How do I save a document from Claude or ChatGPT to KarSafe?

After your AI assistant has analyzed your document, simply say 'Can you KarSafe vault it?' The assistant will reply with a Save to KarSafe link. Tapping the link opens the KarSafe app on your phone, where you authenticate with biometric or PIN, and the document is encrypted with a fresh AES-256 key before it is uploaded. KarSafe's servers never see your document in the clear.

What is the URL format for saving a document to KarSafe?

KarSafe accepts two equivalent deeplink formats. Universal link: https://karsafe.in/app/upload?doc_type=VALUE&period=VALUE. Custom URL scheme: karsafe://upload?doc_type=VALUE&period=VALUE. The doc_type parameter accepts values such as form_16, form_1042s, p60, ir8a, t4, w2, form_1099, salary_slip, rent_receipt, form_26as, ais, itr_ack, it_notice, form_67, esop_rsu. The period parameter uses the format AY-YYYY-YY for Assessment Years up to 2025-26, or TY-YYYY-YY for Tax Years from 2026-27 onward (under the Income Tax Act 2025).

Does the AI assistant see my KarSafe password?

No. The AI assistant only generates a deeplink. When you tap it, the KarSafe app opens on your own device and asks for your biometric or PIN. The assistant never sees your password, your master key, or your decrypted documents. KarSafe's own servers also never see the document in the clear — each file is encrypted with a fresh 256-bit AES-GCM key generated on your device before upload.

How does KarSafe encrypt each document?

KarSafe uses three layers of envelope encryption, entirely on your device. When you save a document, the app generates a random 256-bit AES-GCM key (the Document Encryption Key, or DEK) unique to that file. The document is encrypted with the DEK. The DEK itself is then wrapped with your Key Encryption Key (KEK), which is derived from your vault PIN using Argon2id and never leaves your device in plaintext. Only the encrypted document and the encrypted DEK are uploaded. KarSafe's engineers cannot decrypt any document — the cryptographic design prevents it, not a policy promise.

Why should I vault my tax workings separately from the income documents themselves?

Tax workings — your HRA calculation, capital gains worksheet, foreign tax credit computation, DTAA claim reasoning — are the pillar no one else keeps. Employers retain salary slips for a few years. Government portals keep your filed returns. But nobody except you keeps the working that ties the numbers together. During scrutiny years later, the Income Tax Department asks for all three: the income proofs, the filed documents, and the workings. Losing any one breaks the chain. KarSafe is built to hold the full three-pillar chain under one vault.

Save from Claude or ChatGPT to KarSafe — Can you KarSafe vault it?

Three moments where this just works

Each of the scenarios below is a real tax conversation people have with AI assistants every week. The last line is always the same.

Scenario one · US NRI, Form 67 FTC

1042-S from a US broker, claiming foreign tax credit in India

You're an Indian resident who holds US stocks. Your broker issued a 1042-S for dividend withholding. You're working out your Form 67 claim with Claude.

You

Here's my 1042-S. I had $4,200 in US dividends and $630 withheld. How do I claim this as FTC in India?

Claude

You'll claim it on Form 67 before filing your ITR-2. Convert using the SBI TT Buy rate on the date of receipt. Under the India-US DTAA, the 15% withheld on dividends is fully creditable against your Indian tax liability on the same income. Cap the credit at the Indian tax on that foreign-source income.

You

Can you KarSafe vault the 1042-S? I need this for sixteen years under the Black Money Act.

Claude

Filed away under your AY 2026-27 foreign tax folder:

Save 1042-S to KarSafe →

Scenario two · Returning NRI, UK P60

P60 from the last UK tax year, Schedule FA for the first India return

You've just moved back to India after seven years in London. Your last UK employer issued a P60 covering April 2025 to March 2026. You're trying to understand what you need to keep.

You

I've returned from the UK this year. Here's my last P60. What do I need to keep this for?

Claude

Three independent reasons. First, Schedule FA disclosure in your Indian ITR — your UK employment and any lingering UK accounts go here. Second, the Black Money Act has a sixteen-year retention window for foreign income and assets. Third, the residency-transition year itself is scrutiny-prone; keep workings that show when you became an Indian tax resident.

You

Can you KarSafe vault it?

Claude

Saved under AY 2026-27:

Save P60 to KarSafe →

Scenario three · 143(1) intimation

CPC demand for ₹8,200, deciding whether to rectify under section 154

You filed your ITR six months ago. A 143(1) intimation landed in your email yesterday showing a demand of ₹8,200. You've uploaded the intimation PDF to ChatGPT.

You

Here's the 143(1). What's this demand for and how do I respond?

