Monto API

Name: Monto API
Brand: Monto API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentFinanceAccountingapiKey37 EndpointsREST

For Agents

Read normalised accounting data — companies, accounts, journals, customer invoices, and financial statements — across ERPs through Monto's unified API.

Install Jentic One Beta

Connect the Monto API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Monto 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 Monto API.

Connect a company to QuickBooks, Xero, or another supported ERP via /integrations and /subscriptions

List the chart of accounts and account transactions across every connected accounting system in one schema

Pull standardised balance sheets and income statements per company without integration-specific quirks

GET STARTED

Start building with Monto API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI specification for Monto API, keeping it validated and agent-ready. Monto provides a unified accounting API across underlying ERP and accounting integrations such as QuickBooks, Xero, and others, exposing companies, accounts, journals, customer invoices, balance sheets, income statements, and account transactions through a single surface. The 37-endpoint API also includes data quality signals (consistency, liquidity), metrics, and a connection lifecycle for adding new integrations to a company. Authentication is an API key in the Authorization header.

Use Cases

Patterns agents use Monto API for, with concrete tasks.

★ Lender Underwriting from Live Books

A lender uses Monto to pull a borrower's accounts, journals, customer invoices, balance sheet, and income statement directly from QuickBooks or Xero through one API. The data is normalised across providers, so the underwriting model does not need ERP-specific adapters and can score the company on liquidity and consistency signals returned by Monto.

Pull the latest balance sheet, income statement, and consistency score for company c_42 and return the current ratio plus the most recent monthly net income.

Accounts Receivable Automation

Finance ops uses Monto's customer invoice and customer invoice payment endpoints to build dashboards and dunning workflows that span every entity in the group. Because the data is unified, the same logic works whether a subsidiary uses QuickBooks Online or Xero, removing the need for parallel codepaths per ERP.

List customer invoices over 30 days past due across every Monto company and group totals by customer.

Embedded Bookkeeping Insights

A SaaS app that serves SMBs embeds Monto to read each customer's accounting data and surface insights — runway, customer concentration, expense growth — without forcing the SMB to export CSVs. The /companies, /metrics, and /balance-sheet endpoints provide enough surface for a useful insights screen built on top of normalised numbers.

For company c_77 compute monthly burn over the last six months and project the runway given current cash on the latest balance sheet.

AI Agent Financial Analysis

An analyst agent uses Jentic to discover Monto's accounting endpoints and run multi-company queries with vault-stored API keys. Because Monto does not publish a public OpenAPI spec, Jentic's spec is the only structured way for an agent to call the unified accounting API without scraping the developer portal.

Search Jentic for 'pull a company's income statement', load the Monto income statement schema, and execute it for company c_42 over the trailing twelve months.

Key Endpoints

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

METHOD

PATH

DESCRIPTION

GET

/integrations

List supported ERP integrations

GET

/companies

List companies in the subscription

POST

/companies

Create a company

GET

/companies/{company-uuid}/customer-invoices

List customer invoices for a company

GET

/subscriptions

List Monto subscriptions

POST

/subscriptions

Create a subscription

DELETE

/companies/{company-uuid}

Delete a company

GET

/integrations

List supported ERP integrations

GET

/companies

List companies in the subscription

POST

/companies

Create a company

GET

/companies/{company-uuid}/customer-invoices

List customer invoices for a company

GET

/subscriptions

List Monto subscriptions

Why Jentic?

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

Credential isolation

Monto API keys are stored encrypted in the Jentic vault. The Authorization header is set at execution time so secrets stay out of the agent context, and per-tenant keys can be managed centrally for multi-customer deployments.

Intent-based discovery

Agents search Jentic by intent (e.g. 'pull a company's balance sheet') and receive the matching Monto endpoint with its full input schema, including the company UUID parameter.

Time to first call

Direct Monto integration: 1-2 days for auth, pagination, and learning the unified schema. Through Jentic: under 1 hour from API key in the vault to first call.

FAQs

Specific to using Monto API through Jentic.

Why is there no official OpenAPI spec for Monto API?

Monto does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Monto 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 Monto API use?

Monto uses an API key in the Authorization header. Through Jentic the key is stored in the credential vault and applied to each request at execution time so it never enters the agent's context.

Which accounting systems does Monto unify?

Monto exposes a unified schema across underlying integrations such as QuickBooks Online and Xero through GET /integrations and the /companies/{company-uuid}/customer-invoices and account endpoints. The same field names and shapes apply regardless of the underlying ERP.

Can I pull a balance sheet through Monto?

Yes. The /balance-sheet endpoint returns a standardised balance sheet per company. The /income-statement endpoint provides the corresponding profit and loss view, and /metrics aggregates higher-level numbers across companies.

What are the rate limits for the Monto API?

The spec does not declare explicit rate limits. Treat HTTP 429 as a back-off signal and retry with exponential delay; long reports such as a 24-month income statement should be cached client-side.

How do I list every customer invoice for a company through Jentic?

Search Jentic for 'list customer invoices', load the schema for GET /companies/{company-uuid}/customer-invoices, and execute it with the company's UUID. Jentic handles the Authorization header so only the company UUID is needed.

Monto API

Connect the Monto API to your agent

Capabilities

Start building with Monto API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs