loom-code 0.3.3

loom-code — a loomflow-native terminal coding agent

loom-code

A terminal coding agent built on loomflow. Plans before it codes, asks before it breaks things, works with any model — including free ones.

›  add a retry decorator to the http client

● loom
Added `retry(max_attempts=3, backoff=2.0)` to http/client.py and wired it
onto get() and post(). Tests pass (14/14).
───────────────────────────────────────────── 12,431 in · 217 out · $0.0043

loom-code is a thin terminal shell — the brain is loomflow. The CLI detects your project, builds a loomflow Agent, streams the run to your terminal, and gates destructive tool calls behind an approval prompt. Everything load-bearing — the agent loop, tools, planning, memory — is loomflow.

Highlights

• Plans before it codes. Every task gets a living plan (TodoWrite-style), visible as it progresses, hard to drift from.
• Any model, including free ones. OpenAI, Anthropic, NVIDIA's free NIM tier, local Ollama, or anything LiteLLM routes (Groq, Together, Azure, Bedrock, Vertex…). /set_model walks you through provider → API key → model with arrow-key menus.
• Claude-Code-style permissions. Reads are lenient, writes are strict. Every write/edit/shell command routes through an approval gate with a unified-diff preview. Allow/ask/deny rules, approval modes (default / accept-edits / plan / yolo), and an optional OS-level bash sandbox (--sandbox).
• Specialist sub-agents on demand. The main loop can call explore (read-only investigation) and review (independent verification) as tools — one coherent thread, specialists when they earn their keep.
• Session isolation. /isolate runs the session in its own git worktree; /review shows the diff, /merge or /discard ends it. Auto-checkpoints before every edit; /undo restores.
• Gets sharper at your repo. A per-project notebook plus episode memory (.loom/) — notes the agent used get credited when a turn goes well, so future runs surface what worked. /good and /bad train it.
• Cost you can see. Every response closes with that turn's tokens and dollar cost (free on free tiers). /cost has session totals.
• MCP out of the box. Connect Linear, Sentry, Postgres, Playwright, or any MCP server; /mcp lists what's live.
• Goal mode. /goal make all tests pass keeps working until the condition is verifiably met.

Install

pipx install loom-code

(pip install loom-code works too; pipx keeps CLI tools in their own venvs. No pipx? brew install pipx or python -m pip install --user pipx.)

Requires Python 3.11+. To update: pipx upgrade loom-code.

Quickstart

cd ~/your-project
loom-code

First run: type /set_model, pick a provider with the arrow keys, paste your API key once (it's saved for future sessions), pick a model. No paid key? Pick NVIDIA — free at build.nvidia.com.

Then just type what you want:

›  fix the failing test in tests/test_auth.py
›  add a /users endpoint with pagination
›  why is startup slow? profile it

One-shot mode (does the task, prints a summary, exits):

loom-code "add a retry decorator to the http client"
loom-code --yes "scaffold a FastAPI backend"   # skip approval prompts

Works on existing code and empty directories alike — scaffolding new projects is a first-class path.

The interface

loom-code runs a full-screen chat UI: the conversation scrolls in a pane, the input box stays pinned at the bottom, and it grows as you type. Enter sends; Alt+Enter adds a newline. Scroll the history with the mouse wheel, PageUp/PageDown, or Ctrl-Up/Down; End jumps back to live. Typing / pops the command menu.

Prefer a plain inline prompt (or on a terminal the full-screen UI doesn't suit)? loom-code --classic. Piped/non-TTY use falls back to classic automatically.

Models

model string	provider	env key
claude-opus-4-8, claude-sonnet-4-6, …	Anthropic	ANTHROPIC_API_KEY
gpt-4.1, gpt-4.1-mini, o4-mini, …	OpenAI	OPENAI_API_KEY
nvidia/… (Nemotron, Llama, DeepSeek)	NVIDIA NIM — free tier	NVIDIA_NIM_API_KEY
ollama/llama3, ollama/qwen2.5-coder, …	local Ollama — free, offline	—
litellm/<provider>/<model>	anything LiteLLM routes	provider's own

Switch anytime with /model <name> or the guided /set_model. Reasoning models support /effort low|medium|high.

Tip: tool-heavy agent work needs a model with solid function calling. On the free NVIDIA tier, deepseek-v4-pro and nemotron-super-49b hold up well; tiny models fumble tool calls.

Safety & permissions

The permission layer is the boundary, not the working directory:

• Reads anywhere are allowed; writes outside the project are only possible for files you referenced, and always show a diff prompt — in every mode, even --yes.
• Approval modes (/mode): default asks for writes and shell; accept-edits auto-approves in-project edits; plan is read-only; yolo approves everything except your deny rules.
• Rules live in .loom/settings.toml — glob-based allow / ask / deny per tool (e.g. deny = ["edit(*.env)"]). Deny always wins, even in yolo.
• Sandbox: --sandbox runs bash under OS-level isolation (writes limited to the repo, network off unless --sandbox-allow-network).
• Irreversible commands (git push --force, rm -rf, …) always get an explicit prompt.

Commands

Type / in the REPL — the menu autocompletes. Highlights:

/plan	show or start the living plan
/goal <condition>	work until the condition is met
/undo · /checkpoints	restore / list auto-checkpoints
/isolate · /review · /merge · /discard	worktree-isolated sessions
/model · /set_model · /effort · /mode	model + approval setup
/set_web	web search (Serper / DuckDuckGo)
/mcp	list connected MCP servers
/cost · /compact · /export	session accounting + history
/resume	pick up the last session for this project
/good · /bad	credit / debit the agent's notes

Project context

loom-code reads LOOM.md / CLAUDE.md / AGENTS.md / .loom/context.md at the project root and treats it as binding house rules. /init-loom creates a starter file.

Development

git clone https://github.com/Anurich/loomflow-cli
cd loomflow-cli
python -m venv .venv && source .venv/bin/activate
pip install -e ".[dev]"
pytest -q          # 465 tests
ruff check .

Architecture in one line: loom-code is deliberately thin — if a capability belongs in the agent loop, it goes in loomflow, not here. See DESIGN.md for the boundary.

License

MIT — see LICENSE.