Pi Coding Agent

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Pi is a minimal, highly customizable terminal-based coding harness and agent designed to adapt seamlessly to existing developer workflows. Unlike rigid, sealed products that enforce specific methodologies, Pi acts as an extensible framework where users can build or install commands, tools, providers, or custom UI tweaks on the fly. It ships with powerful default features but intentionally skips heavy, pre-baked abstractions like sub-agents, permission gates, background bash execution, or built-in plan modes. Instead, developers can easily extend Pi using TypeScript-based packages shared via npm or git, allowing it to act as a truly tailored terminal companion that can even be scripted, run in RPC mode, or embedded into third-party applications via an SDK.
Minimal, deeply customizable terminal coding agent harness.
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pi.dev/
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What is Pi Coding Agent?

Minimal, deeply customizable terminal coding agent harness.

Pi is a minimal, highly customizable terminal-based coding harness and agent designed to adapt seamlessly to existing developer workflows. Unlike rigid, sealed products that enforce specific methodologies, Pi acts as an extensible framework where users can build or install commands, tools, providers, or custom UI tweaks on the fly. It ships with powerful default features but intentionally skips heavy, pre-baked abstractions like sub-agents, permission gates, background bash execution, or built-in plan modes. Instead, developers can easily extend Pi using TypeScript-based packages shared via npm or git, allowing it to act as a truly tailored terminal companion that can even be scripted, run in RPC mode, or embedded into third-party applications via an SDK.

Core Features
Minimal terminal-based coding harness that adapts to workflows
To be verified.
Deep extensibility via TypeScript modules, extensions, skills, and templates
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Support for 15+ AI providers and hundreds of models with mid-session switching
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Tree-structured shareable history allowing developers to branch and navigate previous sessions
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Advanced context engineering including auto-summarization and per-project system instructions
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Four operational modes: Interactive (TUI), Print/JSON, RPC, and SDK integration
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Popular Use Cases
  • Generate shell scripts and command-line automations in print mode
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  • Create highly customized development workflows by hot-reloading extensions on the fly
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  • Navigate complex project histories by branching out from any previous point in a session tree
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  • Inject custom workspace instructions, skills, and prompt templates dynamically to save context window space
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Feature Comparison
A functional comparison based on maker input.
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Comparison details are provided for informational purposes and should be verified with the official website.
How to use
  • To use Pi
  • install it via the terminal using curl
  • PowerShell
  • npm
  • pnpm
  • or bun (for example
  • run `npm install -g --ignore-scripts @earendil-works/pi-coding-agent`). Once installed
  • developers can start an interactive TUI session
  • run it in print mode using `pi -p "query"` for shell scripting
  • or switch models mid-session using `/model` or `Ctrl+L`. Users can customize its functionality by editing configurations like `models.json` or installing extensions directly using commands like `pi install npm:@foo/pi-tools`.
Pricing
Pi Coding Agent uses a freemium pricing model. Pricing and features may change over time.
Free
$0
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Pro
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Team
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Enterprise
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Frequently Asked Questions

Verification
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Source
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Related Tags
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