# stackin-io

**Canonical:** https://apis.io/providers/stackin-io/  
**Website:** https://stackin.io/  
**APIs profiled:** 1

Stackin provides a Brazilian fiscal API platform that enables developers to issue electronic invoices (NF-e) and service invoices (NFS-e) via a simple REST interface. The service handles document generation, tax calculation, and submission to government tax authorities, offering both sandbox (free) and production environments with dashboards for tracking. It aims to simplify compliance for SaaS, e‑commerce, and ERP solutions in Brazil.

## Kin Score — 61.9 / 100 (strong)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 65.0 |
| Contract Quality | 46.9 |
| Contract Governance | 79.1 |
| Operational Transparency | 33.7 |
| Developer Ergonomics | 61.2 |
| Access Clarity | 73.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 34.3 (matched via fallback).

## Agent readiness — 47.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | unknown |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |

## APIs (1)

- **stackin-io API** — stackin-io API as documented publicly: 2 operations. Contract generated from the documentation by API Evangelist (2026-10-31); not the provider's own document.

## MCP servers (1)

- **stackin-io MCP Server** — Remote MCP server at mcp.stackin.io.

## Security (2)

- **Stackin Io Authentication** — 1 scheme
- **Stackin Io Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Stackin Io Plans Pricing**

## Tags

Finance, Tax, Brazil, Invoicing, SaaS

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/stackin-io/). Scores are computed from the provider's own public artifacts under a published rubric.