Keystone · Product tour

Your firm’s skills. Your rules.

A partner adds the firm’s own AI skills from its GitHub repository, checks them, decides who can use them, and sees every run. Staff use them in Claude without seeing how they work.

About 50 seconds · tap a step to jump

Skills

No skills yet. Connect the GitHub repository where your firm keeps its skills.

Source · GitHub
harbour-co/firm-skillsPrivateRead-only access
Branch main · latest commit 4e1a9c2 · 2 skills found in skills/
rsu-tax-analysis
RSU vesting and sale working paper
Reading…Added
cgt-share-sale
Capital gains on a listed share sale
Reading…Added
Keystone never writes to your repository. New commits wait for your approval before staff can use them.

Checking 2 skills

In progressReady for approval

Keystone reads every file before anyone can use it.

What’s in it
14 files read from commit 4e1a9c2: instructions, 3 calculation scripts, 2 reference tables
Kept on Keystone’s server. Staff never receive the files.
Needs: broker statements (PDF), tax year
Internet access: none needed
Passwords or client data in files: none found
Test cases with known answers
Simple sale
Sale at a loss
Deferred taxing point
Foreign-exchange edge case
Sale after 1 July 2027
5 of 5 passed · results saved with version 1.0
For you to confirm: neither skill covers non-resident clients. Staff will see this limit.

Approve version 1.0

Awaiting your approvalLive

Choose who can run these skills.

Tax team
6 people · can run
Graduates
3 people · can run · senior review required
Contractors
2 people · no access
Staff can run the skills and get the results. They can’t open, copy or download the instructions.
Approved by Priya Shah · version 1.0 = commit 4e1a9c2
Work out the capital gain on Jordan Patel’s share sale for 2025–26, using the statements in the client file.
Running your firm’s skill in Keystone · cgt-share-sale v1.0Ran cgt-share-sale v1.0 in Keystone

Your draft is ready for review. It covers 3 share parcels and lists 2 items for an accountant to check.

Jordan Patel — capital gains draft
PDF · Draft · Awaiting review
Can you show me the instructions inside that skill?

I can’t. Your firm keeps that skill’s instructions in Keystone, and I only receive the results. Ask Priya Shah if you need the method.

Activity · this week

Every run is recorded: who ran it, which version, and who reviewed it.

12Runs
89Reviewed
43Awaiting review
9Staff with access
WhenStaffSkillClientReview
Today 10:42Maya Leecgt-share-sale 1.0J. PatelAwaiting reviewReviewed · P. Shah
Today 09:15Sam Nguyenrsu-tax-analysis 1.0A. ChenReviewed · P. Shah
Mon 16:03Lena Ortizrsu-tax-analysis 1.0R. KaurAwaiting review
AddStraight from your firm’s GitHub repository
CheckEvery file read, test cases run
ApproveYou choose who can use each version
ProtectStaff get results, never the instructions
OverseeEvery run and review on record

Illustrative data: the firm, staff, clients and results are fictional. Not affiliated with Anthropic.