firehorse

firehorse

Firehorse is a one-install agent skills distribution plus a small cross-provider foundation library.

In plain language: it collects the agent skills, subagents, web tools, code navigation tools, and setup glue that I want available in every serious coding agent session, then packages them so they work in both Pi.dev and Claude Code.

It exists because useful agent workflows are currently fragmented: some skills live in Claude plugin format, some tools are Pi extensions, some capabilities come from MCP, and some projects need orchestration context from Superset or other shells. Users should not have to install, wire, and audit each piece manually.

Firehorse gives that surface a reviewed, versioned home.

Recommended way to use it

Firehorse is designed to support Pi.dev and Claude Code equally well. The recommended daily driver is:

Pi.dev + Codex model + firehorse-pi

Why this is the recommended path:

• Pi packages can bundle extensions, skills, prompts, themes, and direct tools in one install.
• Codex is a strong default coding model for the Pi workflow.
• Pi gives Firehorse the richest runtime surface today: subagents, MCP adapter, web access, LSP/code intelligence, context-saving tools, and TUI diagram rendering.

Claude Code remains first-class: the same selected upstream skills and shared subagent roles are mirrored into a Claude plugin. Claude just cannot consume Pi extensions directly, so the Pi distribution is the more complete driver today.

Install

Pi.dev

pi install npm:firehorse-pi

Or install this repository directly:

pi install git:github.com/cinjoff/firehorse

Then run:

/skill:firehorse-setup

Claude Code

/plugin marketplace add cinjoff/firehorse
/plugin install firehorse@firehorse

TypeScript core library

pnpm add firehorse

The core library is for adapter contracts and future integrations. It is not a skill runtime yet.

What ships in v0.1.0

• firehorse — TypeScript core library for provider/orchestrator contracts and pinned upstream provenance.
• firehorse-pi — Pi.dev package that bundles selected upstream Pi packages and Firehorse skills. This is the recommended user install.
• firehorse-claude — Claude Code plugin with mirrored skills and agents.

Firehorse v0.1.0 is intentionally a foundation release. It does not include a Firehorse-authored skill runtime, prompt loader, slash-command runtime, or provider API transport yet.

How it is wired

                                 ┌───────────────────────┐
                                 │   upstream sources    │
                                 │ skills, agents, tools │
                                 └───────────┬───────────┘
                                             │ reviewed + pinned
                                             ▼
┌─────────────────────────────────────────────────────────────────────────┐
│                              firehorse                                  │
│                                                                         │
│  ┌───────────────────────┐       mirrors / manifests       ┌─────────┐ │
│  │ firehorse-core        │────────────────────────────────▶│ Claude  │ │
│  │                       │                                  │ plugin  │ │
│  │ provider contracts:   │                                  └─────────┘ │
│  │  Claude / Codex / Pi  │                                      ▲       │
│  │                       │                                      │       │
│  │ orchestrators:        │                                  install     │
│  │  Superset / tmux /    │                                      │       │
│  │  Conductor / terminal │                                      │       │
│  └───────────┬───────────┘                                      │       │
│              │                                                   │       │
│              │ curated Pi allow-list                             │       │
│              ▼                                                   │       │
│  ┌───────────────────────┐       recommended driver              │       │
│  │ firehorse-pi          │───────────────────────────────────────┘       │
│  │                       │                                               │
│  │ Pi extensions         │  context-mode, pi-lens, pi-mcp-adapter,       │
│  │ Pi skills             │  pi-mermaid, pi-subagents, pi-web-access,     │
│  │ prompts + themes      │  mattpocock/skills, impeccable                │
│  └───────────────────────┘                                               │
└─────────────────────────────────────────────────────────────────────────┘

The important design choice: bundling is not the same as exposing. firehorse-pi may bundle an upstream package for runtime support, but the Pi manifest explicitly allow-lists what users see.

Upstream packages and skills