We've been experimenting with various skills and MCPs in our day-to-day Ruby development at Poll Everywhere. This is the internal skill that's been most useful for preserving the context window while letting agents explore Ruby code.
It's a CLI wrapper around Ruby's Prism gem that lets the agent do this:
$ prism -o app/models/user.rb
User < ApplicationRecord [1-75]
includes Agreeable
includes Auditable
has_many :polls
has_many :questions, through: :polls
has_many :votes
has_many :reports, dependent: :destroy
#audit_create [41-43]
#allowed_to_participate_in?(poll) [45-66]
#restricted_from_participation_in?(poll) [68-70]
#recently_created? [72-74]
$ prism -m 'recently_created?' app/models/user.rb
=== METHOD: recently_created? ===
Lines 72-74:
def recently_created?
created_at.after?(5.minutes.ago)
end
The idea is to give the agent a token-efficient way to understand what's going on in Ruby code.
