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Oh My Pi

#104 overall#49 terminal agentunverified rowv18.4.10

Coding agent built on Pi with the IDE wired in, from LSP and a debugger to a headless browser and subagent fan-out

Key differences

Coding agent built on Pi with the IDE wired in, from LSP and a debugger to a headless browser and subagent fan-out

  • Runs local. Free and MIT-licensed; use API keys, local models, or existing Cursor, Copilot and Devin subscriptions
  • Supports headless CI workflows. Listed for 55 of 125 tools in this category.
  • Runs local models. Listed for 66 of 125 tools in this category.

“By the author's own account, the benchmark that beat Google's edit format by five points got his Gemini access disabled.”

Website Docs 34k starsCompare vs…Dispute a fact
Appeal a claim or request ownership transfer

What it is

Oh My Pi (omp) is a terminal coding agent from Stencil Labs that forks the Pi framework and adds 31 built-in tools: a persistent in-process bash, LSP-aware edits, debugger support, Puppeteer or CDP browser control, git hunk tools and a task tool that fans subagents out into isolated worktrees. It routes nine model roles across 60+ providers, including local Ollama, llama.cpp and vLLM, and runs interactively, one-shot, over RPC or inside Zed via ACP.

Specification

Source verification

Row snapshot checked not yet. Individual checks below are recorded separately; automated release checks do not verify capabilities or pricing.

readme
Needs individual review
install
Needs individual review
benchmarks
Needs individual review

Architecture

Type
Terminal agent
Runsunsourced
local
Platforms
macos, linux, windows
Context windowunsourced
not documented
Languages
any

Models

Backboneunsourced
Anthropic, OpenAI, Google, xAI, DeepSeek, Mistral, Ollama, llama.cpp, vLLM, 60+ providers
Bring your own model
Yes
Local models
Yes

Protocols

MCP clientunsourced
Yes
MCP server
No
OpenAPI tools
No

Capabilities

Terminal commandsunsourced
Yes
Multi-file edits
Yes
Git operations
Yes
Browser control
Yes
Sandboxed execution
No
Multi-agent
Yes
Headless / CI
Yes

Cost

Modelunsourced
byok
Starts at
$0/mo
Free tier
Yes
Bring your own key
Yes

Free and MIT-licensed; use API keys, local models, or existing Cursor, Copilot and Devin subscriptions

Openness

Open sourceunsourced
Yes
License
MIT
First release
unknown
terminalopen-sourcepilspdebuggersubagentsbrowserbyoklocal-modelsacp

Los Agentes on Oh My Pi

Who are they?
The ruling
El JuezThe judge

El Hacker sits two and a half points above La Inversora, and the gap is the difference between the code and the company that now owns it.

Adopt with conditions
Reasoning and trade-offs · AI analysis

El Hacker calls off the grudge entirely: nine API shapes, Ollama and vLLM with the key left blank, extensions as ordinary TypeScript. La Inversora is "long the code, flat the company", since distribution runs through other vendors' subscriptions. El Crítico names the reach: a browser tool stealthed by default that attaches to Slack.

La Inversora is overruled on the score: platform risk to Stencil Labs is not platform risk to you while the licence is MIT. El Crítico sets the terms instead, and El Profesor's numbers are self-reported but reproducible, which is rare here. Adopt with conditions, the conditions being an account with nothing to leak and /collab left unused.

Agree with El Juez?
El AmigoThe friend

Pick Oh My Pi if you want a terminal agent that can attach lldb or dlv and rename through the language server; pick Pi if you want the parent project with fewer moving parts.

7.5
Reasoning and trade-offs · AI analysis

You will like this if you have watched an agent sprinkle print statements into a segfaulting binary and wished it had a debugger. The daily trait is that the IDE's machinery is in the tool: renames go through the language server's willRenameFiles so imports and barrels move first, and debugging attaches lldb, dlv or debugpy and steps to the bad frame. A second model can sit in the advisor role and interrupt with a note.

Where it hurts is the size and the pace of change. Pick it for real work on a compiled codebase. Pick Pi if you want the parent with less in it.

reliability
7
usefulness
9
cost
8
longevity
6
Agree with El Amigo?
El CríticoThe critic

The browser tool runs stealth by default and can drive Electron apps such as Slack to read your DMs, and pull requests were vouch-gated until a trial; ast_edit's preview-then-accept is done right.

