# Vercel Eve Vercel Eve is an open-source [[TypeScript]] framework for building, running, and scaling durable [[AI Agents|agents]], launched in public preview on June 17, 2026. The premise: every team kept rebuilding the same plumbing (sessions, sandboxing, channels, approvals) before their agent could do anything useful. Eve provides that plumbing so you write the agent, not the infrastructure. It is the framework underneath the [[Vercel Personal Agent Template]]. ## Filesystem-first design An agent is a directory. File location and naming define its capabilities: a tool is a single TypeScript file in `tools/`, a skill is a Markdown file, MCP servers go in `connections/`, recurring work in `schedules/`. The same directory runs locally and in production unchanged. ## Core concepts - **Sessions**: more than request/response. A session streams progress, calls tools and subagents, pauses for approval or a human answer, resumes when it arrives, and keeps durable state across turns - **[[Durable Execution]]**: built on the open-source Workflow SDK, so sessions are resumable and crash-safe and can pause for approval indefinitely without consuming compute - **Sandboxed execution**: every agent gets an isolated environment for shell, scripts, and file I/O (Vercel Sandbox in production; Docker/microsandbox locally) - **Subagents**: delegate to child agents with their own context - **Multi-channel**: one agent serves every surface (HTTP, Slack, Discord, Teams, GitHub, Linear, custom) - **Evals + OpenTelemetry**: scored test suites before deploy, plus tracing across model and tool calls ## Ecosystem - Schema validation with Zod; connects to [[Model Context Protocol (MCP)|MCP]] servers and OpenAPI services - Vercel Connect (OAuth/token management), Vercel Sandbox (isolation), Vercel Cron (scheduling) - Default model is Claude Opus, with any provider via AI Gateway - Vercel runs 100+ agents internally on it (e.g. a data analyst handling ~30,000 questions a month) ## References - https://github.com/vercel/eve - https://eve.dev/docs/introduction - https://eve.dev/integrations - https://vercel.com/blog/introducing-eve ## Related - [[Vercel]] - [[Vercel Personal Agent Template]] - [[Durable Execution]] - [[AI Agents]] - [[Agentic Engineering]] - [[TypeScript]] - [[Model Context Protocol (MCP)]]