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Relay.app

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The AI automation platform you'll love to use — describe what you want, and Relay.app builds it.

Free tier available·All audiences·API available
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Key strengths

Chat-first AI workflow builder powered by Opus 4.8200+ app integrations with deep, fine-grained access controlHuman-in-the-loop approval and review stepsAdvanced primitives: dynamic waiting, branch merging, portable rich textMCP server creation to expose custom tools to AI apps like ChatGPT and Claude
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Relay.app is a cloud-based automation platform with a chat-first workflow builder powered by Opus 4.8, enabling natural-language-to-workflow generation. It supports 200+ app integrations with webhook triggers, scheduled runs, form triggers, mailhooks, and table-row triggers. Developers can build reusable Sequences, structured Tables, and MCP (Model Context Protocol) servers to expose custom tools to external AI apps such as ChatGPT, Claude, and ElevenLabs. The platform offers advanced control-flow primitives including conditional branching, branch merging, loops, dynamic waiting, and portable rich text outputs compatible with HTML and Markdown consumers.