Slippage estimate, swap quote, and best DEX price on Base
Slippage estimate, swap quote, and best DEX price on Base - compares Uniswap v2, Uniswap v3, and Aerodrome on-chain via Multicall3, returns amount received, chosen path, and price impact.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
953 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://x402.agentindex.world/base/quote
| Category | Market data |
|---|---|
| Provider host | x402.agentindex.world |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.003 | 953 ms |
Example input (from the provider)
{
"body": {
"amount_in": 1000000,
"token_in": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"token_out": "0x4200000000000000000000000000000000000006"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"amount_in": {
"exclusiveMinimum": 0,
"title": "Amount In",
"type": "integer"
},
"token_in": {
"title": "Token In",
"type": "string"
},
"token_out": {
"title": "Token Out",
"type": "string"
}
},
"required": [
"token_in",
"token_out",
"amount_in"
],
"title": "QuoteInput",
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"aerodrome": {
"properties": {
"amount_out": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Amount Out"
},
"amount_out_raw": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Amount Out Raw"
},
"available": {
"title": "Available",
"type": "boolean"
},
"detail": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Detail"
}
},
"required": [
"available",
"amount_out_raw",
"amount_out",
"detail"
],
"title": "DexQuote",
"type": "object"
},
"amount_in": {
"title": "Amount In",
"type": "string"
},
"best_amount_out": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Best Amount Out"
},
"best_amount_out_raw": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Best Amount Out Raw"
},
"best_dex": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Best Dex"
},
"decimals_in": {
"title": "Decimals In",
"type": "integer"
},
"decimals_out": {
"title": "Decimals Out",
"type": "integer"
},
"price_impact_pct": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Price Impact Pct"
},
"token_in": {
"title": "Token In",
"type": "string"
},
"token_out": {
"title": "Token Out",
"type": "string"
},
"uniswap_v2": {
"properties": {
"amount_out": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Amount Out"
},
"amount_out_raw": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Amount Out Raw"
},
"available": {
"title": "Available",
"type": "boolean"
},
"detail": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Detail"
}
},
"required": [
"available",
"amount_out_raw",
"amount_out",
"detail"
],
"title": "DexQuote",
"type": "object"
},
"uniswap_v3": {
"properties": {
"amount_out": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"