pi-anthropic-text-editor

Anthropic native text editor extension for the pi coding agent.

This package is the standalone extraction of senpi's former builtin anthropic-text-editor extension.

Behavior

When PI_ANTHROPIC_TEXT_EDITOR is enabled and API is anthropic-messages, the extension:

1. Registers a function tool named str_replace_based_edit_tool with commands:
   • view
   • create
   • str_replace
   • insert
2. Rewrites outgoing Anthropic tool payloads to ensure native text_editor_20250728 is present.
3. Strips function-shape str_replace_based_edit_tool, read, write, and edit tools from Anthropic payloads.
4. Appends a system-prompt section that instructs the model to use native text editor operations.

Case	Result
PI_ANTHROPIC_TEXT_EDITOR enabled, API anthropic-messages, no native tool present	injects { type: "text_editor_20250728", name: "str_replace_based_edit_tool" }
Native text_editor_* tool already present	preserves caller-provided native tool, no duplication
Function-shape str_replace_based_edit_tool / read / write / edit present	strips function shapes from outgoing Anthropic payload
Env unset or disabled	no-op
API is non-Anthropic	no-op

Truthy values for PI_ANTHROPIC_TEXT_EDITOR: 1, true, yes, on (case-insensitive; surrounding whitespace allowed).

Installation

# From npm (once published)
pi install npm:pi-anthropic-text-editor

# From git
pi install git:github.com/code-yeongyu/pi-anthropic-text-editor

# Manual placement
git clone https://github.com/code-yeongyu/pi-anthropic-text-editor ~/.pi/agent/extensions/pi-anthropic-text-editor
cd ~/.pi/agent/extensions/pi-anthropic-text-editor && npm install

# Dev / one-shot test
pi -e /path/to/pi-anthropic-text-editor/src/index.ts

Development

npm install
npm test
npm run typecheck
npm run check

Origin

Ported from packages/coding-agent/src/core/extensions/builtin/anthropic-text-editor/index.ts in code-yeongyu/senpi-mono.

License

MIT.

Related

• senpi — the fork/runtime these extensions are extracted from.
• Ultraworkers Discord — community link from the senpi README.
• Dori — the product powered by senpi under the hood.