oh-my-pi (omp)

oh-my-pi (omp) is a terminal-first coding agent forked from Mario Zechner's Pi. It runs as an interactive TUI, a one-shot CLI, an RPC server, or an ACP plugin inside editors like Zed. The agent reads your codebase, edits files, runs shell commands, and talks to debuggers — all without leaving the terminal.

Top features

• In-process tool surface: ripgrep, glob, find, bash, and AST operations are linked into the same binary. No fork-exec overhead, no missing system dependencies on Windows.
• LSP wired into every write: rename, refactor, and import updates go through workspace/willRenameFiles before the file moves. The agent sees what your IDE sees.
• Real debugger integration: attach lldb, dlv, or debugpy to a running process, step through frames, and inspect state — not just print debugging.
• Hashline edits: the model anchors changes by content hash instead of retyping lines. Fewer tokens, no stale-file corruption, and Grok 4 Fast reportedly cuts output tokens by 61% on the same tasks.
• First-class subagents: fan out work across isolated worktrees with typed, schema-validated results. No merge conflicts between sibling workers.
• Time-traveling stream rules: regex matches can abort the stream mid-token, inject a correction, and retry from the same point without paying context tax on every turn.
• Hindsight memory: the agent writes facts mid-run with retain, pulls them back with recall, and compresses each session into a project-scoped mental model that loads on the first turn of the next session.
• Code review with verdicts: /review spawns dedicated reviewer subagents that return a clear ship/hold verdict, with issues ranked P0–P3 and scored for confidence.
• Browser and Electron automation: drives a real browser with stealth on by default, or points the same API at any Electron app.
• 40+ model providers: Anthropic, OpenAI, Google, Grok, Cursor, Ollama, and others, with role-based routing, fallback chains, and path-scoped model assignments.
• Native rule ingestion: reads Cursor MDC, Cline .clinerules, Codex AGENTS.md, Copilot applyTo, and similar formats without conversion scripts.
• Git-aware commits: omp commit splits unrelated changes into atomic commits ordered by dependency, with cycles rejected before anything is written.

Use cases

• Refactoring large codebases: rename symbols across re-exports and barrel files with LSP-aware updates.
• Debugging production crashes: attach a debugger to a live process, walk stack frames, and evaluate expressions without restarting.
• Parallel code review: run /review on a branch or uncommitted changes to get ranked issues before opening a pull request.
• Research-heavy coding: search the web, read arXiv PDFs, and cite sources inline while editing code in the same session.
• Cross-platform terminal workflows: the same binary runs on macOS, Linux, and Windows without WSL, with persistent shell sessions and PTY support for interactive prompts.
• Editor integration: run inside Zed via ACP to read the active buffer, write through the editor's save path, and spawn shells in the editor's terminal.