Check every coin before your agent buys it.
One call before every buy. Your rules in, GO, HOLD or NO-GO out, with every fact it read on a signed receipt.
- Rules
- Check
- GOHOLDNO-GO
- Receipt
Every paid check buys back and burns $PREFLIGHT. Why hold $PREFLIGHT ›
pump.fun on Solana · your rules decide · every receipt says what it read · not financial advice · in development
Your agent asks. Preflight answers. Then it trades.
Preflight is a tool your agent calls, not a dashboard someone reads. One connection, every answer signed, paid per check from the agent’s own wallet.
- 01MCP
preflight.check { coin, rules } - 02REST
POST /v1/check { mint, rules } - 03DISCOVER
/llms.txt · /.well-known/agent.json
- 8checks per coin
- Signedreceipts
- $0.002per check · planned
- 25free a day · planned
Planned tools, endpoints and prices. They may change before launch.
Four parts. One answer you can prove.
- 01/04 RULES.JSON
Rules
Your limits as data: how much the dev may hold, how spread out holders must be, no copied tickers. Versioned and hashed.
- 02/04 CHECK
Check
Before any buy, your agent sends the coin and your rules. Preflight reads the coin on Solana and pump.fun.
- 03/04 WATCH · 24 H
Watch
For coins your agent already holds, Preflight keeps checking and tells it the moment a rule breaks.
- 04/04 SIGNED
Receipt
Every answer is signed and stored: proof of why your agent bought, or didn't.
Rules you can read. Anyone can replay.
No score to trust. Your rules are a short file; each line becomes a check, and each check cites the fact it read. Missing data never lets a coin through unless your rules say it may.
Write your own ›{
"rules": "no-copies-v1",
"no_go_if": [
"dev_holds > 5%",
"top10_hold > 30%",
"bundled_at_launch",
"ticker_copies_older_coin"
],
"hold_if": ["first_hour_trades < 50"],
"missing_data": "hold"
}The answer isn’t the product. The proof is.
An agent that holds money should be able to explain itself. Every receipt names the rules, every check and the result, with a signature your own code can verify.
Every fact is something you can look up yourself.
- C-01PLANNED
Dev wallet
How much of the supply the creator still holds, and whether they've sold.
every check - C-02PLANNED
Top holders
How much the ten biggest wallets hold, leaving out the bonding curve.
every check - C-03PLANNED
Bundled launch
Whether a cluster of wallets bought in the same block as the launch.
every check - C-04PLANNED
Copied ticker
Whether an older coin already used the name or ticker, and which came first.
every check - C-05PLANNED
First hour
How many trades and distinct buyers the coin had in its first hour.
after 1 h - C-06PLANNED
Curve progress
How far along its pump.fun bonding curve the coin is, or whether it graduated.
every check - C-07PLANNED
Links and socials
Whether the coin lists a site or X account, and whether they existed before it.
every check - C-08PLANNED
Watch
Keeps checking coins your agent holds and tells it the moment a rule breaks.
24 h watch
Every check buys back $PREFLIGHT.
$PREFLIGHT is Preflight’s coin on pump.fun. Agents pay per check, and half of that revenue goes to buying $PREFLIGHT and burning it.
- H-01BUYBACK
Checks buy back $PREFLIGHT
Half of what agents pay for checks and watches buys $PREFLIGHT on the open market and burns it. More agents checking means more $PREFLIGHT gone.
- H-02HALF PRICE
Holders pay half
A wallet holding 1,000,000 $PREFLIGHT pays half price for every check and every watch.
- H-03FREE TIER
Four times the free checks
The same wallet gets 100 free checks a day instead of 25, before paying anything.
Planned: buybacks and holder pricing start when paid checks go live. Nothing here promises a price or a return.
What’s being built, and what it will cost.
- R-01BUILDING
Checks and signed receipts
GO, HOLD or NO-GO against your rules, every check cited, a signed receipt your code can verify.
- R-02BUILDING
Watch held coins
Standing checks on coins your agent holds, with a signal the moment a rule breaks. Preflight never trades for it.
- R-03NEXT
Connect by URL
An MCP server and a REST endpoint. No install, no account, no API key.
- R-04NEXT
Pay per check
25 free checks a day, then $0.002 per check and $0.05 per 7-day watch, in USDC from the agent's wallet.
- R-05PLANNED
$PREFLIGHT buyback
Half of check and watch revenue buys $PREFLIGHT and burns it. Holders of 1,000,000 pay half price and get 100 free checks a day.
What is Preflight?
A check your trading agent runs on a pump.fun coin before it buys. It answers GO, HOLD or NO-GO against rules you write, and signs a receipt of what it found.
Can my agent use it today?
Not yet. Preflight is in development. Follow on X to hear when the first checks go live.
Does a GO mean the coin is safe?
No. A GO means the coin passed your rules at that moment. Coins can still go to zero. Preflight is not financial advice and never trades for you.
What does HOLD mean?
Preflight couldn't decide yet, usually because the coin is too new or some data is missing. Your rules choose whether missing data means HOLD or NO-GO.
Who writes the rules?
You do, as a short file. Start from a ready-made set and change the numbers. Every version gets its own hash, so a receipt always shows exactly which rules were used.
How does my agent pay?
Per check, in USDC, from its own wallet, with no account or API key. The first 25 checks each day are planned to be free.
Can it watch coins my agent already holds?
Yes, that's planned: Preflight keeps checking a held coin and tells your agent the moment one of your rules breaks, for example when the dev starts selling.
Why hold $PREFLIGHT?
Half of what agents pay for checks and watches is planned to buy $PREFLIGHT on the market and burn it. A wallet holding 1,000,000 $PREFLIGHT will pay half price and get 100 free checks a day instead of 25. Nothing promises a price or a return.