senpi

⚠️ Experimental. senpi is an opinionated, in-flight fork of badlogic/pi-mono. It powers Dori under the hood and reflects what one specific AI assistant needs from a coding-agent runtime. Use it; don't bet a production pipeline on it.

senpi is a senpai-name pun and a more sane pi with extra batteries included — a TypeScript monorepo that rebrands pi-mono's coding agent as senpi and ships a curated set of builtin extensions and core tweaks on top of upstream.

Upstream: pi-mono by @mariozechner — tools for building AI agents and managing LLM deployments.

Inspired by OMO, built as Dori's coding-agent runtime

senpi was born from two influences:

• Strong influence from OMO (oh-my-openagent). OMO is the heavyweight opencode harness with discipline agents (Sisyphus, Hephaestus, Prometheus), IntentGate, hash-anchored edits, Team Mode, skill-embedded MCPs, Ralph Loop, todo enforcers, and a lot more. senpi reuses many of OMO's signature ideas (intent gate, dynamic prompt, per-model presets, parallel-tool routing, todo continuation) but keeps the surface as light as possible so it can stay close to upstream pi-mono. Think of senpi as a light version of OMO that runs as a single pi CLI binary instead of an opencode plugin.
• senpi is the coding-agent runtime for Dori. Dori is Sisyphus Labs' AI assistant — see the Dori callout in OMO's README for context. senpi is usable standalone, but the design decisions (intent gate phrasing, builtin extension set, prompt presets per model family, branding) are tuned for what Dori needs when it executes code work.

Core source modifications are minimised and tracked in changes.md files alongside every modified subdirectory so upstream rebases stay clean.

Coming from OMO? Recommended extension setup

If you're migrating from OMO (oh-my-openagent), here is the practical map from "what I used in OMO" to "what to install in senpi". A lot of OMO's signature work is already wired into senpi as a builtin (nothing to install); the rest lives in the code-yeongyu/pi-* GitHub repos and is one senpi install away.

senpi is intentionally lighter than OMO — single CLI binary, not an opencode plugin. Some OMO concepts (Discipline Agents, Team Mode, Skills, Hashline, Ralph Loop, /init-deep) have no 1:1 senpi counterpart and are flagged at the bottom of this section. If you need those, keep using OMO.

Already builtin in senpi — nothing to install

Install these pi-extension packages for the OMO-shaped senpi

senpi install git:github.com/code-yeongyu/pi-lsp-client            # 🛠️  LSP: rename / goto / refs / diagnostics + /lsp inspector
senpi install git:github.com/code-yeongyu/pi-ast-grep              # 🛠️  AST-Grep across 25 languages (auto-downloads sg)
senpi install git:github.com/code-yeongyu/pi-comment-checker       # 💬  Comment Checker — the standalone pi port of OMO's hook
senpi install git:github.com/code-yeongyu/pi-rules                 #     Context injection: .claude/rules, .cursor/rules, .github/instructions, AGENTS.md, CLAUDE.md
senpi install git:github.com/code-yeongyu/pi-nested-agents-md      # 🔍  Auto-injects nearby AGENTS.md (the runtime half of /init-deep)
senpi install git:github.com/code-yeongyu/pi-websearch             # 📚  Provider-backed web search (fills the Exa-style slot)
senpi install git:github.com/code-yeongyu/pi-webfetch              #     web_fetch tool (markdown / text / HTML, bounded time + size)
senpi install git:github.com/code-yeongyu/pi-goal                  #     Persistent goal tracking + continuation prompts (closest thing to Sisyphus discipline)

# Optional — only if you used the matching OMO surface:
senpi install git:github.com/code-yeongyu/pi-cua-integration                 # 🖥️  Computer-use bindings (desktop / browser)
senpi install git:github.com/code-yeongyu/pi-anthropic-computer-use          #     Claude-native computer use
senpi install git:github.com/code-yeongyu/pi-anthropic-code-execution        #     Claude-native code execution
senpi install git:github.com/code-yeongyu/pi-google-code-execution           #     Google-native code execution
senpi install git:github.com/code-yeongyu/pi-openai-code-interpreter         #     OpenAI Code Interpreter
senpi install git:github.com/code-yeongyu/pi-anthropic-text-editor           #     Claude-native text editor tool
senpi install git:github.com/code-yeongyu/pi-anthropic-tool-search           #     Claude-native tool search
senpi install git:github.com/code-yeongyu/pi-anthropic-web-fetch             #     Claude-native web fetch
senpi install git:github.com/code-yeongyu/pi-google-google-search            #     Google Search grounding
senpi install git:github.com/code-yeongyu/pi-google-url-context              #     Google URL grounding
senpi install git:github.com/code-yeongyu/pi-openai-api-parallel-tool-calls  #     OpenAI parallel_tool_calls payload support

Each package is also installable by git URL, e.g. senpi install git:github.com/code-yeongyu/pi-comment-checker. See Senpi Packages for the full install / update / remove flow.

Allow all permissions (OMO-style)

OMO runs with all tool permissions pre-approved. To replicate that behavior in senpi, add a wildcard allow rule to your global settings:

mkdir -p ~/.senpi/agent
cat > ~/.senpi/agent/settings.json << 'EOF'
{
  "permission": {
    "*": "allow"
  }
}
EOF

This tells the permission system to auto-approve every tool call without prompting. The "*" key matches all permission names, and "allow" grants them unconditionally. You can also set this per-project by placing the same settings.json in .senpi/settings.json at the project root.

Note: This disables all interactive permission prompts. Only do this if you trust the model and the workspace you are running in.

No direct senpi counterpart

These are part of OMO's opencode harness shape and are intentionally not in senpi:

• Discipline Agents (Sisyphus / Hephaestus / Oracle / Librarian / Explore / Multimodal Looker) and the ultrawork / ulw one-word orchestration entrypoint.
• Team Mode — lead + up to 8 parallel members, tmux visualization, team_* tool family, hyperplan / security-research skills riding on top.
• Hashline / hash-anchored edit tool — senpi stays with pi's standard edit / multiedit / apply_patch. pi-comment-checker covers the post-edit validation slot OMO uses Hashline for, just without LINE#ID content-hash identifiers.
• Skill system and skill-embedded MCPs — skills as a first-class concept (SKILL.md, scoped per-skill MCP servers) do not exist in senpi.
• Prometheus interview-mode planner and the Ralph Loop / /ulw-loop self-referential loop.
• /init-deep — there is no in-tree generator. Generate the hierarchical AGENTS.md tree manually (or with a normal agent prompt), then install pi-nested-agents-md so the agent actually reads them.
• Built-in doctor command, Claude Code hook/command/skill/plugin compatibility layer, and the agent category router (visual-engineering / deep / quick / ultrabrain).

Want more? Try the pi-extensions ecosystem

senpi ships a fixed set of builtin extensions and stops there. The code-yeongyu/pi-* GitHub repos contain the full extension ecosystem: some packages are vendored into senpi as builtins, while the re