Cole Foster — WritingNotes on the projects on colefoster.ca.https://colefoster.ca/en-caGiving a coding agent an API key without pasting it into chathttps://colefoster.ca/blog/keyrelay/https://colefoster.ca/blog/keyrelay/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.Tue, 13 Oct 2026 00:00:00 GMTChecking the address a headless browser actually connects tohttps://colefoster.ca/blog/pagewright/https://colefoster.ca/blog/pagewright/Pagewright is a small self-hosted render API. Keeping its headless browser off my network meant vetting the IP of every connection it makes.Tue, 13 Oct 2026 00:00:00 GMTRanking checkpoints that are too close to callhttps://colefoster.ca/blog/ranking-checkpoints/https://colefoster.ca/blog/ranking-checkpoints/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.Tue, 13 Oct 2026 00:00:00 GMT