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Listed in Coding & Development with 349 other toolsPart of 2034+ curated AI tools on AISO
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Buildy

Apps your agent builds that stay live at their own URL, updatable from chat or the app itself

0
freemiumFree for the first app with no signup until you decide to keep it. An anonymous app creation mints the app plus a one-time app-scoped token, and the agent keeps building against that token — no signup wall, no metering on the create call and no card on file before you claim. Anonymous apps carry a 7-day TTL from creation and are reaped if never claimed; signing in claims the app, transfers ownership, makes persistence indefinite and swaps the app-scoped token for an account-wide user token. There is no enforced app cap per account today beyond fair use, and free-tier rate limits plus per-app size caps apply to every account. The published pricing document names its own source of truth — the OpenAPI spec, the per-route rate-limit handlers and the auth token TTL constants — rather than asserting the numbers.View full pricing →

About Buildy

Buildy solves a specific failure of chat-based app generation: the app dies with the conversation. When your agent builds something on Buildy, it stays live at its own URL after the chat ends, and you keep using and updating it. The flow is that you add Buildy to whatever AI chat you already use — the site lists ChatGPT, Claude, Claude Code, Cursor, Codex, Gemini, Grok, Perplexity, OpenClaw and Goose — ask for an app, and get back a running URL such as app.buildy.so/you/workout-tracker. From then on the app is dual-headed: you can open it directly on your phone and add an entry through its own interface, or you can tell your agent in chat and it writes to the same app. The worked example on the homepage shows a run log where saying today's run, 3.2 miles in chat and tapping Add entry in the app produce one identical record, and the agent can then answer questions about the stored data. Because the agent that builds it already holds your context, the app arrives with your details filled in rather than as an empty template. The technical surface is documented openly — a REST API with an OpenAPI spec, per-route rate limits and token TTLs, an anonymous app token model and a device-pairing recovery flow — and the pricing page is itself published as machine-readable markdown citing the source files behind every number.

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Key Features

Apps persist at their own URL after the chat that created them ends
Works from ChatGPT, Claude, Cursor, Codex, Gemini, Grok, Goose and others
Same data whether you edit in the app or tell your agent
Arrives pre-filled with the context your agent already has
No signup to create — claim later to keep the app permanently
Documented REST API, OpenAPI spec and device-pairing recovery flow

Buildy Pros & Cons

Pros

  • +Zero-friction start — build an app before you have an account
  • +Agent-agnostic rather than tied to one chat vendor
  • +Unusually honest pricing doc that cites the code behind each limit

⚠️ Cons

  • Anonymous apps vanish after 7 days if you forget to claim them
  • Rate limits and per-app size caps are not published as concrete numbers on the summary
  • Personal-scale apps — not a path to a production multi-user product

Tags

agentsapp-builderpersonal-appsapimcpno-signup
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