Cloud & Developer Tools on APIs.io: Where the Agent Stack Gets Built

Cloud & Developer Tools is the vertical with the largest raw API surface in the catalog at 616 providers across 3,911 APIs, and the one quietly reinventing itself in 2026 as the platforms developers ship software with become the platforms shipping the infrastructure agents run on. The post highlights multi-plane surfaces like Datadog’s 85 APIs and GitHub’s 65, and points to the AI-gateway and MCP columns as where 2026 is concentrated.