How to Track Crypto Without API Keys: A Privacy-First Guide to 5 Safe Methods

Tracking a crypto portfolio should never require handing over the keys to your accounts. Modern privacy-first methods deliver about 90% of the visibility with 0% of the API-key blast radius — and this guide shows exactly how.

TL;DR

• You can track a full multi-exchange, multi-chain crypto portfolio without giving anyone a single API key, seed phrase, or wallet-connect signature.
• Five methods compared: screenshot scan, on-chain (public address / xPub / ENS), manual entry, CSV import, and — only when the trade-off is worth it — read-only API keys.
• Read-only does not mean risk-free. A leaked read-only key reveals your live balances and history to anyone holding it, and that alone is enough to phish you for real money.
• Yieldo built its own screenshot-based portfolio flow specifically so we would never need to custody your keys — we never ask for them, and we never store them.
• Data snapshot: 05 August 2026. Live rates, fees and optimisation opportunities on this page are refreshed at page load, not baked into the text.

Why "Track My Portfolio" Should Never Mean "Hand Over Your API Keys"

Every mainstream crypto portfolio tracker begins its onboarding the same way: "Paste your Binance / Bybit / OKX API key here." That's not a technical necessity. It is a product-design shortcut that turns a third-party app into a permanent, live listener on your accounts. And the moment you paste, you enter a trust relationship where the tracker's security posture matters more than your own.

Tracking a crypto portfolio should never require handing over the keys to your accounts. The whole promise of self-custody, and even the softer promise of "I keep my funds on an exchange I chose" — collapses the second a third party can read every trade, every position and every balance you hold.

What an API key actually grants (even read-only)

Even a "read-only" API key exposes far more than most people assume:

• Live balances across spot, margin, futures and earn products.
• Full transaction history — every deposit, withdrawal, trade, funding payment, staking reward, and — on some exchanges — sub-account structure.
• Order-flow patterns — the tracker can see your average trade size, favourite pairs, times of day you trade, and behavioural fingerprints.
• On some exchanges (e.g., default Binance settings), trading permission is on by default — you have to explicitly untick "Enable Spot Trading" when creating the key, or a compromised tracker can place orders in your account.

None of that requires knowing your password or your seed phrase. All of it is enough to build a targeted phishing attack against you that a generic scam would never manage.

The blast radius when a tracker gets breached

Here's the uncomfortable arithmetic. When you paste an API key into a portfolio tracker, the blast radius of any future breach is no longer your security — it is the union of your security, the tracker's server security, the tracker's staff, the tracker's cloud provider, and every third-party analytics or advertising SDK bundled in the tracker's app. If any one of them leaks the key database, every account attached is compromised.

That is the "blast radius" a good privacy-first setup shrinks to zero: if the third party never holds a key, there is nothing for a breach to leak that would let attackers read or move your funds.

The Ledger 2020 lesson — data alone is enough to phish you

The Ledger data breach of June–July 2020 is the cleanest illustration of why "we only need read access" is not a comforting sentence. Ledger themselves published in December 2020 that ~1.1 million email addresses and ~272,000 records containing full names, phone numbers and physical addresses had leaked. The vector wasn't Ledger's hardware; it was a third-party e-commerce and marketing API.

What followed was a multi-year phishing and extortion wave: fake "Ledger Live" security updates asking users to enter their 24-word seed, physical threats demanding roughly $700–$1,000 in BTC, and fake replacement devices shipped with backdoors. Users had given Ledger the bare minimum — an email and a delivery address to receive a hardware wallet. That alone was enough to change the risk profile of those users permanently. If a plain shipping address is that dangerous, a live balance sheet and trade history are several orders of magnitude worse.

What You Can Track Without API Keys (and What You Genuinely Can't)

Privacy-first isn't a marketing frame; it is an honest engineering trade-off. Here's what actually still works when you refuse API keys, and here's what you give up.

