MCP server

Markdown Open in Claude Open in ChatGPT

The MCP server gives an agent every API endpoint as a tool, along with instructions for handling a filing. Connect it and ask something like "form an LLC in Wyoming" or "can I trademark Quillbrook for candles?".

Address: https://mcp.joinopenfile.com. It uses Streamable HTTP and needs no key.

Connect

Claude Code

claude mcp add --transport http openfile https://mcp.joinopenfile.com

Claude: add a custom connector with the address above.

Cursor: add this to .cursor/mcp.json.

{
  "mcpServers": {
    "openfile": { "url": "https://mcp.joinopenfile.com" }
  }
}

Setup for each client has the steps for each one: Claude, Claude Code, Cursor, VS Code, Codex, Windsurf, Gemini CLI, Cline, Zed, n8n, Zapier, LangChain, Vercel AI SDK, OpenAI Agents SDK.

Other clients: use the address above with the Streamable HTTP transport. Servers that find tools by domain can read /.well-known/mcp.json.

How an agent files

plan_task returns the questions for the job, so the agent asks the owner instead of guessing.
For a company, get_state and quote_formation show the rules and fees. For a trademark, screen_mark and search_marks check the name.
create_formation or create_application saves a draft and lists what's missing in issues.
The agent sends the owner review_url. The owner signs. The agent can't.
get_formation or get_application shows the order or filing once they've signed.

The form_company and file_trademark prompts walk an agent through all of it. Form a company and Prepare an application have the details.

Tools

Tool	What it does	Changes anything
`search_docs`	Searches OpenFile's docs and returns the best sections with a link to each.	No
`read_doc`	One docs page as Markdown, by its slug.	No
`plan_task`	The questions behind anything a person does here, with the options for each, the rules, and what only the person can do: form a company, check on an order, add-ons, file a trademark, check a name, check on a filing, office action replies, statements of use, extensions, Section 8 and 15, renewals, assignments, owner updates.	No
`get_pricing`	Formation packages, the trademark package, and USPTO fees.	No
`quote_application`	Every fee for a number of classes, with the government's marked.	No
`list_classes`	The Nice classes small businesses file in most, with ID Manual style wording.	No
`suggest_classes`	Classes and goods and services wording from a plain description of the business.	No
`screen_mark`	Checks a mark against common refusal grounds: descriptive, generic, surname, place name, famous brand.	No
`search_marks`	Searches live USPTO records for marks with this name, or lists an owner's marks.	No
`suggest_alternatives`	Names that keep the idea of a risky mark.	No
`check_site`	From a website or app store link: the brand, its legal owner, and which USPTO marks are theirs or someone else's.	No
`read_site`	What a website says about its owner, address and what's sold, each with the quote it came from.	No
`list_filing_types`	Everything that can be filed for a mark, with when it's due, what it costs for one class, and whether it can be started here.	No
`get_filing_type`	One filing with its explanation, the fields it needs and its fees for a number of classes.	No
`create_application`	Saves a draft trademark application and returns review_url for the owner, who checks it and signs.	Yes
`get_application`	A draft, what's still missing, and the filing once the owner has signed.	No
`update_application`	Changes the fields you send on a draft.	Yes
`list_states`	Every state with its LLC and corporation filing fees.	No
`get_state`	One state's filing fees, annual report, accepted company name endings and publication rules.	No
`list_services`	Every add-on with its price, whether it can go on a formation, and whether the owner orders it from their dashboard.	No
`quote_formation`	Every fee for a formation, with the state's marked.	No
`create_formation`	Saves a draft company formation and returns review_url for the owner, who checks it and signs the authorization.	Yes
`get_formation`	A draft formation, what's still missing, and the order once the owner has signed.	No
`update_formation`	Changes the fields you send on a draft formation.	Yes
`get_order`	A signed formation's status, what the owner still has to do, and the state file number once formed.	No
`get_filing`	A signed application's status, the attorney's note if there is one, and its USPTO serial number once filed.	No
`add_specimen`	Adds or replaces the image showing the mark in use, until the attorney has filed.	Yes

Tools that change something only save a draft or add a specimen to a filing. None of them files anything with a state or the USPTO, sends anything to the attorney, or charges anyone.

Prompts

Prompt	What it does
`form_company`	Prepare a company formation with the owner, from picking the state to sending them the link to sign.
`file_trademark`	Prepare a trademark application with the owner, from checking the name to sending them the link to sign.
`check_trademark`	Check whether a name is likely to be refused and who already owns it.

Tokens

The API has no accounts or keys yet, so there's no sign-in. A tool that reads one formation, order, application or filing takes that one's token as an input. See Authentication.

Common questions

Does it need a key or an account?

No. Lookups are public with limits per IP. Each draft has its own token, returned when it's created.

Can an agent file something by itself?

No. Tools save drafts and read status. Nothing reaches a state or the USPTO until the owner signs at review_url.

What does it cost?

The server is free. The owner pays the same as on the site, and only for what they file.

No. The API refuses one, and the owner gives it on our secure page.

Next: Form a company