# SOAP

**Canonical:** https://apis.io/providers/soap/  
**Website:** https://www.w3.org/TR/soap12/  
**APIs profiled:** 1

SOAP (Simple Object Access Protocol) is an XML-based messaging protocol for exchanging structured information in web services, standardized by W3C as SOAP 1.2 (2003). It provides a platform-independent, language-neutral framework for web service communication with built-in standards for security (WS-Security), reliable messaging (WS-ReliableMessaging), and transactions (WS-Transaction). SOAP messages consist of an Envelope containing an optional Header and a required Body.

## Kin Score — 20.3 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 20.3).

| Facet | Score |
|---|---|
| Discoverability | 61.1 |
| Contract Quality | 28.0 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 0.0 |
| 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 (1)

- **SOAP 1.2 Protocol** — SOAP Version 1.2 (W3C Recommendation, 2003/2007 Second Edition) is a lightweight protocol for exchanging structured information in a decentralized, distributed environment. It d...

## Security (1)

- **Soap Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Soap Plans Pricing**

## Tags

SOAP, Messaging Protocol, Web Services, XML, W3C Standard, Enterprise Integration, WS-Star

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