Skip to main content
  • Streaming chat real-time streaming responses powered by AI SDK v6
  • Multiple providers Fireworks AI, xAI (Grok), and Anthropic with fully editable model lists per-provider
  • Extended thinking collapsible reasoning blocks shown inline when the model supports it; thinking level configurable (off → xhigh)
  • Tool use AI can read files, write files, create files, list directories, and search code directly in your project
  • Message queue send up to 3 follow-up messages while the AI is still working; they execute in order when the current response finishes
  • Editor selection context Cmd+C in the editor snapshots the selected lines, file path, and line numbers as context attached to your next chat message
  • Voice dictation mic button in the chat input records your voice and transcribes it to text via OpenAI, Fireworks, or OpenRouter’s Whisper models; off by default (enable in Settings → Speech Input, needs an API key for the chosen provider)
  • Math formulas in chat write $...$/$$...$$ LaTeX and it renders as typeset math via KaTeX (see Math Formulas)
  • Code completion inline ghost-text completion with a separate model (Fireworks AI); press Tab to accept
  • Auto-open toggles status-bar toggles to auto-open files or diffs when the AI writes them; the two modes are mutually exclusive to avoid tab overload on scaffold projects
  • Live editor streaming file writes stream into open editor tabs in real time as the AI types, with a green scanner overlay effect
  • Auto-follow scroll editor scrolls to follow AI output as it streams in
  • Active file context the file open in the editor is automatically included as context in every chat message
  • Context window meter live token usage bar in the status bar; color shifts yellow → red as you approach the limit; updates every round including intermediate tool-call rounds
  • Context compression compress button strips tool call payloads (file contents, code blobs) from older turns to cut token burn without losing conversation context
  • Auto-compress automatically compresses when context exceeds 80% of the model’s safe window
  • Chat history per-project conversation sessions with a searchable history modal; sessions persist across restarts
  • Prompt system three-tier prompt management: base system prompt, editable harness (~/.coder/harness.md), and custom prompts (~/.coder/prompts/) selectable per-session; prompts reload live without restart
  • Project memory AI can read and write Markdown files in .coder/memory/ (sandboxed, no path traversal); memory persists across sessions and models so context accumulates over time
  • External tool sync new files created by external AI tools (Claude Code, aider, etc.) auto-open in the editor when you’re not in a terminal tab
  • Skills progressive-disclosure instructions the agent loads on demand, see Skills

​
Prompt System

Prompts are stored in ~/.coder/: