MCP.Market

BoomTax MCP server

online · 96% uptime
by boomtax·io.github.boomtax/mcp-server·v2.0.0
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Read-only BoomTax tools for filings, forms, payers, and e-file status through OAuth.

A98/100grade A
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Safety scan
A98/100

full report

Adoption
Growing

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

BoomTax tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 186ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenancelast push 4 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10
Overall 98/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How BoomTax compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
98/100
higher than 99% of 48,255 servers
Uptime
96%
of our recent checks; the typical remote server answers 100%
Response time
278 ms
faster than 51% of 30,031 servers

Install BoomTax in Claude Code, Cursor or VS Code

claude mcp add --transport http mcp-server https://api.boomtax.com/mcp
Add to Cursor

What the publisher says

From the BoomTax repository's README, as published. We do not edit it. Read it on GitHub

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

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 listfilingtypes 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:

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

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

BoomTax: common questions

Is BoomTax MCP server safe?
Yes, by our scan: it is graded A (98/100). Read the BoomTax safety report
How do I install BoomTax?
It runs remotely at api.boomtax.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does BoomTax need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is BoomTax maintained?
The last commit was 26 days ago (2026-10-09). The latest release is v2.0.0.
Is BoomTax up?
96% of our last 28 checks got an answer. We check remote servers about four times a day.
How does BoomTax compare with other MCP servers?
safety score 98/100 (higher than 99% of 48,255 servers); uptime 96% (of our recent checks; the typical remote server answers 100%); response time 278 ms (faster than 51% of 30,031 servers). Full comparison.