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The API Changelog

Bruno Pedro, Vania Coelho

Curated API moves. Unfiltered expert takes.

Platform
Substack
PricingOnly free issuesPublishesTwice weekly
Issues282Founded7 years agoLast Issue8 days ago
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Latest Issues

Interactive API Testing as the Primary Interface

Reading isn’t enough when you want to learn something new. To actually learn how to do something, you need to try it. Perhaps you’ll fail a few times, but that’s all part of the learning process. Figuring out how to use an API isn’t any dif...

8 days ago

Capabilities, Capabilities, Capabilities

When a word means everything, it means nothing. Some words seem more prone to being overloaded than others. In our case, that word is capability. The trouble is that different people end up using it to convey different meanings. When engine...

15 days ago
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2

Why AI Agents Need Standard Observability

There’s no way to know what an AI agent is doing. Not in the sense of knowing exactly the steps the agent took to complete a task, or to reach a failing state. There’s no backtrace, no information about why something didn’t work. The only t...

a month ago
2

Can MCP Servers Finally Get Their Own OpenAPI?

You don't know what MCP servers do. Not until you connect and run the tools/list method. And MCP servers are everywhere now. Every AI product wants one, every API team is being asked to build one, and the ecosystem is moving faster than y...

a month ago
2

Why AI Agents Don't Need Your Full API

The easiest thing you can do is make your entire API available to AI agents. However, "by presenting the LLM with fewer, more relevant tools, we reduce confusion, allowing the model to focus better and achieve higher accuracy"1. You see, di...

a month ago

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  • Bruno Pedro

    Author of "Building an API Product."

  • Vania Coelho

    Editor of the API Changelog

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