# Uniswap Universal Router Decoder MCP server

Decode and encode Uniswap Universal Router calldata (V2, V3, V4). Read-only: never signs or sends.

## At a glance

Uniswap Universal Router Decoder is an MCP server in the Dev Tools & Git category. It runs locally over stdio via `uvx uniswap-universal-router-decoder`, and declares no required credentials. It exposes 3 tools, including decreaseLiquidity, collect and burn. It scores A (91/100) on the MCP Skills Hub health score as of Oct 28, 2026.

## Install

### How to install Uniswap Universal Router Decoder in Claude Code

1. Add the server

```bash
claude mcp add uniswap-universal-router-decoder -- uvx uniswap-universal-router-decoder
```

2. Verify it's connected

```bash
claude mcp list
```

3. Sharing it with your team?

   Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).

4. Use it in a session

   Ask Claude to use the tools this server exposes (e.g. decreaseLiquidity, collect, burn). It discovers them automatically.

### How to install Uniswap Universal Router Decoder in Claude Desktop

1. Open your MCP config

   macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

2. Add this server

```json
{
  "mcpServers": {
    "uniswap-universal-router-decoder": {
      "command": "uvx",
      "args": [
        "uniswap-universal-router-decoder"
      ]
    }
  }
}
```

3. Restart Claude Desktop

   The tools appear under the 🔌 menu once the app reloads.

### How to install Uniswap Universal Router Decoder in Cursor

1. Create / edit .cursor/mcp.json in your project

```json
{
  "mcpServers": {
    "uniswap-universal-router-decoder": {
      "command": "uvx",
      "args": [
        "uniswap-universal-router-decoder"
      ]
    }
  }
}
```

2. Enable it

   Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.

### How to install Uniswap Universal Router Decoder in Codex CLI

1. Add to ~/.codex/config.toml

```toml
[mcp_servers.uniswap-universal-router-decoder]
command = "uvx"
args = ["uniswap-universal-router-decoder"]
```

2. Run Codex

   Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.

### How to install Uniswap Universal Router Decoder in Windsurf

1. Edit ~/.codeium/windsurf/mcp_config.json

```json
{
  "mcpServers": {
    "uniswap-universal-router-decoder": {
      "command": "uvx",
      "args": [
        "uniswap-universal-router-decoder"
      ]
    }
  }
}
```

2. Reload

   Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.

### How to install Uniswap Universal Router Decoder in Cline

1. Open Cline → MCP Servers → Configure

   Adds to cline_mcp_settings.json.

2. Add the server

```json
{
  "mcpServers": {
    "uniswap-universal-router-decoder": {
      "command": "uvx",
      "args": [
        "uniswap-universal-router-decoder"
      ]
    }
  }
}
```

### How to install Uniswap Universal Router Decoder in VS Code

1. Create .vscode/mcp.json

```json
{
  "servers": {
    "uniswap-universal-router-decoder": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "uniswap-universal-router-decoder"
      ]
    }
  }
}
```

2. Start it

   VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.

## Tools

- `decreaseLiquidity` — removes liquidity from the position. The freed tokens are NOT sent out: they are recorded
- `collect` — sends `min(amountMax, tokensOwed)` to the recipient. `tokensOwed` holds both the principal freed by
- `burn` — deletes the position (NFT). It requires the position to be empty (`liquidity == 0` and

Source repository: https://github.com/Elnaril/uniswap-universal-router-decoder

---

Source: https://mcp-skills-hub.vercel.app/mcps/io-github-elnaril-uniswap-universal-router-decoder · MCP Skills Hub · data as of 2026-10-28T12:31:05Z