dot-coding-agent 0.1.0

Minimal coding agent

Dot

Dot is a minimal coding agent that just works.

It has a tiny harness: about 215 tokens for the system prompt and around 600 tokens for tool definitions – so under 1k tokens before conversation context.

At the time of writing this README (22 Feb 2026), this repo has 108 files and is easy to understand in a weekend. Here’s a rough file-count comparison against a couple of popular OSS coding agents:

Others are of course more mature, support more models, include broader test coverage, and cover more surfaces. But if you want a truly minimal coding agent with batteries included – something you can understand, fork, and extend quickly – Dot might be interesting.

$ fd . | cut -d/ -f1 | sort | uniq -c | sort -rn
4107 opencode
 740 pi-mono
 108 dot

Setup

Warning

[!WARNING] Platform support: macOS and Linux are supported; Windows is not tested yet.

Prerequisites

Python 3.12+ and uv.

Install (recommended)

uv tool install dot-coding-agent

This installs dot globally as a CLI tool.

Install from source (advanced)

git clone <repository-url>
cd dot
uv tool install .

Run

dot

CLI options:

usage: dot [-h] [--model MODEL]
           [--provider {github-copilot,openai,openai-codex,openai-responses,zhipu}]
           [--api-key API_KEY] [--base-url BASE_URL] [--continue]
           [--resume RESUME_SESSION]

Dot TUI

options:
  -h, --help            show this help message and exit
  --model, -m MODEL     Model to use
  --provider, -p {github-copilot,openai,openai-codex,openai-responses,zhipu}
                        Provider to use
  --api-key, -k API_KEY
                        API key
  --base-url, -u BASE_URL
                        Base URL for API
  --continue, -c        Resume the most recent session
  --resume, -r RESUME_SESSION
                        Resume a specific session by ID (full or unique
                        prefix)

Tool binaries

• fd – required for fast file discovery; Dot auto-downloads it only if it's missing.
• ripgrep (rg) – required for fast content search; Dot auto-downloads it only if it's missing.
• eza (optional) – supports .gitignore-aware listings and usually emits fewer tokens than ls.

OAuth and API keys

• GitHub Copilot OAuth: run /login and choose GitHub Copilot.
• OpenAI OAuth (Codex): run /login and choose OpenAI. Dot supports callback flow plus manual paste fallback.
• OpenAI-compatible providers (for example ZhiPu): set an API key via environment variable (OPENAI_API_KEY or ZAI_API_KEY).

Features

Tools

Tool	Purpose
read	Read file contents (pagination for large files, image support)
edit	Surgical find-and-replace edits
write	Create or overwrite files
bash	Execute shell commands
grep	Search file contents with regex
find	Find files by glob pattern

Slash commands

Type / at the start of input to see available commands.

Command	Description
/new	Start a new conversation and reload project context/skills
/resume	Browse and restore a saved session
/model	Switch model via interactive picker
/session	Show session metadata and token stats
/compact	Compact the current conversation immediately
/export	Export current session to HTML
/copy	Copy last assistant response to clipboard
/login	Authenticate with a provider
/logout	Log out from a provider
/clear	Clear current conversation
/help	Show commands and keybindings
/quit (/exit, /q)	Quit Dot

@ file and folder search

Type @ + query to fuzzy-search files/folders in the current project and insert paths into your prompt.

Tab path autocomplete

Press Tab in the input box to complete paths (~, ./, ../, absolute paths, quoted paths, etc.).

Query queueing

If the agent is currently running, you can still submit more prompts. Dot queues them and runs them in order once the current task finishes (up to 5 queued prompts).

Sessions

Sessions are append-only JSONL files under ~/.dot/sessions/.

• /resume to reopen past sessions
• /session for message/token stats
• /export for standalone HTML transcripts
• --continue / -c to continue the most recent session from CLI

AGENTS.md

Dot loads project guidelines from AGENTS.md (or CLAUDE.md) files into the system prompt:

1. Global: ~/.dot/AGENTS.md
2. Ancestor directories from git root (or home) down to current working directory

Skills

Skills are reusable instruction packs loaded from:

• Project: .dot/skills/
• Global: ~/.dot/skills/

Each skill has a SKILL.md file with front matter:

---
name: my-skill
description: Brief description of what this skill does
---

# My Skill

Detailed instructions for the agent...

For skills with scripts, see Agent Skills Documentation.

Architecture

LLM Provider
    │
    │ StreamPart (TextPart, ThinkPart, ToolCallStart, ToolCallDelta, ...)
    ▼
Single Turn (turn.py)
    │
    │ StreamEvent (ThinkingStart/Delta/End, TextStart/Delta/End, ToolStart/End, ToolResult, ...)
    ▼
Agentic Loop (loop.py)
    │
    │ Event (AgentStart, TurnStart, TurnEnd, AgentEnd + all StreamEvents)
    ▼
UI (app.py)

Supported Models

Model	Provider	Thinking	Vision
glm-4.7	ZhiPu	Yes	No
glm-5	ZhiPu	Yes	No
claude-sonnet-4.5	GitHub Copilot	Yes	Yes
claude-opus-4.5	GitHub Copilot	Yes	Yes
claude-sonnet-4.6	GitHub Copilot	Yes	Yes
claude-opus-4.6	GitHub Copilot	Yes	Yes
gpt-5.3-codex	GitHub Copilot	Yes	Yes
gpt-5.3-codex	OpenAI Codex	Yes	Yes

Configuration

Config lives at ~/.dot/config.toml (auto-created on first run).

Most important knobs:

• llm.default_provider
• llm.default_model
• llm.default_thinking_level
• llm.system_prompt (you can fully override Dot’s system prompt here)
• compaction.on_overflow, compaction.buffer_tokens, compaction.default_context_window

You can also theme the UI via [ui.colors] values.

Example:

[llm]
default_provider = "openai-codex"
default_model = "gpt-5.3-codex"
default_thinking_level = "high"
system_prompt = """Your custom system prompt here"""

[compaction]
on_overflow = "continue"
buffer_tokens = 20000

Development setup

For hacking on Dot locally:

uv sync
uv run dot
uv run ruff format .
uv run pytest

Acknowledgements

• Dot takes significant inspiration from pi-mono coding-agent, especially in terms of the overall philosophy and UI design.
  • Why not just use pi? Pi is no longer a small project, and I want to be in complete control of my coding agent.
  • I mostly agree with Mario (author of pi), but I have different beliefs on some matters - for example, subagents (especially useful for context gathering in larger repos when paired with semantic search tools).
  • Over time, I also want to give more preference to local LLMs I can run. glm-4.7-flash and qwen-3-coder-next look promising, so I may make decisions that do not necessarily optimize for SOTA paid models.
• Dot also borrows ideas from Amp, Claude Code, and other coding agents.

LICENCE

MIT