# Alibaba Sentinel

**Canonical:** https://apis.io/providers/alibaba-sentinel/  
**Website:** https://sentinelguard.io/  
**APIs profiled:** 4

Alibaba Sentinel is a powerful open source flow control component enabling reliability, resilience, and monitoring for microservices. Originally developed by Alibaba and used in production at Alibaba for over 10 years, Sentinel provides flow control, traffic shaping, concurrency limiting, circuit breaking, and system adaptive overload protection. The project is written primarily in Java with a Go implementation (sentinel-golang) also available. Sentinel integrates with major frameworks including Spring Cloud, Dubbo, gRPC, Apache RocketMQ, and Servlet. It provides a real-time monitoring dashboard for visualizing metrics and configuring rules dynamically. The project is hosted on GitHub under the Alibaba organization and is widely adopted in cloud-native microservice architectures.

## Kin Score — 29.1 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 29.1).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 46.9 |
| Governance | 26.5 |
| Contract Governance | 26.5 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 17.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (4)

- **Alibaba Sentinel Authority Rules API** — The Authority Rules API from Alibaba Sentinel — 1 operation(s) for authority rules.
- **Alibaba Sentinel Degrade Rules API** — The Degrade Rules API from Alibaba Sentinel — 2 operation(s) for degrade rules.
- **Alibaba Sentinel Flow Rules API** — The Flow Rules API from Alibaba Sentinel — 2 operation(s) for flow rules.
- **Alibaba Sentinel System Rules API** — The System Rules API from Alibaba Sentinel — 1 operation(s) for system rules.

## MCP servers (1)

- **Alibaba Sentinel MCP Server**

## Agentic access (1)

- **Alibaba Sentinel Agentic Access** — 9 operations · 5 acting

## Security (1)

- **Alibaba Sentinel Domain Security** — TLSv1.2

## Tags

Alibaba, Circuit Breaker, Flow Control, Java, Microservices, Rate Limiting, Resilience, Traffic Shaping, Open-Source, Cloud-Native, Spring Cloud

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