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AI · September 18, 2026

Mantle

Open-source service builder for humans and AI agents

Mantle launched on September 18, 2026 with 58 votes, #560 of 8,042 launches that month and more than 95% of that year's launches.

Visit mantle.tools ↗Mantle alternativestop 7% of September 2026

What it does

Describe a business workflow and ship an agent-ready service with API, MCP, WebMCP, and an admin interface.

Your agent writes one YAML Manifest. Mantle validates the configuration and handles the runtime complexity. Download the handoff package. Your coding agent adds a frontend and authentication, then prepares your service for deployment to Cloudflare. Choose the workflow closest to your needs. Your agent will ask a few questions, adapt the Manifest, and ask for your approval before applying changes. Looks like you’ve built something before. Open it in Builder → Enable its WebMCP client to use these workflows with your agent. Request forms, lead capture, applications, support intake, and staff review queues. Starts with public request intake, typed validation, HTTP/MCP entry points, and a staff…from mantle.tools

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