Stop running your business in your inbox.

Freelance OS is 14 production-grade skills that turn Claude into your back office: proposals, scopes, invoices, a real CRM, contract review, and rate math — all sharing one data folder that becomes your business’s memory.

Get Freelance OS — $39 Try 2 skills free
30-day refund, no questions. Plain markdown — your data stays in your files.
$ claude
> use proposal-writer: new lead, 5-page site, ~$4k, 4 weeks
✓ proposal drafted — 3 options ($3.8k / $5.4k / $8.9k)
✓ saved to clients/acme/ · follow-up scheduled day 4
> invoice milestone 1
✓ INV-2026-014 · $2,700 · due Aug 21 · ledger updated

Two free tools, no signup

Both run entirely in your browser. Nothing is uploaded, nothing is stored, and neither asks for an email.

Rate calculator →

Your true floor rate from real costs, taxes, and the billable hours you actually have. The standard salary ÷ 2080 formula understates it by roughly 3x.

Contract red-flag checker →

Paste a client contract and get the ten clauses that cost freelancers money — IP transferring before payment, unlimited revisions, uncapped liability — each with wording you can send back.

14 skills, one back office

For designers, developers, writers, and consultants. Every skill reads your rates, terms, and client history from the same folder — so each proposal, invoice, and follow-up already knows your business.

proposal-writer

Rough notes → client-ready proposal with three-option pricing.

scope-of-work

SOWs that name the 5–8 requests this client will make and price them out front.

invoice-generator

Sequential invoices tied to SOW milestones, plus a ledger tracking who owes you.

client-crm

A plain-markdown CRM every other skill reads and keeps current.

rate-calculator

Your floor rate from real costs — taxes, a 46-week year, a 55% billable ratio.

contract-checklist

Ten red flags, including IP that transfers on creation instead of on payment.

…plus client-onboarding, weekly-status-report, meeting-to-actions, follow-up-writer, cold-outreach, case-study-writer, testimonial-collector, project-postmortem.

Get it on Gumroad →Or try 2 free

“Couldn’t I just ask Claude to do this?”

Yes. That’s the honest answer, and it’s worth taking seriously before you spend anything.

What you’d actually be rebuilding

Not prompts — a system. Fourteen skills sharing a file layout, so invoice-generator reads the payment schedule scope-of-work wrote, and project-postmortem feeds your realized hourly rate back into rate-calculator before you quote the next job. Getting that wiring right, then finding the edges — what belongs in an SOW so scope creep stays a friendly conversation, when to send the takeaway-close email, why IP should transfer on payment and not on creation — is the work. The typing was never the hard part.

So try it before you buy it

The free starter is two complete skills, not a teaser. Run rate-calculator against your real numbers. If it doesn’t tell you something about your pricing you didn’t already know, ignore the rest of this page — you genuinely don’t need it.

Try 2 skills free →