AtFlows

See what your LLM calls cost. One command. No cloud signup.

AtFlows is a local observability tool for LLM applications. Point your SDK at it, see your costs, tokens, and latency in real-time.

python -m pip install atflows
atflows init

AtFlows 0.1.1 adds optional AtMem-owned dashboard login. AtFlows uses Bun (>=1.1.0) to run its local server. Install Bun before starting the command. The first launch prepares the bundled runtime in ~/.cache/atflows and needs package network access.

atflows init creates a temporary Local Administrator password, starts the server, and opens the sign-in page with it filled in. Choose a permanent password to finish setup. If access is lost, run atflows users recover-administrator; it issues a new temporary password. OTLP ingestion and the model proxy remain available to configured clients.

Run atflow or atflow status to list live dashboard and proxy addresses. atflows status does the same; atflows starts a server as before. Use atflow start to start one through the short command.

Dashboard: localhost:1337 by default · Proxy: localhost:8080

Both listeners bind to 127.0.0.1 by default. DASHBOARD_HOST and PROXY_HOST can change their bind addresses for a trusted deployment; OTLP ingestion has no built-in authentication. To use one AtMem account for both dashboards, start the AtMem dashboard and run ATFLOWS_ATMEM_AUTH_URL=http://127.0.0.1:ATMEM_PORT atflows init with its actual port. Open both dashboards using 127.0.0.1. AtMem then owns users, roles and passwords; AtFlows' local accounts are inactive until you restart without this setting. See users and access.

Get started

See the setup and connection guide and the integration catalog for provider routes, telemetry, and tool-specific instructions. Working recipes cover Claude Code, OpenClaw, LangChain, Pydantic AI, and AtBots. Choose a connection in the dashboard for your running addresses and guided steps. See the 0.1.1 release notes for changes and current limitations.

Development

AtFlows is a Bun workspaces monorepo (apps/server, apps/dashboard, plus six packages under packages/). Bun is required.

# Clone and install (one workspace install at root covers every package)
git clone https://github.com/aetna000/atflows.git
cd atflows && bun install

# Server (dashboard on :1337, proxy on :8080)
bun run dev

# Dashboard dev server with HMR (separate terminal, proxies /api + /ws)
bun run dev:dashboard

# Build dashboard for production (outputs to /public/)
bun run build

# Tests
bun run test                # server unit/integration
bun run --filter @atflows/dashboard test    # viewport vitest suite
bun run test:e2e            # Playwright

The dashboard is Svelte 5 + Vite 8 and builds to /public/ at the repo root. The bin entry bin/atflows.js (for the npm workspace) spawns apps/server/src/server.ts directly.

Advanced Features

For advanced usage, see the docs/ folder:

• Observability Backends - Export to Jaeger, Langfuse, Phoenix
• Architecture pathway - Production storage, CLI/MCP, AtMem/AtBot, and Jev requirements
• Spec Kit workflow - Constitution and feature specifications

License

AtFlows changes by Javad Taghia are licensed under Apache 2.0. The inherited LLMFlow code remains subject to its original MIT license and Helge Sverre copyright notice. Both license texts and the NOTICE are included with the Python package.

Credits

AtFlows is a rebrand and continuation of LLMFlow by Helge Sverre. Original code remains under the MIT license in LICENSE-MIT-LLMFLOW. Rebrand, packaging and dashboard work by Javad Taghia.