What survives without API access

• Current balances and allocation. A snapshot from a screenshot, a manually entered position, a public wallet scan or a CSV import all give you the same picture as an API pull: how much you hold, in which asset, on which venue.
• Live staking APY across exchanges. Public exchange rate feeds — the same data that powers our staking monitor — are collected without any user credentials. You do not need to give an API key to see that USDT earns approximately 1.69% on Bybit or that top exchanges typically pay in the 3–7% range on flexible USDT. See live numbers below in the staking widget.
• Withdrawal fees and network availability. Our public dataset for withdrawal fees and network freeze events is scraped from public exchange endpoints. You can plan a transfer without ever telling us where you hold your funds.
• Historical prices, market cap, and dominance. Purely public data. Never needs a key.
• Alerts on public thresholds — "tell me when BTC hits $X", "tell me when USDT depegs by more than 0.5%", "tell me when a network freezes on OKX". None of these require access to your accounts.

What you lose

• Sub-second, tick-level PnL. A no-API tracker refreshes when you refresh it. If you're a market-maker or scalper, this matters. For 95% of holders, it doesn't.
• Automatic tax-lot cost basis tracking. CSV import fills part of this gap, but if you need every trade auto-imported to a tax tool, you need either CSV-per-quarter or an API-linked tax service.
• Closed-position history you never exported. If you never took a snapshot and never downloaded a CSV, that history stays on the exchange and vanishes for you the day you close an account.
• Real-time alerts on internal exchange events — a specific order fill, a specific position liquidation. These are inherently API-only.

The honest bar: if you are a full-time high-frequency trader, some of this matters. If you are one of the 99% of holders who checks their portfolio a few times a week, going API-free costs you almost nothing and buys you a permanent reduction in your attack surface.

Method 1 — Screenshot Scan: Zero API Keys, Zero Wallet Connect

Screenshot scanning is the newest, and in privacy terms the cleanest, method available. You take a screenshot of an exchange balance page (or of any portfolio UI), you upload it, and a vision model reads the balances and rebuilds your portfolio server-side without ever touching your accounts. This method upholds the thesis directly: 100% visibility of what's on that screen, 0% API-key blast radius.

How screenshot recognition works

A modern vision-language model reads the image and extracts: coin ticker, quantity, and (usually) USD value. Yieldo's implementation supports Bybit, OKX, Binance, MEXC, KuCoin, Bitget, Gate.io and several TON/Solana wallet apps, and we walk through every supported venue in our dedicated screenshot portfolio guide — that piece is the deep-dive on the tool itself; this section is the privacy framing.

What the model sees is exactly what you show it. If you crop the exchange name out, the model never learns which exchange you use. If you blur account-level metadata (username, VIP tier, account ID), the model gets no fingerprint that would let it correlate multiple uploads to the same identity.

Retention. The two major API vision models used across the industry (OpenAI GPT-4o and Anthropic Claude) retain API inputs for up to 30 days by default, unless the provider signed a Zero Data Retention agreement (typically enterprise-only, retention = 0 days). Any tracker that uses a consumer vision endpoint therefore inherits that 30-day window. Yieldo's own implementation keeps only the extracted position data your session uses; we do not archive the uploaded image beyond the processing window.

Trade-offs: manual refresh vs. total minimalism

The trade-off is real: a screenshot is a snapshot, not a live feed. If your balances shifted 10 minutes ago, the screenshot from an hour ago won't know. In exchange, you get:

• No API key on file anywhere.
• No wallet-connect signature the attacker can front-run.
• No permanent link between your identity and your positions on the tracker's servers.
• The ability to re-upload as often as you actually care about — for most holders, weekly is fine.

When screenshot scan wins

Multi-CEX users get the biggest lift. If you hold spot on three exchanges, screenshot scan replaces three API keys with three drag-and-drop uploads. It also wins for holders who cannot use API keys because their exchange has locked API creation, or their region is under IP-whitelist churn, or they simply prefer never to authenticate a third party.

Method 2 — On-Chain Wallet Tracking (Public Addresses, xPub, ENS)

On-chain tracking is the natural fit for anyone who holds self-custodied assets. You paste a public address, an ENS name, or (for Bitcoin) an xPub — the tracker reads the blockchain, aggregates balances, and shows you your positions without ever asking you to sign a transaction or reveal a private key. This method upholds the thesis by leveraging what's already public.

Public addresses are public — but never share your seed phrase

The safety model is simple and permanent: a public address cannot spend funds. Anyone who has your address can see everything you do on-chain forever, but they cannot move a single satoshi. That is the entire point of asymmetric-key cryptography.

Never share a seed phrase, private key, or unlocked keystore file. Any legitimate tracker asks for only the address. Any tool that asks for a mnemonic is either broken by design or a straight-up scam.

xPub for Bitcoin, extended keys for Ethereum-derived wallets

An xPub (extended public key) is a special case. A single Bitcoin xPub can derive every past and future address on that branch of your wallet, plus the entire on-chain history of all of them. Feed an xPub into a cloud tracker and you have effectively published, permanently, the complete transaction graph of that account. Funds are still safe (nobody can spend without the private key), but your privacy has been end-of-lifed for that wallet.

Practical rule: only give an xPub to a self-hosted tool (Rotki, Sparrow, Electrum on your own machine). Never to a cloud service. For cloud tracking, paste single public addresses instead — you leak one wallet's activity, not the whole tree.

Best on-chain tools that don't require account creation

Public, no-signup on-chain trackers that read your address without an account include Etherscan / BscScan / Solscan explorers for basic balances, DeBank and Zerion for aggregated DeFi positions, and TON-native tools like Tonviewer for STON.fi and TON-based holdings. If you're a DEX-first user, this stack — plus STON.fi or Jupiter as your execution venue — genuinely lets you operate without a single API key anywhere in the loop.

Tool mortality is real. Zapper — one of the most popular on-chain-only trackers for years — announced its wind-down on 8 July 2026, and by 3 August 2026 the site, mobile apps and API were fully offline. If your entire tracking depended on one product, you had roughly four weeks to migrate. Rule of thumb: pair one hosted tracker with one self-hosted or open-source backup so your setup survives any single vendor's exit.

Method 3 — Manual Entry: The Highest-Privacy Method Still Works

Manual entry sounds prehistoric. It is also, by construction, the most private method available: you type coin + quantity into a local field, the tracker looks up the public price, and nothing about which exchange, which wallet, or which counterparty ever leaves your machine. In a Rotki-style local database, not even the totals leave the machine. This method upholds the thesis by making the trade-off explicit: total privacy, in exchange for a few minutes of your attention per week.

Why "boring" manual entry beats any API-based tracker on privacy

A manual entry says "I own 0.5 BTC and 1,200 USDT" — and stops. It does not say where you hold them, when you moved them, how you traded into them, or which venue's API might tomorrow ship you a phishing DM. The attack surface is basically your own device. If your device is clean, your portfolio data is clean.

For OG holders who keep BTC and ETH in cold storage and check balances rarely, manual entry is often the objectively correct answer. There's no vendor to breach, no key to rotate, no CSV to re-download. The mental model is closer to a spreadsheet than to an app — and spreadsheets do not get hacked at scale.

How to make manual entry sustainable

Two disciplines make it work:

• Weekly cadence. Every Sunday, one 5-minute pass: open the tool, add or update positions that changed. Skip weeks where nothing moved.
• Event-based updates. Any time you make a real move (a large withdrawal, a new staking deposit, a rebalance), update the manual tracker in the same session. That way you never accumulate a backlog.

If you also want live staking yield on your USDT sitting on Bybit or MEXC, pair manual entry with our USDT staking rate feed — the yield numbers are public, so you can model expected reward without giving anyone read access to your actual position.

Method 4 — CSV / Trade-History Import: Historical Data Without a Live Link

CSV import is a middle path: you download your full transaction history from an exchange once, import it into a local tool, and you have a permanent, offline record of your positions and cost basis. No live API link. No ongoing exposure. This method upholds the thesis by moving the trust relationship from a permanent server-side connection to a one-off, user-initiated file transfer.

Which exchanges expose clean CSV exports

All major CEX platforms in Yieldo's exchange coverage — Bybit, OKX, MEXC, Bitget, KuCoin, Gate.io and Binance — offer at least a spot trade-history CSV export, most also expose deposit / withdrawal / staking rewards / funding payments in the same account-statement flow. The quality varies (some pages cap at 90 days per download, some give you the whole account in one file), but the raw data is there.

For most users the workflow is quarterly: on the 1st of each quarter, download the previous quarter's CSVs from every venue you use, import into a local tool (Rotki, Koinly, CoinTracker offline, or even a maintained spreadsheet), and archive the file. Your local database now contains everything up to today, without any exchange ever holding a live line into a third-party server.

How to import once and refresh without re-authenticating

CSV import is authenticated once (you have to log in to download the file). It is not authenticated continuously. That is the entire privacy advantage. The refresh cadence is chosen by you, not by the tracker: quarterly for tax purposes, monthly if you're active, weekly only if you're really active.

The one caveat is what happens to the CSV after you download it. Treat it as sensitive: it is a complete, timestamped list of everything you did on that exchange. Keep it encrypted at rest, or better, keep it only on the machine that hosts your tracker.

Method 5 — Read-Only API Keys: When They're the Right Call (and How to Use Them Safely)

We named the whole article "without API keys" — but sometimes read-only is genuinely the correct choice. High-frequency traders who need tick-level PnL, tax-reporting users who cannot afford to miss a single trade, and multi-account operators managing several sub-accounts all have real reasons to prefer a live feed over a weekly snapshot. If you belong to one of those groups, this section is for you. It still upholds the thesis by making the risks explicit and giving you a five-rule checklist to minimise them.

Read-only ≠ safe — what read-only really exposes

"Read-only" is a permission scope, not a guarantee. A leaked read-only key does not let an attacker withdraw funds directly (that requires withdrawal permission plus, on most exchanges, IP whitelisting). But it does let them see:

• Your live balance and allocation.
• Your full trade history and typical position sizing.
• Your funding-rate positions and open orders.
• Any sub-account structure you use.

That intelligence is exactly what a targeted phishing operation needs. The 3Commas case in section "Real Incidents" below is the canonical example of what happens when a large batch of "read-only" keys leaks — and it turns out that on some exchanges, read-only-with-trading (a common configuration users don't realise they enabled) is enough to drain accounts by trading them into illiquid pairs.

The 5-rule safety checklist

If you're going to use a read-only API key, do it like this:

1. IP-whitelist the key. On Binance the key expires in 30 days without an IP restriction. On Bybit and OKX, IP-whitelisting is optional but strongly recommended. Set it to the specific IPs of the tracker's servers (the tracker will publish this list — if it doesn't, walk away).
2. Explicitly disable withdrawal and trading permissions. On every exchange's key-creation flow, uncheck both. Trading is on by default in some UIs — you have to actively remove it.
3. Rotate quarterly. Delete the old key, create a new one, paste into the tracker. Ten minutes every three months buys a huge reduction in the window a leaked key can be abused.
4. One tracker per key. Never reuse the same key across two tools. If tracker A gets breached, tracker B is not affected.
5. Revoke on inactivity. If you have not opened a given tracker in 90 days, delete the key. Binance.US automatically resets keys to read-only after 90 days of inactivity — treat that as a hard floor, not a ceiling.

When read-only API is genuinely worth it

Three profiles benefit unambiguously:

• High-frequency spot / futures traders who need live PnL across accounts.
• Tax-reporting users in jurisdictions where quarterly filings require every trade auto-imported (US, UK, Germany, Australia to varying degrees).
• Fund / multi-sub-account operators managing dozens of accounts, where manual snapshotting simply doesn't scale.

Everyone else: default to Methods 1–4, and only escalate to a read-only key if you find yourself refreshing a snapshot more than five times a day.

Note the fees widget above: even with a read-only API key giving you a perfect view of your Binance balance, that view does not unfreeze USDT ERC-20 withdrawals when the exchange puts them on maintenance. Tracking shows state; it doesn't unlock action. That is the "tracking ≠ control" trap — and it's a big part of why our public network-availability freeze tracker exists in the first place.

Real Incidents: What Happens When API Keys Leak

Three real incidents, one from each of the last three tracking-tool eras, illustrate the cost of getting this wrong.

3Commas 2022 — read-only pretense, real losses

In October 2022, 3Commas users started reporting unauthorised trades on their linked exchange accounts. 3Commas initially attributed the losses to individual phishing. By December, an anonymous Twitter account had begun publishing dumps of stolen 3Commas API keys — first 10,000, then approximately 100,000 keys linked to Binance, KuCoin and other exchanges. On 29 December 2022, 3Commas formally confirmed the breach and the FBI opened an investigation.

Confirmed losses were at least $6 million (3Commas' own statement); a Telegram group of victims aggregated claims exceeding $20 million, and CoinDesk reported that estimates had "at least doubled" from the initial figure in the weeks following disclosure. Critically: many of those keys were configured with trading permission enabled, allowing attackers to dump user balances into low-liquidity pairs and self-trade — even without withdrawal permission. "Withdrawal disabled" did not mean "funds safe."

The dozens of Telegram "helper bots" that quietly harvest keys

Since 2023, the CIS-facing Telegram ecosystem has produced a steady stream of "arbitrage helper" and "portfolio bot" projects that ask you to paste your API keys into a chat with a bot. Some of them are legitimate. Many are not. The pattern is depressingly consistent: bot goes live, attracts a few hundred users, operator disappears or "gets hacked", user keys get drained. We won't name specific bots because the ecosystem churns too fast for a stable list to be useful — but the shape of the attack is the same every time.

If a tracker's onboarding flow lives inside a Telegram chat and asks you to send API keys in a message, treat it exactly like a stranger asking for your bank login. Because that's what it is.

Pattern-recognition: how to spot an unsafe tracker in 60 seconds

Sixty seconds of due diligence prevents most of these attacks. Check for:

• Explicit retention policy. If the tracker cannot tell you in one paragraph how long they keep your API keys, screenshots, or wallet addresses — walk.
• Named legal entity. "Made by an anonymous developer" is fine for an open-source library; it is not fine for something that will hold live credentials.
• Public IP whitelist. If they support read-only keys but won't tell you which IPs to whitelist, they either haven't thought about it, or don't want you to.
• No withdrawal permission ever requested. A legitimate tracker never needs it. Full stop.
• Realistic promises. "Guaranteed 10% APR by automated trading with your API key" is not a portfolio tracker; it is either an unregulated fund or a scam.

How Yieldo Tracks Portfolios Without API Keys

We built Yieldo's portfolio flow around one principle: we never want to be the point of failure for anyone's crypto. That principle is why we do not ask for API keys, we do not ask for seed phrases, and we do not ask you to Wallet-Connect to any of your keys. And it's why we can honestly call this a privacy crypto portfolio tracker without hedging.

Screenshot scan → live portfolio in 30 seconds

Our /portfolio/scan endpoint accepts an image, extracts positions with a vision model, and hands the result back to your session. We hold the extracted position data as long as you use the app; we do not archive the source image, and we do not link it to any account beyond your own session. The full walkthrough — supported exchanges, what to crop, what happens on the backend — lives in our screenshot portfolio guide, which is the tool-focused companion to this methodology piece.

Public data everywhere else — no key custody, no seed intake

For everything the screenshot doesn't cover, we lean on public data:

• Staking APY snapshots across all 10 exchanges we cover — public exchange feeds, updated every 10 minutes, no keys required. Full data model: about/data.
• Withdrawal fees and network availability — public, machine-readable at /fees/network-status.
• Freeze-event history — the same network-freeze dataset that powers our alerts is available as an open export.

We have 900+ monthly active users on the app today, and none of them have handed us a private key or an API key. That is not a marketing statement; it is an architectural fact — because we never built the endpoints to accept them.

Staking rewards and fee optimization without touching your accounts

The best example of what public data can do for you sits at the top of this article. The portfolio optimizer widget below shows: for a reference $1,000 holding of the top popular coins, the best available staking APR across all covered exchanges and the monthly gain versus the worst option. You didn't tell us anything about your portfolio. We didn't need you to.

If you want to model your own holdings against those live public rates without giving anyone access, our portfolio optimisation guide walks through the arithmetic with the calculator inline.

Decision Framework — Which Method Fits Which Holder

The methods are not competing for a single crown — they map to different holder profiles. Here is the honest privacy vs. convenience trade-off, and here is who each method fits.

The privacy vs. convenience trade-off, in one table

Method	Privacy	Convenience	Live PnL	Best for
Screenshot scan	Very high	High	Snapshot	Multi-CEX users, spot-only, most holders
On-chain / xPub	High (address) / low (xPub)	Very high once set	Live on-chain	DeFi natives, self-custody, cold-storage OGs
Manual entry	Highest	Low	None	OG holders, small stable portfolios, absolute privacy
CSV import	High	Medium	Historical	Quarterly tax users, medium-frequency traders
Read-only API	Medium (5-rule checklist)	Very high	Live	High-frequency traders, tax auto-import, fund operators

For an even deeper comparison across specific products (versus just methods), see our companion piece: the 2026 privacy-first tracker listicle.

Recommended stack by profile

• OG holder (BTC + ETH in cold storage, spot on one CEX): manual entry for cold storage + screenshot scan for the CEX. Refresh weekly.
• CEX-heavy active trader (3–5 exchanges, weekly rebalances): screenshot scan across all venues, CSV every quarter, escalate to read-only key only on the one exchange you trade daily.
• DeFi native (mostly on-chain, occasional CEX): on-chain wallet tracking + a single screenshot for the CEX. This is the natural fit for anyone using STON.fi or Jupiter as an execution venue — no keys anywhere in the loop. If cross-exchange spread opportunities enter your workflow, our public spot arbitrage feed is another data source you can consume without ever authenticating.
• TON / Solana user: on-chain wallet tracking as primary; see our TON portfolio and staking guide for chain-specific tooling.
• Decision-support case: if you're still on the fence about moving funds around after this decision, the "should I move crypto?" guide extends this framework to withdrawal decisions.

For anyone who ends up combining methods across multiple venues, the multi-exchange portfolio tracking pillar is the natural next read.

The calculator above answers a common question: "how much am I actually losing by refusing an API-linked auto-compound tracker?" Answer: usually less than the rounding error on your monthly staking reward. Model your own scenario before deciding whether a live API link is worth the risk.

How to Get Started in 15 Minutes (No API Keys Required)

Six steps, no API keys, no seed phrase requests, no Wallet-Connect signatures.

1. Choose the right method for your holdings mix. CEX-heavy → screenshot scan. Self-custody / DeFi → on-chain wallet address. Cold-storage OG → manual entry. Multi-venue active trader → hybrid (screenshot + on-chain + optional read-only on the single most active exchange).
2. Verify tool trust before you connect. Skim the tracker's terms: how long are inputs retained, is there a named legal entity, do they support IP whitelisting, do they publish a public IP list, is there any audit or open-source component? If any answer is "we don't say," pick a different tool.
3. Add holdings without API keys. On Yieldo, that means opening /portfolio/scan and uploading a screenshot; or pasting your on-chain address; or entering positions manually. No permission dialogs, no signature prompts.
4. Verify imported balances against source. Cross-check the tracker's numbers with what your exchange UI or a block explorer shows. A 1-cent rounding difference is fine; a 5% mismatch means the parser missed something — re-take the screenshot with a cleaner crop, or split the upload into two shots.
5. Set alerts and refresh cadence. Without an API, refresh is on your schedule. Weekly is enough for most holders. Configure price / depeg / network-freeze alerts so external events tell you when to re-upload.
6. Maintain: rebalance, add new positions, migrate between methods. As your portfolio grows, add new addresses, re-shoot screenshots when you add a new exchange, and periodically audit which trackers you still use. Every tool you no longer use is one you should log out of and, if applicable, delete the account.

That's the full 15-minute setup. If you want to bookmark this framework and share it with someone thinking about their own privacy posture, the canonical URL is on our privacy-first tracking hub.

FAQ

Can I track my crypto portfolio without giving API keys?

Yes, entirely. The five methods in this guide — screenshot scan, on-chain address, manual entry, CSV import, and (only if you must) read-only API — cover every combination of exchange and self-custody holdings. Yieldo's own screenshot flow is built specifically so you never have to give anyone a key. Tracking a crypto portfolio should never require handing over the keys to your accounts.

Are read-only API keys actually safe?

Safer than trade-enabled keys, but not risk-free. A leaked read-only key exposes your live balance, full trade history and position sizing — enough for a targeted phishing attack. On some exchanges "read-only" still includes trading permission by default, which the 3Commas 2022 leak showed can lead to real fund loss even without withdrawal rights. If you must use a read-only key, follow the five-rule checklist in Method 5: IP-whitelist, disable trading, rotate quarterly, one tracker per key, revoke on 90-day inactivity.

What is the safest method to track a multi-exchange crypto portfolio?

For most holders, screenshot scan across all CEX venues plus on-chain address tracking for self-custody wallets. This combination gives you approximately 90% of the visibility a full API-linked tracker would, with 0% of the API-key blast radius. Escalate to a read-only key on a single exchange only if you actively trade more than five times a day.

What does a screenshot-based portfolio scanner actually see?

Only what you show it. A vision model reads coin ticker, quantity, and USD value from the pixels of your screenshot. It does not access your account, it does not read your history, and it does not know which exchange you use unless you leave the branding in the screenshot. Yieldo's scanner keeps the extracted position data only for your session and does not archive the source image beyond processing. See the screenshot portfolio guide for the full data-handling breakdown.

What alternatives to API-based crypto trackers exist?

Screenshot scanners (Yieldo /portfolio/scan and a handful of others), pure on-chain trackers (DeBank, Zerion, Tonviewer, plus explorers like Etherscan / Solscan / Tonviewer), manual-entry tools (Rotki self-hosted, CoinGecko Portfolio local mode), CSV-import tools (Rotki, Koinly offline, CoinTracker offline). Combine two of these — usually one screenshot-based and one on-chain — and you replace any API-linked tracker for 95% of use cases.

How do on-chain crypto trackers work without exchange access?

A public blockchain address is, as the name implies, public. Trackers query the chain's indexed data — either directly via a node or through an explorer's public API — and aggregate balances per address. Yieldo does the same for TON, Ethereum and Solana wallets in the portfolio flow. Nothing is signed, nothing is authenticated on your side; the tracker only reads what the chain already exposes to everyone.

Can I track my staking rewards without giving API keys?

Yes. Live APY rates across all 10 exchanges we cover are public data — see the staking rate feed or the widget above in this article. Combine that with a manual entry or screenshot of your position, and you can project your expected reward without ever authenticating anywhere. For USDT specifically, the USDT staking rate comparison shows the current best APY on every exchange.

What do I lose if I skip API keys — real-time PnL, tax lots, auto-refresh?

You give up tick-level PnL (screenshots and on-chain reads are snapshot-frequency, typically minutes), you give up automatic tax-lot cost basis (CSV import fills part of this gap quarterly), and you give up auto-refresh (you have to re-upload or re-read on your own schedule). For most holders, none of these matter. For high-frequency traders and users in strict tax jurisdictions with quarterly filings, they can matter enough to justify a carefully configured read-only key on a single exchange.

Does Yieldo store my screenshot, wallet address, or portfolio data?

Portfolio data lives in your session while you use the app; we do not sell it, we do not use it for advertising, and we do not link it to third-party analytics. Uploaded screenshots are processed and not archived beyond the processing window. Wallet addresses used for on-chain tracking are stored so we can refresh balances for you — you can delete them at any time from the portfolio settings. Our public datasets (staking, fees, freeze events at about/data) contain no user data by construction.

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Disclaimer. This article contains affiliate links. Yieldo may earn a commission at no extra cost to you when you sign up to an exchange through one of these links. That does not change our editorial position: the article recommends privacy-first methods over API-linked ones because we believe they are safer for most holders, not because they generate revenue for us (they don't).

Risk warning. Nothing here is financial or tax advice. Read-only API keys, on-chain trackers and screenshot scanners all carry residual risk from vendor breach, phishing and device compromise. The methods in this guide reduce that risk but do not eliminate it. Always assume any address, screenshot or CSV you share with a third party could eventually leak.

About the authors. The Yieldo Team designs privacy-first portfolio tools at yieldo.me/portfolio. We built a screenshot-based scan flow specifically because we didn't want to hold anyone's API keys — and we compare tracking methods across CEX, DEX and on-chain wallets every week for our 900+ monthly readers. All open datasets — staking APRs, withdrawal fees, network freeze events — live at about/data for anyone to audit or reuse.

Last updated: 05 August 2026