Plumbline measures spread, depth and uptime on public exchanges, every 30 seconds, against your contract. Independent of your market maker.
No API keys, nothing to install, first data within a minute.
SOL/USDT · depth at ±2 %
min(bid, ask) within ±2 % of mid, $ · median per 15 min
No data for < 0.1 % of this window.
SOL/USDT depth at ±2 % of mid on three venues, 25 Sep 2026 18:15 → 26 Sep 2026 18:15 UTC, measured from public order books. The alert is staged.
Out of terms: OKX · Bid depth · 12.0 k $ below your 50 k $ minimum for 14m00s
Contract v2 · grace 5 min
You pay a market-making retainer. The only report is the market maker's own.
Order books are public. Nobody on your team watches them at 3 a.m.
At renewal, you have no numbers of your own to push back with.
Ticker, the exchanges where it is listed, and the targets you signed: maximum spread, minimum depth per side, uptime, hours.
Every 30 to 60 seconds, from the exchanges' public endpoints. No API keys, nothing to install.
Telegram when a target is missed for longer than the grace period. A dashboard for every day. An immutable report every month.
No API keys, nothing to install, first data within a minute.
A Telegram message when spread or depth stay outside your terms for longer than the grace period, and another when they are back.
Out of terms: OKX · Bid depth · 12.0 k $ below your 50 k $ minimum for 14m00s
Staged example.
Uptime per venue, spread, depth at ±1 %, ±2 %, ±5 % and ±10 % of mid, and price dislocation between venues. Live, and day by day.
Immutable and timestamped, with every episode listed: start, end, duration, which target. PDF with its SHA-256, and the data behind it.
A slot without a usable public book reads measurement unavailable: excluded from uptime, never counted as a gap. You see how much of the month was measured, and why the rest was not.
We measure. You decide.
A liquidity score for tokens we track, computed from public books only: median spread and median depth over 30 days, one grade from A to E, the formula published.
lower bound on Bybit and KuCoin
Measured on 5 venues, 24 Sep 2026 16:00 to 26 Sep 2026 18:00 UTC · no score yet: a score needs 7 days of data
no data < 0.1 % to 0.1 % per venue
lower bound on every venue
Measured on 5 venues, 24 Sep 2026 16:00 to 26 Sep 2026 18:00 UTC · no score yet: this token is not published
no data 0.0 % to 0.1 % per venue
lower bound on every venue
Measured on 5 venues, 24 Sep 2026 16:00 to 26 Sep 2026 18:00 UTC · no score yet: this token is not published
no data 0.0 % to 0.1 % per venue
Spread and depth: the lowest to the highest venue median over up to 30 days of hourly measurements (one figure where the venues agree); depth is min(bid, ask) · lower bound: on that venue the public book stops before the 2 % band · no data: 30 s slots without a measurement, excluded, never a gap
Less than one day of a typical market-making retainer.
No. Plumbline reads the public order books that anyone can see. It never holds a key to any account.
That is their report. This is the book. When the two agree, you know it. When they do not, you have the numbers.
Binance, OKX, Bybit, KuCoin and Gate today. More on request.
The share of samples where the spread and the depth on both sides met your targets. Samples we could not measure are excluded and reported separately.
No. We show what the book showed, minute by minute, against your contract. You draw the conclusions.
Yes. Every report comes as PDF with its hash, and the measurements behind it as CSV.