Writing
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Giving a coding agent an API key without pasting it into chat
Coding agents tell you not to paste keys into chat but give you nowhere else to put them. Keyrelay is a one-time local page for that handoff.
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Checking the address a headless browser actually connects to
Pagewright is a small self-hosted render API. Keeping its headless browser off my network meant vetting the IP of every connection it makes.
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Ranking checkpoints that are too close to call
Accuracy, a local arena and the ladder couldn't rank my VGC bot's sibling checkpoints. Boards with calc-proven answers couldn't either, but they found mistakes.