Notes

How X API pay-per-use pricing works for small tools

How X API credits are charged per request and per resource, what posts and reads cost as of November 2026, and how to keep a small tool's bill predictable.

What changed when X moved to API v2

The practical differences from v1.1: versioned endpoints, opt-in fields, and OAuth 2.0 PKCE, for anyone porting a client.

Building on the free tier without hitting a wall

What the X API free tier allows, the documented posting limits, and how to design a small tool that stays inside them.

Self-hosting an open-source X client

A checklist for running an open-source X client on your own machine: credentials, secrets, a reverse proxy, and staying current.