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BaseDue Exit Liquidity Analyzer
x402
BaseDue Exit Liquidity Analyzer is a paid API for AI agents from api.firstmention.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Estimates how much USD can be extracted by selling a specific ERC-20 token on Base DEXes, checking pool depth and price impact before exiting a position.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call HTTP APIs, paid with x402 in USDC on Base (eip155:8453): agentkit, api-change-check, basedue, basewatch, chainread, check-sanctions, chgwatch, company-facts, composite, edgar, feednews, pageaudit, solcheck, token-dd, txpreflight, walletcheck, webmd, webread, websearch, x402index. Each operation describes its service.
Output
Returns a JSON object with: overall ok status, chain identifier, ETH/USD price, and per-token results including best pool address and venue (e.g. Aerodrome), maximum USD that can be extracted, spot price, quote asset depth, token reserves, and a size simulation showing expected USD out, impact percentage, slippage percent and USD amount for the requested position size. Includes a note that Uniswap V3 pools are excluded and the model is a constant-product lower-bound estimate.
Example use cases
Pre-exit slippage check for large position
“I'm about to sell $10,000 worth of token 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — can you check if there's enough DEX liquidity and what my price impact would be if I limit it to 1.5%?”
Best pool venue discovery before selling
“Which pool on Base gives me the best exit for selling token 0xcbb7c0000ab88b473b1f5afd9ef808440eed33bf, and what's the maximum USD I can get out without excessive slippage?”
Risk check before bot liquidation
“My trading bot is about to liquidate a position in token 0x4200000000000000000000000000000000000006 on Base worth $3000 — can you verify the exit capacity and make sure price impact stays under 2%?”
Technical details
Endpoint
GEThttps://api.firstmention.uk/s/basedue/exit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, on-chain-grounded estimate of DEX exit capacity for a specific ERC-20 token on Base before executing a sell. Ideal for agents managing DeFi portfolios, liquidation bots, or risk systems that need to know whether a position can be exited within acceptable slippage bounds without actually submitting a transaction. Prefer this over general token price APIs when you need pool-level depth, venue comparison, and impact simulation rather than just a spot price.
Side effects
- Invalid or non-existent token address returns error
- Token has no liquidity pools on Base — ok:false with empty venues
- Payment not received — 402 response requiring x402 USDC payment on Base
- Price impact exceeds limit — size.ok:false with actual impactPct reported
- Network or RPC issues returning 5xx
- Missing required token query parameter returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"note": "Capacity is a LOWER BOUND: Uniswap V3 pools are excluded from the size model. Constant-product model; comparable in order of magnitude, not exact.",
"chain": "base",
"ethUsd": 2343.51,
"results": [
{
"ok": true,
"best": {
"pool": "0x2578365b3dfa7ffe60108e181efb79feddec2319",
"venue": "aerodrome",
"maxUsdOut": 3230.39,
"quoteAsset": "WETH",
"maxTokenSell": 0.040595
},
"size": {
"ok": false,
"pool": "0x2578365b3dfa7ffe60108e181efb79feddec2319",
"venue": "aerodrome",
"usdOut": 4923.79,
"impactPct": 1.5242,
"slippagePct": 1.524,
"slippageUsd": 76.21,
"requestedUsd": 5000
},
"token": "0xcbb7c0000ab88b473b1f5afd9ef808440eed33bf",
"symbol": "cbBTC",
"venues": [
{
"pool": "0x2578365b3dfa7ffe60108e181efb79feddec2319",
"venue": "aerodrome",
"maxUsdOut": 3230.39,
"quoteAsset": "WETH",
"maxTokenSell": 0.040595,
"spotPriceUsd": 80380.2,
"quoteDepthUsd": 324023.6,
"tokenReserveUi": 4.029
}
],
"impactLimitPct": 1
}
],
"endpoint": "exit"
}
}Tags
x402
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