ChatGPT Plugin

letX

Write and compile LaTeX

Brand: LetX

Category: Productivity
Primary Subcategory: Academic Writing & Citation Tools

Integration details

Description

letX is a collaborative LaTeX editor. This plugin connects ChatGPT to your letX account, so you can work on LaTeX documents from the conversation. - Find a starting point in letX's library of LaTeX templates: theses, journal and conference papers, CVs, posters, presentations and reports. - Create a letX project from a template, or from LaTeX written in the conversation. - Read and edit the files of your letX projects. When a file is replaced, its previous version stays in the project's history. - Compile a project, or a piece of LaTeX, to PDF on letX's TeX Live installation with pdfLaTeX, XeLaTeX or LuaLaTeX, and get the errors from the log with the file and line they point to, so they can be fixed. Your work stays in your letX account, where you can keep editing with a live preview and share the project with co-authors. The plugin reaches only the projects your letX account can open. You sign in with your letX account.

Integration type: Plugin
Verification status: Not applicable
Platform: ChatGPT
Category: Productivity
Primary Subcategory: Academic Writing & Citation Tools
Secondary Subcategories: None listed
Brand: LetX
Access: Account required
First tracked: 2026-10-31
Tool count: 13
Market: US

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Primary Subcategory

Competing in ChatGPT Academic Writing & Citation Tools

View Category

Listed in alphabetical order

Primary Subcategory

Academic Writing ToolkitComing soonGet notified

letXComing soonGet notified

ManulyxComing soonGet notified

Medeloop GrantsComing soonGet notified

PaperpalComing soonGet notified

Tools

13 tools agents can invoke

Compile LaTeX source to a PDF without choosing a project: the main .tex content plus optional extra .tex, .bib or .sty files. Use when the user wants a PDF of LaTeX that is in the conversation. Runs on letX's TeX Live installation and returns a PDF download link, and the LaTeX errors when there are any. Text files only, no images. The source is saved to the user's "AI Scratchpad" project, replacing the files of the same name from the previous call (earlier versions stay in that project's history).
compile_latex
Compile one of the user's letX projects. Use when the user wants a PDF of a project or wants to check that it builds. Returns a PDF link, and the LaTeX errors from the log when there are any.
compile_project
Create a new letX project from LaTeX files (main.tex required). Use when the user wants their document saved as a letX project they can open, share and keep editing. Returns the project id and an editor link.
create_project
Create a new letX project for the connected user from a template slug. Use when the user wants to start a document from a template. Returns the project id and a link that opens it in the letX editor.
create_project_from_template
Fetch one letX LaTeX template record by its id. A minimal fetch interface for clients that expect one; use when the full record of a template found by a search is needed.
fetch
Get one LaTeX template's full details by its slug: description, author, license, preview image, and its page on letx.app. Use when the user wants to know more about a specific template.
get_template
List all documents and uploaded assets (images, data files) in one of the user's letX projects, with their exact paths. Use when the user asks what a project contains or a file path is needed.
list_project_files
List the connected user's letX projects with their name, id and last update. Use when the user refers to their letX projects or a project id is needed.
list_projects
Read a document (e.g. main.tex, chapters/intro.tex, refs.bib) from one of the user's letX projects. Use when the user asks about a file in a project or wants it changed. Docs: https://letx.app/mcp/
read_project_file
Search letX's library of 1000+ free LaTeX templates (university theses, IEEE/ACM/Elsevier/Springer journal formats, CVs and resumes, posters, presentations, reports). Use when the user wants a LaTeX template or a starting point for a document. Returns matching templates with their slug, category and preview link.
search_templates
Search letX's public library of free LaTeX templates. Returns results with an id, title and URL. A minimal search interface for clients that expect one; use when the user is looking for a LaTeX template.
search
Set the TeX engine a project builds with: pdflatex, xelatex or lualatex. Documents that load fontspec, unicode-math, polyglossia or xeCJK (system fonts, non-Latin scripts) need xelatex or lualatex, and documents that use \directlua or luacode need lualatex. letX picks an engine when a project is created. Use when the user asks for a different engine or the document needs one.
set_project_compiler
Create or replace a document in one of the user's letX projects. If the path exists its content is replaced and the previous version is kept in letX's history, so the change can be undone; if it does not exist the file is created. Use when the user asks to change or add a file in a project. Docs: https://letx.app/mcp/
update_project_file

FAQs

letX ChatGPT Plugin FAQ

How the directory, categories and Discoverability Score work.

Read the methodology

How do I improve letX's ChatGPT Plugin discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are letX alternatives on ChatGPT?

As of 2026-11-02, letX competes with Academic Writing Toolkit, Manulyx, Medeloop Grants, Paperpal, Scholar Sidekick, SciDraft (Japanese), SciGrant, Self Plagiarism Checker and 2 more in ChatGPT Academic Writing & Citation Tools, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.