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By My Side Labs

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

By My Side Labs — Demo video

Repeat less, together. An agent that notices a chore you keep repeating, builds a small app for it, and then does the repeats inside that app with you and your family. A household copies card payment texts into a ledger by hand, 34 times in two weeks. Muse Spark 1.3 spots this and writes an app spec, never code. Code checks the spec, a fixed renderer builds the app, and Muse Image draws its icon. After that, a repeat is a tap in the app (0 tokens), a spoken or pasted payment that becomes one add_record call, or a question answered by one exact query, so the model never re-reads the history. Muse Voice Transcribe hears spoken requests with the app's own words as keywords, and every amount the agent writes must be one the person actually said or pasted. A family member joins as a member, and her own agent can work in the same app over MCP with her token. People, agents and MCP clients all go through the same operations and role checks. The owner changes the look by talking: one tool call, then code checks, a review by Muse Spark Open, and the app's own buttons clicked in a sandbox before the change goes live. Measured on the same model: asking the app costs 3,067 tokens per question against 33,114 for re-reading a year of payments (91% fewer), with 20/20 correct answers against 18/20. A change costs 64% less than rewriting the app file. The editor's reliability gate is 40/40 with no silent wrong edits. By My Side Labs ships BYVE, where people already create small apps from one sentence and use them together. This is the part where the agent finds the app you need, and then stops spending tokens on the same work.

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