Created and extended greet tool extensionPublic

Agent

Model

Claude Opus 4.5 (latest)

Started

Jan 20, 11:25 PM

Messages60

Downloads0

Summary

In Progress

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Created greet tool extension returning 'hi'.
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Used greet tool and confirmed output.
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Added custom tool call and result renderer with /reads command.
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i want you to create an extension .pi/extensions, called greet.ts. it should have a custom tool "greet" that just returns hi when called.

Created .pi/extensions/greet.ts with a greet tool that returns "hi" when called. The tool takes no parameters and will be auto-discovered when you run pi.

ok, use the tool

Done. The greet tool returned "hi".

ok, add a custom tool call and result renderer, just think about something simple

Updated the extension with custom renderers:

renderCall: Shows "👋 Greeting..." while the tool is being called
renderResult: Shows "✓ hi!" with styled colors when complete

use the tool agian

Done. You should see the custom rendering with the 👋 and ✓ styled output.

add a /reads slash command, that goes through the active branch entries, and finds all assistant messages and the tool calls in them. and list the read files read via the read tool. you can find the types in @packages/ai/src/types.ts

Now I have the info I need. Let me update the extension:

Added the /reads command. It:

Gets the active branch entries via ctx.sessionManager.getBranch()
Finds assistant messages and extracts tool calls named "read"
Collects unique file paths and displays them

Try it with /reads to see all files read in this session.