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React is a JavaScript library for building user interfaces with declarative, component-based, and cross-platform design.
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FR-AI / ANALYSISWhy it is worth attention
It demonstrates a novel architecture where an existing server-based agent runtime is repurposed as a library inside a serverless database platform, achieving both durability and low latency.
Who it is for
- Developers building AI agents
- Convex users seeking advanced workflow capabilities
- Vercel eve users looking for alternative hosting
- Developers interested in serverless durable execution
Use cases
- Building persistent AI chat agents with human-in-the-loop approval
- Creating agents that perform long-running tasks by chunking work
- Deploying agents that can be hot-swapped without full deployment
- Observability dashboards for agent runs
Strengths
- Eliminates external services (Postgres, Redis, HTTP server) by using Convex for state, queues, and scheduling
- Achieves low latency via inline fast path that reduces turn time to model latency
- Provides durable, event-sourced workflows with automatic retries, lease management, and dead-letter handling
- Supports hot-swapping agent bundles without Convex deploy, using file storage
Considerations
- Single step bodies (model calls, tool calls) cannot be suspended if they exceed action timeout; requires chunking or hooks
- Requires Node 24+ and pnpm 10
- Auth is BYOK for model credentials; public queries lack authentication (noted in README)
README quick start
adam
eve is Vercel's durable AI agent runtime. Out of the box it runs as a long-lived Node server and persists its state through the Workflow SDK's "world" — Postgres + Redis locally, Vercel's managed queues in production.
adam ports the whole thing onto Convex. Not just
the durable state — the execution engine itself. eve build is used as a
compiler; the emitted server bundle is vendored into the Convex deployment and
executed inside Convex "use node" actions. At runtime there is no eve
server. One Convex deployment runs and stores everything:
- The agent runtime — eve's workflow handler + channel API, invoked
in-process by Convex actions (
runner/engine,chat:send) - Workflow state — runs, steps, events, hooks (event-sourced, transactional)
- Message queue — leased jobs with retries, backoff, idempotency; delivery is driven by the Convex scheduler, with crons as a safety net
- Live streams — model/session output chunks written to Convex, decoded server-side and tailed reactively by the UI
- Schedules — eve's markdown schedules (
heartbeat.md) mapped to Convex crons - App data — the demo agent's "team notepad" tool writes ordinary Convex documents next to the workflow tables
- The dashboard itself — a Svelte 5 app served from Convex static hosting
┌──────────────────────────────────────────────────────────────────┐
│ Convex deployment (packages/backend) │
│ │
│ chat:send ─────────► eve channel API ─┐ │
│ (action, "use node") │ enqueue │
│ │ inline fast path ▼ │
│ └─► deliverSessionInline world/queue │
│ (same action) (mutations) │
│ │ ctx.scheduler │
│ ▼ │
│ runner/engine:tick │
│ (action, "use node") │
│ │ imports vendored eve bundle │
│ ▼ │
│ workflow P
Description
adam — Vercel's eve agent runtime with its entire durable world (state, queue, streams, UI) on Convex
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