# Mercury MCP server

> Query Mercury business accounts, transactions, balances, statements, cards and recipients from your AI assistant.

- Listing: https://mcp.tc/i/mercury
- Connect: use the server's own URL `https://mcp.mercury.com/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint.
- Type: remote (Streamable HTTP)
- Auth: OAuth sign-in
- Category: [Finance & Payments](https://mcp.tc/c/finance-payments)
- Vendor: Mercury
- Homepage: <https://docs.mercury.com/docs/what-is-mercury-mcp>

## About

Connects an AI assistant to your Mercury business banking account. You can review spend by category, merchant, user or card, check account balances, download statements as PDFs, and look up recipients and active cards. The documentation describes it as mainly read-only and still in Beta, so important figures should be checked against the Mercury account.

It runs as a hosted streamable HTTP endpoint at mcp.mercury.com. Users sign in with Mercury through OAuth. No local install or API key is needed. Access tokens expire after 24 hours.

## What it can do

- Report on spend by category, merchant, user and card
- Check account-level balances
- Download account statements as PDFs
- Look up recipients and active cards
- Browse account transactions

## Example prompts

- "How much did we spend on software last month?"
- "What is the current balance across my Mercury accounts?"
- "List the active cards on our Mercury account."
- "Download the latest statement for my checking account."

## Install

### Claude Code

1. Run this in a terminal, in your project folder:

```bash
claude mcp add --transport http mercury https://mcp.mercury.com/mcp
```

2. Start Claude Code, type `/mcp`, pick **mercury** and choose **Authenticate**. A browser window opens for the Mercury sign-in.

Add `--scope user` to make it available in every project, not just this one.

### Claude Desktop

1. Open **Settings → Connectors** and click **Add custom connector**.

2. Name it **Mercury** and paste this URL:

```url
https://mcp.mercury.com/mcp
```

3. Click **Add**, then **Connect**, and sign in when Mercury asks.

Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too.

### claude.ai

1. Open the connector form on claude.ai. This button fills in the name and URL for you:

[Add to claude.ai](<https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Mercury&connectorUrl=https%3A%2F%2Fmcp.mercury.com%2Fmcp>) (opens connector settings)

2. Check that the URL reads `https://mcp.mercury.com/mcp` and click **Add**.

3. Click **Connect** and sign in when Mercury asks.

Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**.

### ChatGPT

1. On chatgpt.com, open **Settings → Security and login** and turn on **Developer mode**.

2. Go to `chatgpt.com/plugins` and click **+** to create an app for a remote MCP server.

3. Paste `https://mcp.mercury.com/mcp` as the server URL and choose **OAuth**. ChatGPT sends you to Mercury to sign in.

Developer mode is available on the web for Plus, Pro, Business, Enterprise and Education accounts.

### Cursor

[Add to Cursor](<https://cursor.com/install-mcp?name=mercury&config=eyJ1cmwiOiJodHRwczovL21jcC5tZXJjdXJ5LmNvbS9tY3AifQ%3D%3D>) (opens Cursor)

Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project):

`mcp.json`:

```json
{
  "mcpServers": {
    "mercury": {
      "url": "https://mcp.mercury.com/mcp"
    }
  }
}
```

Cursor shows **Needs login** next to the server. Click it to sign in.

### VS Code

[Install in VS Code](<https://vscode.dev/redirect/mcp/install?name=mercury&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.mercury.com%2Fmcp%22%7D>) (opens VS Code)

Or from a terminal:

```bash
code --add-mcp '{"name":"mercury","type":"http","url":"https://mcp.mercury.com/mcp"}'
```

Or commit it to the repo in `.vscode/mcp.json`:

`.vscode/mcp.json`:

```json
{
  "servers": {
    "mercury": {
      "type": "http",
      "url": "https://mcp.mercury.com/mcp"
    }
  }
}
```

VS Code asks you to sign in the first time the server starts.

### Devin Desktop

1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows):

`mcp_config.json`:

```json
{
  "mcpServers": {
    "mercury": {
      "serverUrl": "https://mcp.mercury.com/mcp"
    }
  }
}
```

2. Refresh the MCP server list in Cascade and sign in when asked.

Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers.

### Codex

```bash
codex mcp add mercury --url https://mcp.mercury.com/mcp
codex mcp login mercury
```

Or edit `~/.codex/config.toml` directly:

`config.toml`:

```toml
[mcp_servers.mercury]
url = "https://mcp.mercury.com/mcp"
```

### Gemini CLI

```bash
gemini mcp add --transport http mercury https://mcp.mercury.com/mcp
```

Then, inside Gemini CLI, run `/mcp auth mercury` to sign in.

This adds it to the current project. Add `-s user` to use it everywhere.

### Any client

Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file.

```json
{
  "mcpServers": {
    "mercury": {
      "type": "http",
      "url": "https://mcp.mercury.com/mcp"
    }
  }
}
```

Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE.

Client only starts local servers? Bridge it with `npx -y mcp-remote https://mcp.mercury.com/mcp`.

## Details

- Last checked: 2026-10-03 (reachable, asks for credentials)
- Listed: 2026-10-03
- Updated: 2026-10-03

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Source: https://mcp.tc/i/mercury (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report