On-chain safety, graded in plain English

Paste a mint.
Read the risk.

Mintguard reads a Solana token straight from the chain — mint authority, freeze authority, supply, liquidity depth and how concentrated the largest accounts are — and sums it into one honest A–F card with the reasons spelled out. The data is live and keyless. The grade is a transparent model, not a guarantee.

Try:
CONTRACT2keVmDVGfzSEebV6msjtXZnqg21PVmh1ZzGB6kTT4o6oCopyCopied ✓

Read-only concept. Chain reads come live from a public Solana RPC (same-origin, no key) and liquidity from DexScreener. The grade is a transparent heuristic — not an audit, not a guarantee, not financial advice. Largest accounts are token accounts, which can include pools and exchanges.

The grade card

The safety grade

Paste a mint above and Mintguard pulls its on-chain state and liquidity, then scores it against a fixed rubric. Green reasons add confidence, red reasons flag risk, and the card shows the raw facts behind every one so you can check our working.

No mint graded yet. Paste a Solana mint address, or tap one of the examples, to see its grade card.

The grade is a transparent heuristic computed in your browser from live data — it is not a security audit and cannot detect every risk (honeypots, upgradeable programs, off-chain rug intent). A high grade is not a recommendation and a low grade is not an accusation. Largest-account concentration is measured over token accounts, which often include liquidity pools, CEX wallets and vesting contracts. Always do your own research. Not financial advice.

Live risk board

Trending tokens, auto-graded

Freshly boosted and profiled Solana tokens from DexScreener, each run through the same rubric live — authorities read from the chain, liquidity and age from the market. Tap any row to load it into the grader for the full card.

Authorities & concentration live on-chain Liquidity & age DexScreener Grade heuristic
GradeTokenMint authFreezeLiquidityAgeTop-10
Reading trending tokens and grading them…

Each row is graded live with the same rubric as the main card. "Top-10" is the share of supply held by the ten largest token accounts and will read high for tokens whose liquidity sits in a pool — a reason to open the full card rather than trust the letter alone.

No black box

The rubric, in full

Every grade starts at a baseline and moves on these signals only. Nothing hidden, nothing weighted by vibes — the same points apply to every mint.

+

Mint authority renounced

When mintAuthority is null, no one can print new supply. A big green tick.

+

Freeze authority renounced

When freezeAuthority is null, no one can freeze your tokens in place. Another green tick.

+

Deep, seasoned liquidity

More liquidity and an older pair mean harder to rug and easier to exit. Scored in bands.

−

Thin liquidity

A pool under a few thousand dollars can be pulled or drained in one transaction.

−

Concentrated holders

When the top-10 token accounts hold most of the supply, a few wallets can dump the floor.

!

Brand-new pair

A pair minutes old has no track record. Not failing, but treated with caution.

ABCDF A–B lean safer on these signals · C is mixed · D–F carry clear red flags

Under the hood

How a grade is built

Four real calls to public, keyless endpoints. Nothing is cached on a server, nothing is phoned home — the grade is computed in your browser, every time.

  1. 01

    Read the mint account

    getAccountInfo (jsonParsed) returns the mint and freeze authorities, decimals and supply, straight from the chain over the same-origin RPC.

  2. 02

    Measure concentration

    getTokenLargestAccounts plus getTokenSupply give the top-20 token accounts and total supply — we sum the top-10 as a share.

  3. 03

    Check the market

    DexScreener's token endpoint gives the deepest Solana pair: liquidity in USD, pair age, 24-hour volume, price and venue.

  4. 04

    Score and explain

    The rubric turns those facts into a letter and a checklist of green and red reasons — with the raw numbers shown beside each.

Straight answers

Questions

Is a high grade safe to buy?

No. A grade only reflects the signals Mintguard can read — authorities, liquidity, age and concentration. It can't see a honeypot sell-tax, an upgradeable program, insider wallets spread across many accounts, or the team's intent. Treat an A as "the obvious boxes are ticked," never as a green light. Not financial advice.

Why is a legit token's concentration so high?

Because we measure token accounts, not owners. The single largest account is usually the liquidity pool, and the next few are often CEX hot wallets or vesting contracts. High top-10 concentration is a flag to investigate — open the full card and look at what those accounts actually are, don't just read the number.

Where does the data come from?

Mint authority, freeze authority, supply and the largest accounts are read live from a public Solana RPC, proxied same-origin so no key is ever used. Liquidity, pair age and price come from DexScreener's public API. SOL/USD is from Jupiter. Everything runs in your browser.

Do you store or track anything?

No accounts, no cookies, no tracking. The "mints graded this session" counter lives only in this tab and resets on reload. Connecting a wallet is optional, read-only, and never asks you to sign.

Can I trade or mint here?

No. Mintguard is a read-only lens on public data. Nothing is minted, traded, custodied or connected for signing. What you do with a grade is your call.

What this is, plainly

Mintguard is a read-only concept that turns live Solana data into an honest safety grade. The chain reads, liquidity and prices are real; the letter grade is a transparent heuristic, not an audit and not a promise. Nothing here connects a wallet for signing, places a trade, holds funds or launches a coin. Always do your own research. Not financial advice.