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Nylon AI connector
Cited federal tax research in your AI assistant
Nylon’s AI connector gives Claude, ChatGPT and Microsoft Copilot access to Nylon’s library of US federal tax law: the Internal Revenue Code, Treasury Regulations, IRS guidance and U.S. Tax Court opinions. Your assistant searches and reads the sources, then cites each one with a link you can check. It’s included with Nylon Adviser and Elite seats.
Your AI assistant
Nylon connected
Using Nylon, how long does a US business have to keep its tax records?
Searched Nylon’s library
Read 2 documents
A business must keep its books and records for as long as their contents may become material in the administration of any internal revenue law [1]. At a minimum, that generally means until the assessment period for the return closes, usually 3 years after the return was filed [2].
1
Treas. Reg. § 1.6001-1(e)
Nylon
2
IRC § 6501(a)
Nylon
Illustrative example
Choose your AI assistant
Every assistant connects to the same Nylon URL. Pick yours for step-by-step setup.
Claude
Add Nylon as a custom connector on any Claude plan, including Free. It works on the web, desktop and mobile.
Nylon for Claude
ChatGPT
Install Nylon from ChatGPT’s plugin directory, or add it by URL. Your plan and workspace settings decide whether you can.
Nylon for ChatGPT
Microsoft Copilot
One person adds Nylon to a Copilot Studio agent and shares it. Colleagues then use it in Microsoft 365 Copilot.
Nylon for Microsoft Copilot
Claude Code, Gemini CLI and developers
Add the URL with one command and sign in to Nylon. Guides, tools and error codes are in the developer docs.
Developer docs ↗
Connector URL
The first time you connect, you sign in to Nylon and choose Allow access.
What you can ask with Nylon
Start your question with “Using Nylon” and your assistant will search Nylon’s library before it answers.
Exempt organizations · UBIT
“Using Nylon, when is a tax-exempt organization’s business income subject to unrelated business income tax? Cite IRC §§ 511–513.”
Depreciation · Section 179
“Using Nylon, what is the Section 179 expensing limit for property placed in service in 2026, and when does the phase-out start?”
Individuals · Home office
“Using Nylon, when can a self-employed client deduct a home office under IRC § 280A, and how does the simplified method work?”
S corporations · Compensation
“Using Nylon, how do courts decide whether an S corporation shareholder-employee’s salary is reasonable compensation? Cite Tax Court opinions.”
Real estate · Section 1031
“Using Nylon, how do the 45-day identification period and 180-day exchange period work in a deferred like-kind exchange? Cite IRC § 1031(a)(3) and Treas. Reg. § 1.1031(k)-1.”
Individuals · Estimated tax
“Using Nylon, when does the 110% prior-year safe harbor apply to an individual’s estimated tax payments? Cite IRC § 6654(d).”
How Nylon works inside your AI assistant
01
You ask your assistant
Start your question with “Using Nylon”, or pick Nylon from your assistant’s tools.
02
It searches Nylon
Your assistant runs keyword and meaning-based searches across the Internal Revenue Code, Treasury Regulations, IRS guidance and Tax Court opinions in Nylon.
03
It reads and cites
Your assistant opens the documents it needs, answers from their text and links every citation to the source in Nylon.
An AI assistant on its own vs with Nylon
Where answers come from
Its training data and, if it’s switched on, web search
Nylon’s library of the Internal Revenue Code, Treasury Regulations, IRS guidance and Tax Court opinions
Citations
Can be missing, general or hard to check
Each citation links to the document in Nylon
What it reads
Snippets of web pages
The text of the Code section, regulation, ruling or opinion itself
Who controls access
Your AI assistant account
Your Nylon sign-in, and your admin can switch connections off
What’s in Nylon’s library
Nylon covers US federal tax law. State and local tax law isn’t covered.
Code and regulations
The Internal Revenue Code and Treasury Regulations.
IRS guidance
IRS guidance, including Revenue Rulings, Revenue Procedures and Notices.
Tax Court opinions
Opinions of the U.S. Tax Court.
Read-only, and under your firm’s control
Nylon’s AI connector gives your assistant access to Nylon’s library, and nothing else in your account.
Read-only
Your assistant can search Nylon’s library and read documents. It can’t upload, edit or delete anything.
Your own sign-in
Each person connects with their own Nylon account. Your assistant never sees your Nylon password.
Private by design
Your assistant can’t see your Nylon chat history, folders or saved work, or change account, billing or team settings.
Admin control
Admins can turn off Allow AI tool connections for the whole organization at any time.
Baqir Hussein, FCCA · Founder & Director, Finex Chartered Certified Accountants
Nylon AI connector: frequently asked questions
Setup guides for each assistant are in the developer docs, or email support@usenylon.com.
What is Nylon’s AI connector?
A read-only MCP server that lets your AI assistant search and read Nylon’s library, and cite each source with a link. MCP (Model Context Protocol) is the open standard AI assistants use to connect to outside tools.
Which AI assistants work with Nylon?
Claude, ChatGPT, Microsoft 365 Copilot through a Copilot Studio agent, Claude Code and Gemini CLI. Another MCP client can connect once we add it: email support@usenylon.com.
Which Nylon plan do I need?
An Adviser or Elite seat, billed monthly per user with no minimum term. Starter seats don’t include the AI connector.
What can my assistant search in Nylon?
The Internal Revenue Code, Treasury Regulations, IRS guidance such as Revenue Rulings, Revenue Procedures and Notices, and U.S. Tax Court opinions. State tax law isn’t covered.
Can my assistant change anything in Nylon?
No. The connector is read-only. Your assistant can search and read documents, but it can’t upload, edit or delete anything, or see your chat history, folders or saved work. Each person signs in with their own Nylon account.
How is this different from asking my assistant directly?
On its own, an AI assistant answers from its training data and, if it’s switched on, the web. With Nylon, it searches a curated library of primary sources, reads the documents and links each citation to the source so you can check it.
Does the connector cost extra?
No. It’s included with Nylon Adviser and Elite seats and doesn’t use Pro credits. Your AI assistant’s own plan and any usage charges still apply.
How do I disconnect Nylon?
Remove Nylon from your assistant’s connectors or tools. A Nylon admin can also turn off Allow AI tool connections for the whole organization in Organization Settings → Connections.
Last updated October 31, 2026. Claude, ChatGPT and Microsoft 365 Copilot are trademarks of Anthropic, OpenAI and Microsoft. Nylon isn’t affiliated with or endorsed by them.