

POST

/v1/einvoices/registrations/{registrationID}/webhooks

Subscribe to inbound e-invoice webhooks

POST

/v1/documents

Save a new document

GET

/v1/documents

List documents

POST

/v1/einvoices/registrations

POST

/v1/einvoices/registrations/{registrationID}/commands/send

Send a Peppol e-document

POST

/v1/Cashbook/AddEntry

Add an entry to the active cashbook

Why though Jentic?

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

Credential isolation

Billit bearer tokens are stored encrypted in the Jentic vault (MAXsystem). Agents receive scoped access tokens — the raw bearer credential never enters the agent's context or logs.

Intent-based discovery

Agents search by intent (e.g., 'send a Peppol e-invoice') and Jentic returns the matching Billit operation with its input schema, so the agent can call the right endpoint without browsing Billit's docs.

Time to first call

Direct Billit integration: 2-4 days for Peppol registration, document sending, and webhook handling. Through Jentic: under 1 hour — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Alternative

Billit (Netherlands)

The Dutch counterpart Billit platform with similar invoicing scope

Choose billit.io for Dutch-market invoicing; use billit.be for Belgian Peppol e-invoicing and cashbook compliance.

Alternative

Billingo

Hungarian invoicing platform with Online Számla reporting

Choose Billingo for Hungarian invoicing; choose Billit when the entity needs Belgian Peppol e-invoicing.

Complementary

Stripe

Card and bank-payment processor that pairs with Billit invoicing

Use Stripe to collect the payment, then call Billit to issue and dispatch the corresponding Peppol e-invoice.

Alternative

Xero Accounting

International cloud accounting platform with invoicing

Choose Xero for multi-country accounting; choose Billit when the entity is Belgian and needs Peppol-native e-invoicing.

FAQs

Specific to using Billit API API through Jentic.

What authentication does the Billit API use?

The Billit API uses HTTP bearer token authentication. You generate the token in the Billit dashboard and supply it as Authorization: Bearer <token>. When called via Jentic, the token is held in the MAXsystem vault so the raw bearer credential never reaches the agent's context.

Can I send Peppol e-invoices through the Billit API?

Yes. Register the sending entity via POST /v1/einvoices/registrations, then dispatch e-documents via POST /v1/einvoices/registrations/{registrationID}/commands/send. Billit acts as the Peppol access point, so the integration does not need to handle Peppol routing directly.

What are the rate limits for the Billit API?

The OpenAPI spec does not declare explicit numeric rate limits. Billit's published practice is to throttle abusive traffic and return 429 responses when limits are exceeded. The Jentic SDK retries on 429 with back-off, so high-volume reconciliation jobs do not have to implement this manually.

How do I import a batch of bank transactions into Billit through Jentic?

Search Jentic for 'import bank transactions to Billit', which surfaces POST /v1/financialTransactions/commands/import. Load the schema, supply the transaction list, and execute. The Python flow is: pip install jentic, then await client.search, await client.load, await client.execute.

Can I subscribe to inbound e-invoice notifications?

Yes. POST /v1/einvoices/registrations/{registrationID}/webhooks creates a webhook for a specific Peppol registration, and GET on the same path lists existing webhooks. This is the supported mechanism for receiving real-time inbound e-invoice events.

Does the Billit API expose cashbook operations?

Yes. /v1/Cashbook covers the full lifecycle: initialise, append entries, list entries, and permanently close. This is the same data Belgian businesses are required to keep for daily cash takings, exposed for direct automation.