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CurveCall Buy Quote
x402
CurveCall Buy Quote is a paid API for AI agents from curvecall.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Computes the output token amount, average price, fee, and updated reserves for a bonding-curve buy trade given virtual reserves and input amount.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call market math and token intel for AI agents, via x402.
Output
Returns the number of tokens received (amount_out), the fee charged, the average price paid per token, the new token spot price after the trade, and the updated virtual quote and token reserves reflecting the post-trade state.
Example use cases
Estimate token output before trading
“I want to buy meme tokens on a bonding curve that currently has 30 quote reserves and 1,072,521 token reserves. How many tokens will I receive if I put in 5 quote-asset units with a 100 bps fee?”
Check price impact of large buy
“What is the average price per token and how much does the price move if I spend 50 quote units buying into a bonding curve with 1000 quote reserves and 500,000 token reserves at the default 100 bps fee?”
Compare fee scenarios for a trade
“For a bonding curve with 20 quote reserves and 800,000 token reserves, calculate my buy quote for 2 quote units at both 50 bps and 200 bps fees so I can compare how the fee affects my token output.”
Technical details
Endpoint
GEThttps://curvecall.onrender.com/v1/quote/buy?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, pay-per-call bonding-curve buy-side math without running your own AMM simulation — ideal for AI agents that need real-time trade quotes, slippage estimates, or post-trade reserve projections on constant-product curves before executing or recommending a trade.
Side effects
- Missing required fields (amount_in, quote_reserves, or token_reserves) returns a 4xx validation error
- Zero or negative reserve values may cause division-by-zero or invalid math errors
- amount_in larger than available liquidity may return zero or nonsensical output_out
- Payment not sent or incorrect x402 payment header returns 402 Payment Required
- Service temporarily unavailable on Render cold-start returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Tags
x402
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