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eve-studio

v0.1.2

Published

Local observability workspace for eve agents. Inspect live sessions, messages, tool calls, steps, and usage in your browser.

Vulnerabilities

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Links

Git

Maintainers

chrisjaydenchrisjayden

Keywords

eveai-agentsagent-observabilityagent-debuggingdeveloper-toolscli

Readme

eve-studio

Local observability workspace for eve agents. Inspect live sessions, messages, tool calls, steps, and usage in your browser.

Requirements

  • Node.js 24 or newer
  • A stable eve release in >=0.22.3 <0.23.0

Usage

npx eve-studio

Resolves the Eve project in the current directory (or prompts if there are several), checks the installed eve version, offers to mount the Studio capture extension if it isn't mounted yet, then starts the server.

The mount prompt never overwrites an existing agent/extensions/studio.ts. If that path already contains other code, Studio leaves it alone and prints the manual setup.

Flags

| Flag | Default | Description | | ------------- | ------- | ---------------------------------------------------------------------------- | | --port | 43110 | Port to listen on. Pair with EVE_STUDIO_PORT (see below) if you change it. | | --project | (auto) | Path to the Eve agent project to watch, skipping auto-detection. | | --scan-disk | off | Also ingest historical sessions from .workflow-data on startup. | | --yes | off | Auto-confirm the extension mount prompt (useful in CI/non-interactive runs). |

The EVE_STUDIO_PORT pairing rule

eve-studio never silently picks a different port if --port is taken: it exits with an error instead. If you must run on a non-default port, set the same port on both sides: pass --port <n> to eve-studio and set EVE_STUDIO_PORT=<n> in the agent's environment, so the mounted extension forwards events to the port eve-studio is actually listening on. Mismatched ports mean the extension forwards into the void.

What you get today

The CLI starts the capture server and prints where to find the raw session snapshot (GET /api/sessions) and the live event stream. See "Browser UI" below for the SPA that ships alongside it.

The server binds only to 127.0.0.1. Captured data stays in the collector's in-memory registry and is not uploaded by eve-studio.

Browser UI

When dist/ui/_shell.html exists (produced by the root pnpm build:studio), the collector serves the SPA at http://127.0.0.1:43110 alongside the API: same process, same port, no CORS. Without it, eve-studio runs API-only and says so at startup. /health reports studioVersion and eveVersion (the eve this package bundles for reduction); the UI banners any session whose agent-side eve differs.

Support