Stone

Stone is a Brazilian financial technology company offering REST APIs for payment processing, Pix instant payments, digital banking accounts, boleto issuance, credit products, payment links, and stone-terminal management for merchants. Their platform enables businesses to authorize, capture, cancel, and query transactions across online and physical sales channels.

Stone is listed with 4 APIs on the APIs.io network. Tagged areas include Payments, Fintech, Pix, Brazil, and Digital Banking.

The Stone catalog on APIs.io includes 1 JSON-LD context.

Stone’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

14.6/100 emerging ▼ -5.6 Agent 1/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

AccessFreeApproval

4 APIs

Payments Fintech Pix Brazil Digital Banking Payment Processing Boleto Financial Technology

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 14.6/100 · emerging

Contract Quality 1.4 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 1.3 / 17

Operational Transparency 2.3 / 11

Contract Governance 0.0 / 10

Discoverability 5.3 / 9

Regulatory Posture 1.5 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/stone: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Latin American Open Finance (Brazil OFB + Pix)	regulated	70.8	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Stone Online API

The Stone Online transactional API for authorizing, capturing, canceling, and querying payment transactions for online and physical sales platforms. Supports credit card, debit,...

Stone OpenBank API

Stone's open banking REST API providing digital account management, internal and external transfers, Pix instant payments, boleto issuance, payment links, QR code generation, co...

Stone Connect API

API for connecting point-of-sale systems to Stone payment terminals (maquininhas), enabling merchants to integrate physical payment acceptance into their business software.

Stone Conciliation API

Backoffice API for monitoring sales, installments, cancellations, and financial reconciliation data for Stone merchants.

Pricing Plans 1

Published pricing tiers and plan structures.

Stone Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Stone Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Stone Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Stone Context

0 classes · 0 properties

JSON-LD

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Stone Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: stone
name: Stone
description: Stone is a Brazilian financial technology company offering REST APIs for payment processing, Pix instant payments,
  digital banking accounts, boleto issuance, credit products, payment links, and stone-terminal management for merchants.
  Their platform enables businesses to authorize, capture, cancel, and query transactions across online and physical sales
  channels.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Free · Requires approval
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stone.png
url: https://raw.githubusercontent.com/api-evangelist/stone/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Payments
- Fintech
- Pix
- Brazil
- Digital Banking
- Payment Processing
- Boleto
- Financial Technology
apis:
- name: Stone Online API
  description: The Stone Online transactional API for authorizing, capturing, canceling, and querying payment transactions
    for online and physical sales platforms. Supports credit card, debit, and voucher payments with sandbox and production
    environments.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://online.stone.com.br/docs/o-que-e-o-stone-online
  baseURL: https://online.stone.com.br
  tags:
  - Payments
  - Transaction
  - Authorization
  - Capture
  - Cancel
  tags_raw:
  - Payments
  - Transactions
  - Authorization
  - Capture
  - Cancel
  properties:
  - type: Documentation
    url: https://online.stone.com.br/docs/o-que-e-o-stone-online
  - type: Reference
    url: https://online.stone.com.br/reference/overview-da-api
- name: Stone OpenBank API
  description: Stone's open banking REST API providing digital account management, internal and external transfers, Pix instant
    payments, boleto issuance, payment links, QR code generation, contacts, receipts, KYC, recharges, and scheduling capabilities
    for fintech integrations.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.openbank.stone.com.br/docs/
  baseURL: https://sandbox.openbank.stone.com.br
  tags:
  - Pix
  - Digital Banking
  - Transfers
  - Boleto
  - Payment Links
  - KYC
  - Recharges
  properties:
  - type: Documentation
    url: https://docs.openbank.stone.com.br/docs/
  - type: Reference
    url: https://docs.openbank.stone.com.br/docs/referencia-da-api/
- name: Stone Connect API
  description: API for connecting point-of-sale systems to Stone payment terminals (maquininhas), enabling merchants to integrate
    physical payment acceptance into their business software.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.stone.com.br/devcenter
  tags:
  - Point-of-Sale
  - Terminal
  - Physical Payments
  - Merchants
  tags_raw:
  - POS
  - Terminal
  - Physical Payments
  - Merchants
  properties:
  - type: Documentation
    url: https://www.stone.com.br/devcenter
- name: Stone Conciliation API
  description: Backoffice API for monitoring sales, installments, cancellations, and financial reconciliation data for Stone
    merchants.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.stone.com.br/devcenter
  tags:
  - Conciliation
  - Financial Reporting
  - Back Office
  - Reconciliation
  tags_raw:
  - Conciliation
  - Financial Reporting
  - Backoffice
  - Reconciliation
  properties:
  - type: Documentation
    url: https://www.stone.com.br/devcenter
common:
- type: DomainSecurity
  url: security/stone-domain-security.yml
- type: Website
  url: https://www.stone.com.br
- type: Documentation
  url: https://docs.openbank.stone.com.br/docs/
- type: GitHubOrg
  url: https://github.com/stone-payments
- type: LinkedIn
  url: https://www.linkedin.com/company/stone-co
- type: Blog
  url: https://conteudo.stone.com.br/
- type: Pricing
  url: https://www.stone.com.br/devcenter
- type: StatusPage
  url: https://docs.openbank.stone.com.br
- type: X
  url: https://x.com/sejastone
- type: Plans
  url: plans/stone-plans-pricing.yml
- type: RateLimits
  url: rate-limits/stone-rate-limits.yml
- type: FinOps
  url: finops/stone-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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