Feature

Structured Error Handling

Machine-readable, documented error responses.

6 providers 13 APIs 3 declared variants

Errors carry stable codes and structured detail rather than prose, and the catalog of failures is documented. Determines whether an integrator can handle failure automatically.

6 API providers on the APIs.io network offer structured error handling. The highest-rated are Zapier, Microsoft Power Automate, Workday Studio, Amazon Step Functions, PolyAPI.

Providers

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready

Zapier Zapier is an automation platform that connects different apps and services to automate workflows without re... 4 APIs 73.2 Microsoft Power Automate Microsoft Power Automate is a cloud-based service that helps you create automated workflows between your fa... 1 API 71.3

Strong 3 Solid coverage with minor gaps

Workday Studio Workday Studio is an integrated development environment (IDE) for building custom integrations and applicat... 5 APIs 63.6 Amazon Step Functions Amazon Step Functions is a serverless workflow orchestration service that lets you coordinate distributed a... 1 API 62.1 PolyAPI Poly, built using cutting-edge AI and Kubernetes-native technology, accelerates development and simplifies ... 1 API 60.7

Developing 1 Usable, with meaningful gaps to close

AWS Step Functions AWS Step Functions is a serverless orchestration service that lets you coordinate distributed applications ... 1 API 57.6

What Providers Actually Declared

This feature is a canonical term. These are the free-text strings providers wrote in their own apis.yml that map onto it.

Error HandlingError handling, paths, filters, formattersFlow Control and Error Handling

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