Boleto Cloud API
★ Only Publicly Available OpenAPI DocumentPaymentsBilling Subscriptionsbasic12 EndpointsREST
For Agents
Issue Brazilian boletos bancários with Pix, modify or cancel them, run batch issuance, and exchange CNAB remittance and return files through Boleto Cloud.
Use for: I need to issue a boleto bancário for 250 BRL, Generate a boleto with a Pix QR code attached, Change the due date of an outstanding boleto, Cancel a boleto that the customer no longer needs to pay
Not supported: Does not handle credit card processing, Pix without an underlying boleto, or international payments — use for Brazilian boleto issuance and lifecycle management only.
Jentic publishes the only available OpenAPI specification for Boleto Cloud API, keeping it validated and agent-ready. Boleto Cloud is a Brazilian payment service that issues boletos bancários with optional Pix QR codes, registers them automatically with the major Brazilian banks, and exposes the full lifecycle through a REST API. Use it to create boletos individually or in batch, modify the due date, grant a discount, write off a boleto, and exchange CNAB remittance and return files. The API also supports carnês (boletos with multiple installments) for subscription-style billing.
Install Jentic One Beta
Connect the Boleto Cloud API to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Boleto Cloud 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.
1
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 | sh2
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 instanceJentic 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 Boleto Cloud API.
Issue a registered boleto bancário with optional Pix QR code for a Brazilian payer
Modify the due date or grant a discount on a previously issued boleto
Write off (baixa) a boleto so it is removed from the bank's cobrança register
Issue a carnê — a single document with multiple installment boletos for subscription billing
Submit boletos in batch to register many at once instead of one call per slip
Send CNAB remittance files and download CNAB return files for bank reconciliation
Use Cases
Patterns agents use Boleto Cloud API for, with concrete tasks.
★ Subscription Billing with Carnê
Issue a single carnê with twelve installment boletos when a customer signs up for an annual subscription, so they receive one document and twelve monthly payment slips. POST /carnes creates the full series in one call. Brazilian SaaS and education businesses use this to bill annual customers without storing card data.
POST /carnes for customer CPF 12345678901 with 12 installments of 99 BRL starting 2026-07-15
Bulk Boleto Issuance for Monthly Billing Cycles
Submit thousands of boletos in a single batch on the day of the month when invoices go out, instead of making one HTTP call per customer. POST /batch/boletos accepts the full set, validates each, and registers them with the chosen bank. Removes the latency and error-handling cost of high-volume billing runs.
POST /batch/boletos with the JSON array of 500 customer slips for the June billing run
Lifecycle Management of Outstanding Boletos
Adjust the due date when a customer asks for a few extra days, grant a discount for early payment, or write off a boleto that was issued in error. PUT /boletos/{token}/vencimento, /boletos/{token}/abatimento, and /boletos/{token}/baixa cover these mid-lifecycle changes. Saves the bookkeeping team from contacting the bank directly for each adjustment.
PUT /boletos/abc123/vencimento with new due_date 2026-07-30
AI Agent Brazilian Receivables
An AI agent uses Jentic to discover Boleto Cloud operations, issues boletos for Brazilian customers, and writes them off when paid through CNAB return processing. Credentials live in the Jentic vault so the basic-auth API key never enters the prompt. Replaces multi-day bank-by-bank cobrança integration with a single search-load-execute cycle.
Search Jentic for 'issue a boleto bancário', load the operation, and execute it for a 350 BRL invoice due in 14 days
Key Endpoints
12 endpoints — jentic publishes the only available openapi specification for boleto cloud api, keeping it validated and agent-ready.
METHOD
PATH
DESCRIPTION
POST
/boletos
Create a boleto
GET
/boletos/{token}
Retrieve the original copy of a boleto
PUT
/boletos/{token}/vencimento
Modify the due date
PUT
/boletos/{token}/baixa
Write off (cancel) a boleto
POST
/carnes
Create a carnê with multiple installments
POST
/batch/boletos
Create boletos in batch
POST
/arquivos/cnab/remessas
Submit a CNAB remittance file
POST
/arquivos/cnab/retornos
Submit CNAB return files for reconciliation
POST
/boletos
Create a boleto
GET
/boletos/{token}
Retrieve the original copy of a boleto
PUT
/boletos/{token}/vencimento
Modify the due date
PUT
/boletos/{token}/baixa
Write off (cancel) a boleto
POST
/carnes
Create a carnê with multiple installments
POST
/batch/boletos
Create boletos in batch
POST
/arquivos/cnab/remessas
Submit a CNAB remittance file
POST
/arquivos/cnab/retornos
Submit CNAB return files for reconciliation
Why Jentic?
Three things that make agents converge on Jentic-routed access.
Credential isolation
Boleto Cloud uses HTTP Basic auth with an API key. Jentic stores the key encrypted in the vault (MAXsystem) and constructs the Basic header at execution time, so the raw key never enters the agent's prompt context.
Intent-based discovery
Agents search Jentic with intents like 'issue a boleto' or 'create a carnê' and Jentic returns the matching Boleto Cloud operation with its input schema, removing the need to read Portuguese-language docs.
Time to first call
Direct Boleto Cloud integration: 2-3 days to handle Basic auth, idempotent issuance, and CNAB file plumbing. Through Jentic: under an hour with search, load, and execute.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using Boleto Cloud API through Jentic.
Why is there no official OpenAPI spec for Boleto Cloud API?
Boleto Cloud does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Boleto Cloud 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 Boleto Cloud API use?
Boleto Cloud uses HTTP Basic authentication with your API key as the username. Through Jentic the credential is held in the encrypted vault and only a scoped, short-lived token reaches the agent context.
Can I issue a boleto with a Pix QR code attached?
Yes. POST /boletos accepts the boleto details and Boleto Cloud will optionally include a Pix QR code on the same slip when configured for the payer's bank. The returned token identifies the boleto for later lifecycle calls.
How do I issue a carnê with multiple installments?
POST /carnes with the customer details and the list of installments. Boleto Cloud creates the full series of boletos as one carnê document, useful for annual subscription or tuition billing.
What are the rate limits for the Boleto Cloud API?
Formal rate limits are not declared in the OpenAPI spec. For high-volume issuance, prefer POST /batch/boletos over many single calls — batch is the supported path for monthly billing runs.
How do I reconcile paid boletos through Jentic?
Search Jentic for 'submit CNAB return file', load the POST /arquivos/cnab/retornos operation, then execute it with the bank's daily return file. Boleto Cloud parses the file and updates registration status for each boleto.
GET STARTED