# RESTful Services

**Canonical:** https://apis.io/providers/restful-services/  
**APIs profiled:** 5

Representational State Transfer (REST) services are web services built using the REST architectural style, which uses stateless HTTP communication and standard HTTP methods (GET, POST, PUT, DELETE, PATCH) to expose resources. RESTful services are the dominant pattern for modern public APIs and microservices. This index covers the REST architectural style, key design principles, tooling ecosystem, and notable frameworks for building REST services across all technology stacks.

## Kin Score — 17.9 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 17.9).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 10.7 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 2.5 (human-only)

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

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (5)

- **Standards.REST** — A curated collection of standards, conventions, and best practices for building RESTful APIs, including HAL, JSON:API, Siren, Collection+JSON, and HATEOAS patterns.
- **Zalando RESTful API and Event Guidelines** — Zalando's comprehensive and widely-adopted RESTful API design guidelines, covering naming conventions, HTTP methods, versioning, error handling, pagination, and hypermedia.
- **Microsoft Azure REST API Guidelines** — Microsoft's official REST API design guidelines for Azure services, covering resource naming, versioning, HTTP semantics, long-running operations, and error responses.
- **AWS API Gateway** — Amazon Web Services fully managed service for creating, publishing, maintaining, monitoring, and securing REST APIs at any scale.
- **Google Apigee API Management** — Google Cloud's API management platform for building, managing, and securing RESTful APIs. Provides analytics, developer portal, rate limiting, and policy management.

## Security (1)

- **Restful Services Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Restful Services Plans Pricing**

## Tags

Architecture, HTTP, Microservices, REST, Web Services

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