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BoomTax

by boomtaxversion 2.0.0i★ –iRuns in the cloud
Registry nameio.github.boomtax/mcp-server

Install

Overview

Description from the maker (original English)

Read-only BoomTax tools for filings, forms, payers, and e-file status through OAuth.

PopNx MCP’s three pillars

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

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.

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

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://api.boomtax.com/mcp

Run this in your terminal

claude mcp add --transport http boomtax https://api.boomtax.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "boomtax": {
      "url": "https://api.boomtax.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": {
    "boomtax": {
      "type": "http",
      "url": "https://api.boomtax.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:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://api.boomtax.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 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account boomtax, 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 Otheri

  • More stars than 0% of the other 32742 servers in this category
  • Published to the registry more recently than 58% of the other 32742 servers in this category
  • Basic checks equal to or better than 100% of the other 32742 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 BoomTax 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 (2.0.0) reached the registry 29 days 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: Spec Driven Development, Remote Desktop Commander, Asset Notation

Alternatives

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

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

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago
Install

Asset Notation

by assetnotation

Read and maintain an Asset Notation file on disk: net worth, holdings, valuations, CSV import.

Runs on your computerUpdated today
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.

BoomTax MCP Server

Read-only BoomTax filing tools for Claude, ChatGPT, Codex, Cursor, Windsurf, VS Code Copilot, and other Model Context Protocol clients.

The hosted endpoint is https://api.boomtax.com/mcp, using Streamable HTTP and OAuth. API access must be enabled on your BoomTax account; contact support@boomtax.com if needed.

Release status (October 9, 2026): the hosted API update is deployed, and the remote server is published in the official MCP Registry as io.github.boomtax/mcp-server, version 2.0.0. The npm 2.0.0 client is not yet published; npm 1.0.0 uses legacy password authentication. Use the remote connection or run the local client from this source tree. See release validation for client verification and remaining publication work.

Tools

ToolDescription
list_filingsFilter filings by year, form type, and status; includes filing system
get_filing_detailsFiling details, payer summary, and e-file status
get_filing_summaryCounts by status and form type
list_filing_formsPaginated form metadata within a filing
get_formForm metadata, status, and dates
get_efile_statusE-file request and response timeline
get_efile_errorsE-file errors and messages
list_payersPayers across accessible filings
get_payerPayer details, including a masked payer TIN
list_filing_typesAvailable filing types, tax years, and filing systems

These tools cannot create, edit, delete, or submit filings. The local client forwards these ten tools to the hosted service and blocks other tool names. Use list_filing_types for current form availability, rather than a static list that can go stale each tax year.

Setup

Remote connection (recommended)

Use https://api.boomtax.com/mcp in a client that supports Streamable HTTP and OAuth with PKCE. Complete the browser sign-in when prompted. OAuth client registration uses Dynamic Client Registration (DCR); choose automatic registration if your client offers a choice between DCR and a published client identity. Client ID Metadata Documents (CIMD) are not currently supported.

Discovery endpoints:

  • https://api.boomtax.com/.well-known/oauth-protected-resource
  • https://api.boomtax.com/.well-known/oauth-authorization-server

A 401 response when opening /mcp without authentication is expected. It includes a WWW-Authenticate discovery header. A bare URL in a browser is not an authenticated connection test.

Local client (version 2)

Requires Node.js 22 or newer. Create a read-scoped API credential at BoomTax API credentials. Supply the values through your client's secret storage or environment:

VariableRequiredPurpose
BOOMTAX_CLIENT_IDYesAPI credential client ID
BOOMTAX_CLIENT_SECRETYesAPI credential secret
BOOMTAX_API_URLNoDefaults to https://api.boomtax.com; specify an origin, not /mcp

The client obtains short-lived OAuth tokens and authenticates again when a token expires. It does not use an account email/password. HTTP is allowed only for loopback development servers; other origins require HTTPS.

Run the source version after setting those environment variables:

git clone https://github.com/boomtax/mcp-server.git

cd mcp-server npm ci node index.js

After the 2.0.0 release is published, the equivalent package command is:

npx -y @boomtax/mcp-server@2.0.0

On Windows, clients that cannot spawn npx directly can use cmd /c npx -y @boomtax/mcp-server@2.0.0, or invoke the installed client with node and an absolute path to index.js.