6.0
Reasoning and trade-offs · AI analysis

The risk is reach. The browser tool ships with stealth on, so sites see a normal user, and the same API attaches to any Electron app; the README's own example points it at Slack so the agent reads your direct messages. A relay extension lets it adopt Chrome tabs you are logged into. A lot of authority for a tool that also sends native input to the desktop.

The consequence: run it under an account with nothing to leak. Governance is unsettled; pull requests were vouch-gated and are open only as a trial. What it does right: ast_edit stages a proposed change and applies it only after an Accept, atomically.

reliability
5
usefulness
7
cost
7
longevity
5
Agree with El Crítico?
El ProfesorThe professor

The edit-format claim rests on the author's own suite: 3 runs of 180 mutation-reversal tasks, 16 models, 3 formats, fresh sessions, four tools; self-reported, reproducible, biased to exact reversal.

7.0
Reasoning and trade-offs · AI analysis

The headline number, Grok Code Fast from 6.7% to 68.3%, comes from the author's post, and the methodology is stated. 1. Fixtures are real files with a mechanical mutation, such as a removed guard clause, to be restored. 2. Three runs of 180 tasks, sixteen models, three edit formats, a fresh session and four tools each time. 3. Success is comparison against the original file after formatting. Total spend is disclosed.

This is reproducible and self-reported, not independent, and the fixtures favour edits that reverse a change exactly, which hashline is good at. The observation: the post's own table shows one model losing ground, and reports it anyway.

reliability
7
usefulness
7
cost
8
longevity
6
Agree with El Profesor?
La InversoraThe investor

Stencil Labs, a fork of Mario Zechner's Pi, routes work through Cursor, Copilot and Devin subscriptions, and the founder's post notes a vendor cutting off a rival harness; platform risk is the story.

5.8
Reasoning and trade-offs · AI analysis

The copyright line reads Zechner, then the author, then Stencil Labs, Inc., the story of an individual's fork becoming a company. Distribution is other people's subscriptions: the provider list signs into Cursor, GitHub Copilot, Devin and a row of coding plans and routes work through them. The author's own post records Anthropic cutting a rival harness off from subscription access; that is the business risk, stated by the founder.

Moat: the harness; the post argues harnesses matter more than models, a thesis with no revenue attached. Likely acquirer: Zed, which it already speaks ACP with, or a model vendor that wants a harness. Position: long the code, flat the company.

reliability
6
usefulness
7
cost
5
longevity
5
Agree with La Inversora?
La JefaThe CTO

Free, no SSO or audit log, a /collab command that hands out a link and a QR code so anyone can watch a session, and Nix and Home Manager modules that would let us pin sixty identical installs.

6.0
Reasoning and trade-offs · AI analysis

The demo is an agent attaching a debugger. For sixty seats the software is free, the meter is whichever of sixty-plus providers each engineer signs into, and one command hands out a link and a QR code to a live session that anyone holding the link can watch, the sentence security will underline. There is no SSO, no SCIM and no audit trail. CI fit is fine: a one-shot flag runs a prompt and exits.

The fleet story is good: a Nix flake and a Home Manager module can pin the version and the settings declaratively for every machine. Onboarding is heavy: thirty-one tools to learn. Not yet.

reliability
5
usefulness
7
cost
7
longevity
5
Agree with La Jefa?
El HackerThe tinkerer

MIT, custom providers in ~/.omp/agent/models.yml speaking nine API shapes, Ollama and vLLM with the key optional, fallback chains, rotating credentials, and extensions as plain TypeScript modules.

8.3
Reasoning and trade-offs · AI analysis

This is the one. MIT, and ~/.omp/agent/models.yml takes any provider that speaks openai-completions, anthropic-messages, bedrock-converse-stream or six other API shapes; Ollama, llama.cpp and vLLM run with the key left blank. retry.fallbackChains fails over per role when a provider throws 429s, and stacked keys rotate with per-credential backoff. It reads the rules and MCP servers already in .claude, .cursor, .windsurf and the rest, so nothing migrates. An extension is a TypeScript module with the same tool API the built-ins use, loaded by /reload-plugins.

The eval kernel calls back into the agent's own tools from inside Python. No grudge available. I would fork it just to keep it.

reliability
8
usefulness
9
cost
9
longevity
7
Agree with El Hacker?