ChatGPT

The adjustment is a TDS mismatch — Form 26AS shows ₹82,400 of TDS against your PAN, your ITR claimed ₹90,600. The difference of ₹8,200 has been added back as a demand. Check whether the missing ₹8,200 is a mismatch between your employer's TDS return and your own Form 16. If your Form 16 supports the ₹90,600, file an online rectification under section 154 — you have four years.

You

Can you KarSafe vault the intimation and my filed ITR for AY 2025-26?

ChatGPT

Both vaulted under AY 2025-26:

Save 143(1) intimation to KarSafe →
Save ITR acknowledgement to KarSafe →

Action	Route	Parameters
`upload`	Upload tagging screen	`doc_type`, `period`
`home`	Dashboard	—
`docs`	All documents list	—
`security`	Security settings	—
`export`	Export screen	—
`years`	Year browser	—
`storage`	Storage management	—
`recovery-setup`	Recovery phrase setup	—
`encryption-demo`	Encryption demo	—

Group	Slug	Display name
Salary	`form_16`	Form 16
Salary	`form_16a`	Form 16A
Salary	`form_12b`	Form 12B
Salary	`form_12ba`	Form 12BA
Salary	`salary_slip`	Salary Slip
Income Summary	`form_26as`	Form 26AS
Income Summary	`ais`	AIS
Income Summary	`tis`	TIS
Capital Gains	`cg_stmt`	Capital Gains Statement
Capital Gains	`property_docs`	Property Documents
Interest / FD	`bank_stmt`	Bank Statement
Interest / FD	`interest_cert`	Interest Certificate
Interest / FD	`fd_cert`	FD Certificate
Interest / FD	`form_15g_h`	Form 15G/H
Dividend	`dividend_stmt`	Dividend Statement
Rental	`rent_receipt`	Rent Receipt
Pension	`pension_stmt`	Pension Statement
Tax Filing	`itr_ack`	ITR Acknowledgement
Tax Filing	`itr_computation`	ITR Computation
Tax Filing	`it_working`	IT Working / Computation
Tax Filing	`form_10iea`	Form 10-IEA
Tax Filing	`it_notice`	IT Notice / Intimation
Tax Filing	`it_response`	IT Response
Tax Filing	`form_67`	Form 67 (DTAA FTC)
Business / Profession	`pl_statement`	Profit & Loss Statement
Business / Profession	`balance_sheet`	Balance Sheet
Business / Profession	`invoice`	Invoice / Receipt
Business / Profession	`platform_earnings`	Platform Earnings
Foreign Tax (US)	`w2`	W-2
Foreign Tax (US)	`form_1042s`	Form 1042-S
Foreign Tax (US)	`form_1099`	Form 1099
Foreign Tax (UK)	`p60`	P60
Foreign Tax (UK)	`p45`	P45
Foreign Tax (UK)	`sa302`	SA302
Foreign Tax (SG)	`ir8a`	IR8A
Foreign Tax (CA)	`t4`	T4
Foreign Tax (AU)	`payg_summary`	PAYG Summary
Foreign Tax (DE)	`lohnsteuer`	Lohnsteuerbescheinigung
Foreign Tax (DE)	`jahressteuerbescheinigung`	Jahressteuerbescheinigung
Foreign Tax (IE)	`dirt_cert`	DIRT Certificate
Foreign Tax (IE)	`employment_detail_summary`	Employment Detail Summary
Foreign Tax (NZ)	`ir3`	IR3
Foreign Tax (generic)	`foreign_income`	Foreign Income
Foreign Tax (generic)	`foreign_tax_withholding`	Foreign Tax Withholding
Foreign Tax (generic)	`foreign_tax_return`	Foreign Tax Return
Foreign Tax (generic)	`rbi_rate_screenshot`	RBI Rate Screenshot
Deductions / Other	`donation_80g`	Donation Receipt (80G)
Deductions / Other	`insurance_prem`	Insurance Premium
Deductions / Other	`ppf_stmt`	PPF Statement
Deductions / Other	`nps_stmt`	NPS Statement
Deductions / Other	`home_loan`	Home Loan Certificate
Deductions / Other	`other`	Other

You're already doing your taxes with AI. Keep the proofs and the workings.

The moment this matters

Three moments where this just works

1042-S from a US broker, claiming foreign tax credit in India

P60 from the last UK tax year, Schedule FA for the first India return

CPC demand for ₹8,200, deciding whether to rectify under section 154

How it stays secure, every single time

The AI stays outside your vault

Your device holds the keys

Your files leave your phone already sealed

URL schema

Action vocabulary

Upload parameters

doc_type enumeration

Worked examples

Security and input handling

Encryption guarantees (what to tell users)