Configuration by AI client

Claude Desktop and Claude web

For a remote connection, open Connectors, add a custom connector, and enter https://api.boomtax.com/mcp. Choose automatic OAuth client registration and complete sign-in. Organization accounts may require an administrator to add the connector first. Remote connectors are configured through the connector UI, not a URL-only entry in claude_desktop_config.json.

For a local source install in Claude Desktop, use an absolute path and inject the two credential environment variables securely:

{

"mcpServers": { "boomtax": { "command": "node", "args": ["/absolute/path/to/mcp-server/index.js"], "env": { "BOOMTAX_CLIENT_ID": "YOUR_READ_SCOPED_CLIENT_ID", "BOOMTAX_CLIENT_SECRET": "YOUR_CLIENT_SECRET" } } } }

Keep files containing secrets outside source control. Windows paths in JSON need doubled backslashes or forward slashes.

Claude Code
claude mcp add boomtax --transport http https://api.boomtax.com/mcp

Use /mcp in Claude Code to complete authentication.

ChatGPT

In a workspace that permits custom MCP connections, add a custom connector or plugin with URL https://api.boomtax.com/mcp, choose OAuth and automatic client registration, then complete sign-in. The exact UI and availability depend on your workspace controls. If asked for a pre-registered OAuth client instead, contact BoomTax support; a machine-to-machine API credential is not an authorization-code client registration.

Codex
codex mcp add boomtax --url https://api.boomtax.com/mcp

codex mcp login boomtax

Codex uses the hosted server's OAuth discovery metadata. A local stdio client can also run node with the source path above and inherit BOOMTAX_CLIENT_ID and BOOMTAX_CLIENT_SECRET from its environment.

Cursor and Windsurf

Add this remote server to your client's MCP configuration, then complete OAuth sign-in:

{

"mcpServers": { "boomtax": { "url": "https://api.boomtax.com/mcp" } } }

Cursor uses .cursor/mcp.json. In Windsurf or Devin Desktop, use the MCP settings' Open MCP config file action to select the configuration for your installed version. If a client version does not support OAuth for remote servers, use the local source configuration instead.

VS Code / GitHub Copilot

Add to .vscode/mcp.json:

{

"servers": { "boomtax": { "type": "http", "url": "https://api.boomtax.com/mcp" } } }

Start the server from VS Code's MCP controls and complete OAuth sign-in. This configuration contains no account secrets.

Example prompts

  • "What filings do I have for tax year 2025?"
  • "Summarize my filings by status."
  • "What is the e-file status of this filing?"
  • "Show errors on my 1099-NEC filing."
  • "Which filing types and tax years are available?"

Security and troubleshooting

  • Data access is scoped to the authenticated account and its filing permissions.
  • Structured payer TIN fields are masked by the hosted service. Results still contain confidential names, contact details, and filing information; share them only with authorized assistants.
  • Use a separate read-scoped API credential per local integration, and revoke it in BoomTax when no longer needed.
  • Credentials are kept in memory by the local client. It pins OAuth discovery to the configured API issuer and does not log upstream error bodies or credentials.
  • A local startup failure usually means missing client credentials, disabled API access, or an unreachable API. Do not supply BOOMTAX_API_USERNAME / BOOMTAX_API_PASSWORD; these version 1 settings are obsolete.
  • An invalid_redirect_uri registration error requires a supported callback host or a support-assisted registration. Never work around it by sending credentials to another host.
  • Directory health checks need an authorized test connection. A missing test profile can produce an unhealthy badge even when OAuth discovery is reachable.

Development

npm ci

npm test npm run check npm pack --dry-run

Tests use a loopback OAuth/MCP fixture and synthetic data, including a real stdio client process. They do not connect to customer accounts. See release and directory maintenance for publication prerequisites and verification.

License

The local client source in this repository is MIT licensed. Access to the hosted BoomTax service remains subject to BoomTax's service terms and account permissions.

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