DEX Swap Quotes API

Name: DEX Swap Quotes API
Author: Br0ski777

by Br0ski777version 1.1.0i★ –iRuns in the cloud

Registry nameio.github.Br0ski777/dex-quotes

Install

Overview

Description from the maker (original English)

Best swap quotes across DEXes (Uniswap, SushiSwap, Aerodrome). Base & Ethereum. x402.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: SSE
Category: Crypto & blockchain

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://dex-quotes.api.klymax402.com/mcp

Run this in your terminal

claude mcp add --transport sse dex-quotes https://dex-quotes.api.klymax402.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "dex-quotes": {
      "url": "https://dex-quotes.api.klymax402.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "dex-quotes": {
      "type": "sse",
      "url": "https://dex-quotes.api.klymax402.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://dex-quotes.api.klymax402.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Br0ski777, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Crypto & blockchaini

More stars than 0% of the other 1622 servers in this category
Published to the registry more recently than 17% of the other 1622 servers in this category
Basic checks equal to or better than 100% of the other 1622 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is DEX Swap Quotes API safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 6 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Verdict: DeFi risk ratings, Highwire, Nftdata MCP

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Verdict: DeFi risk ratings

Verdict, the security marketplace for DeFi: keyless ratings, methodology and a hack incident feed.

by Verdict-CapitalVery new↓ 71/wkUpdated today

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Install

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Nftdata MCP

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Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

DEX Swap Quotes API

Best swap quotes across Uniswap, SushiSwap, Aerodrome -- price impact, route, slippage. Pre-trade essential. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

"mcpServers": { "dex-quotes": { "url": "https://dex-quotes.api.klymax402.com/mcp" } } }

Quickstart -- HTTP (x402)

curl "https://dex-quotes.api.klymax402.com/api/quote?tokenIn=...&tokenOut=...&amount=..."

-> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`dex_get_swap_quote`	GET	`/api/quote`	$0.012	Get the best swap quote across multiple DEXes
`dex_get_swap_quote`	POST	`/api/quote`	$0.012	Get the best swap quote across multiple DEXes (POST variant)

`dex_get_swap_quote`

Use this when you need a swap quote before trading tokens on-chain. Returns the best price across multiple DEXes in JSON.

Parameters

Name	Type	Required	Description
`tokenIn`	string	yes	Contract address of input token (e.g. 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 for USDC on Base)
`tokenOut`	string	yes	Contract address of output token (e.g. 0x4200000000000000000000000000000000000006 for WETH on Base)
`amount`	string	yes	Amount of input token in raw units (wei/smallest unit, e.g. 1000000 for 1 USDC)
`chain`	string	no	Blockchain network: base or ethereum (default: base)

Returns

bestDex -- which DEX offers the best rate (Uniswap, SushiSwap, Aerodrome)
amountOut -- expected output token amount
priceImpact -- percentage price impact of the trade
minimumReceived -- minimum output after slippage tolerance
route -- swap path (e.g. USDC -> WETH -> TOKEN)
gasEstimateUsd -- estimated gas cost in USD

Example response:

{"bestDex":"Uniswap V3","amountOut":"0.3215","priceImpact":"0.12%","minimumReceived":"0.3183","route":["USDC","WETH"],"gasEstimateUsd":0.04}

When to use: executing any token swap to find the best rate and estimate slippage. Essential for trade sizing and DEX comparison.

Not for: gas estimation only (use gas_get_current_price), yield opportunities (use defi_find_best_yields), wallet balance (use wallet_get_portfolio).

`dex_get_swap_quote`

Use this when you need a swap quote before trading tokens on-chain. Returns the best price across multiple DEXes in JSON. POST variant of dex_get_swap_quote -- same params passed as JSON body instead of query string.

Parameters

Name	Type	Required	Description
`tokenIn`	string	yes	Contract address of input token (e.g. 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 for USDC on Base)
`tokenOut`	string	yes	Contract address of output token (e.g. 0x4200000000000000000000000000000000000006 for WETH on Base)
`amount`	string	yes	Amount of input token in raw units (wei/smallest unit, e.g. 1000000 for 1 USDC)
`chain`	string	no	Blockchain network: base or ethereum (default: base)

Returns

bestDex -- which DEX offers the best rate (Uniswap, SushiSwap, Aerodrome)
amountOut -- expected output token amount
priceImpact -- percentage price impact of the trade
minimumReceived -- minimum output after slippage tolerance
route -- swap path (e.g. USDC -> WETH -> TOKEN)
gasEstimateUsd -- estimated gas cost in USD

Example response:

{"bestDex":"Uniswap V3","amountOut":"0.3215","priceImpact":"0.12%","minimumReceived":"0.3183","route":["USDC","WETH"],"gasEstimateUsd":0.04}

When to use: executing any token swap to find the best rate and estimate slippage. Essential for trade sizing and DEX comparison.

Not for: gas estimation only (use gas_get_current_price), yield opportunities (use defi_find_best_yields), wallet balance (use wallet_get_portfolio).

Example agent prompts

"A swap quote before trading tokens on-chain"
"A swap quote before trading tokens on-chain"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats

License

MIT

DEX Swap Quotes API

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Crypto & blockchaini

Common questions

Alternatives

Verdict: DeFi risk ratings

Highwire

Nftdata MCP

README from the maker

DEX Swap Quotes API

Quickstart -- MCP

Quickstart -- HTTP (x402)

-> 402 Payment Required, with an x402 payment challenge in the response body

Tools

dex_get_swap_quote

dex_get_swap_quote

Example agent prompts

Payment

Part of klymax402

License

`dex_get_swap_quote`

`dex_get_swap_quote`