API Articles

An illustration of a small service counter set on an open map, with envelopes passing back and forth across it, and the words 'Speak the Server's Language' worked into the scene

What Does an MCP Server Actually Listen For?

2026.08.07

This is part 2 of a six-part series called “…

An illustration of a browser app that takes a natural-language question, has an AI draft SQL, queries a relational database, and returns a table, with the headline 'Where's the Client, Really?' worked into the scene

Where Does the MCP Client Actually Live?

2026.08.07

This is part 1 of a six-part series called “…

Illustration captioned 'Order decides everything' with a 400 marking, showing a letter being intercepted by the wrong window instead of the one it was addressed to

Your routing might be decided by ordering alone

2026.08.06

A request that should work comes back as 400 You a…

Blog header illustration for "Understanding Claude API Rate Limits" featuring a male figure and icons representing API usage limits and token counts

Understanding Claude API’s Usage Restrictions: Rate Limits Explained

2025.05.13

Hello everyone. I’m AM from the Efficiency I…

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