We Standardized the API. We Didn't Standardize the Application.

Key Takeaways

• Six APIs require distinct onboarding flows and credential formats
• Notion uses a single internal connection without client secret
• Slack offers a JSON/YAML manifest for full app configuration
• LinkedIn ties scopes to product tiers and verification steps

Pulse Analysis

The explosion of SaaS platforms has turned API integration into a core competency for modern businesses. Yet, as the author discovered by registering apps on Notion, Slack, LinkedIn, GitHub, Cloudflare and Google, the process remains a patchwork of proprietary forms, token types, and verification gates. This lack of uniformity forces engineers to maintain separate scripts, documentation, and support tickets for each provider, eroding the promised speed of cloud‑first development.

A closer look reveals why standardization is elusive. Notion treats an application as an "internal connection" with a single access token, eliminating client IDs and secrets. Slack, by contrast, spreads its configuration across seventeen pages, supports both bot and user token namespaces, and even offers a manifest file that can be exported as JSON or YAML. LinkedIn bundles scopes into tiered "products" and requires a company‑page verification step, while GitHub splits the experience between personal access tokens and OAuth apps, each with its own expiration rules. Cloudflare and Google add further nuances with custom rate‑limit settings and OAuth consent screens. These divergent models reflect each company’s legacy decisions and security priorities, but they also create friction for developers who must learn a new UI and data model for every integration.

The business impact is clear: fragmented onboarding translates into longer time‑to‑market, higher maintenance costs, and increased risk of misconfiguration. Industry observers are calling for a unified "application manifest" standard—similar to OpenAPI for endpoints—that would let developers describe credentials, scopes, and verification steps in a portable format. Such a standard could enable tooling that auto‑generates configuration, validates permissions, and streamlines token lifecycle management across providers. Until then, enterprises will continue to invest heavily in internal integration platforms to bridge the gap, making API standardization not just a technical nicety but a strategic imperative.