pi-model-pin

Keeps the model you pick with /model across /new sessions in the same pi process, but starts at the default model in a new pi process.

Packages

Package details

extension

Install pi-model-pin from npm and Pi will load the resources declared by the package manifest.

npm repohome report
$ pi install npm:pi-model-pin
Package
pi-model-pin
Version
1.0.1
Published
Nov 4, 2026
Downloads
530/mo · 530/wk
Author
devmolchy
License
MIT
Types
extension
Size
11 KB
Dependencies
0 dependencies · 1 peer
Pi manifest JSON
{
  "extensions": [
    "./index.ts"
  ]
}

Security note

Pi packages can execute code and influence agent behavior. Review the source before installing third-party packages.

README

pi-model-pin

License: MIT npm version

A pi coding agent extension that keeps the model you pick with /model across /new sessions within the same running pi process, while a new pi process (like a new terminal tab) always starts on the configured default model — until you pick a different one.

terminal A                                   terminal B (new process)
┌─────────────────────────────────┐          ┌─────────────────────────────┐
│ pi                              │          │ pi                          │
│ /model PROVIDER/MODEL           │          │   (starts on configured      │
│ /new      ← still on that model │          │    default model, as usual)  │
│ /new      ← still on that model │          └─────────────────────────────┘
└─────────────────────────────────┘

Requirements

Install

From npm (recommended)

Install the published package with pi install:

pi install npm:pi-model-pin

This installs the package into pi's package directory (personal install) and activates its extension. Updates are applied with pi update --extensions.

From git

Prefer the npm package, but you can also install directly from this repository:

pi install git:github.com/DevMolchy/pi-model-pin

A git source is cloned and kept in sync with the tracked version; updates are applied on the next start or with pi update --extensions.

Local development

Copy or symlink index.ts into pi's auto-discovery folder:

mkdir -p ~/.pi/agent/extensions
ln -s "$(pwd)/index.ts" ~/.pi/agent/extensions/pi-model-pin.ts

To disable (without uninstalling), remove the symlink. Any edit is picked up by /reload.

Wherever the file lives, make sure you edit the copy in this repository and keep the link pointing here.

Usage

Action Result
pi (new terminal) configured default model
/model <provider>/<model> switch to that model (becomes "pinned")
/new new session keeps the pinned model
Ctrl+P cycling last non-default model also gets pinned
/model <default model> back on the default → pin cleared
/pin-status shows Pinned: <model> or No model pinned
/unpin drop the pinned model → next /new uses the default

The footer shows a Pinned model indicator while a non-default model is pinned, and is blank otherwise.

Development

npm install        # fetch dev dependencies (type checking + test harness)
npm test           # run the tests
npm run typecheck  # type-check index.ts with tsc

CI (npm ci && npm run typecheck && npm test) runs on every push with Node 20, 22 and 24.

License

MIT © DevMolchy