texguardian 0.1.2

Claude Code-style terminal chat app for LaTeX papers

AI-powered terminal assistant for LaTeX academic papers

Installation · Quick Start · Commands · Configuration · Project Structure

---

TexGuardian is a researcher-focused interactive CLI tool that helps you write, verify, and polish LaTeX academic papers for conference submission. Think of it as Claude Code, but for LaTeX — it reads your paper, understands venue requirements, and fixes issues through reviewable diff patches with checkpoint safety.

Whether you're preparing a NeurIPS submission, fixing figure overflows, anonymizing for double-blind review, or validating citations against real databases — TexGuardian handles the tedious parts so you can focus on the research.

Highlights

• Styled REPL — bordered welcome panel with paper stats, colored ❯ prompt
• 26 slash commands for every stage of paper preparation
• LLM-powered fixes — figures, tables, citations, sections, anonymization, camera-ready
• Instant verification — regex-based checks run directly on .tex files, no compilation needed
• Unified diff patches — every edit is reviewable, with checkpoints and rollback
• Visual polish loop — renders PDF, sends pages to vision model, fixes layout issues
• Natural language — ask for anything in plain English, the LLM figures out the rest
• Two providers — AWS Bedrock or OpenRouter, switch with one command

Installation

From PyPI (recommended)

pip install texguardian

From source

git clone https://github.com/arcAman07/TexGuardian.git
cd TexGuardian
pip install -e ".[dev]"

External tools

TexGuardian needs LaTeX and Poppler installed on your system for compilation and visual checks:

Tool	Purpose	Install
Python 3.11+	Runtime	python.org
LaTeX (latexmk)	Compilation	brew install --cask mactex-no-gui or TinyTeX
Poppler	PDF rendering for visual checks	brew install poppler

Verify installation

texguardian doctor

TexGuardian Doctor

Checking external tools...

  ✓ latexmk      /usr/local/bin/latexmk
  ✓ pdflatex     /usr/local/bin/pdflatex
  ✓ pdfinfo      /usr/local/bin/pdfinfo
  ✓ pdftoppm     /usr/local/bin/pdftoppm

All tools found. You're good to go!

Quick Start

1. Initialize your project

cd /path/to/your/latex/paper
texguardian init

This creates three files:

File	Purpose
texguardian.yaml	LLM provider, model, safety limits, LaTeX settings
paper_spec.md	Venue, deadline, thresholds, custom checks, system prompt
.texguardian/	Runtime data (checkpoints, history)

2. Configure credentials

AWS Bedrock (recommended):

# Create a .env file in your project root:
AWS_ACCESS_KEY_ID=your-key
AWS_SECRET_ACCESS_KEY=your-secret
AWS_REGION=us-east-1

OpenRouter:

# In texguardian.yaml:
providers:
  default: "openrouter"
  openrouter:
    api_key: "sk-or-..."  # Get from https://openrouter.ai/keys

3. Start chatting

texguardian chat

On startup you'll see a styled welcome panel with paper stats:

╭──────────────────────────────────────────────────────────╮
│  TexGuardian                                             │
│                                                          │
│  Paper  Scaling Sparse MoE for Long-Context Doc...       │
│  Venue  NeurIPS 2026          Deadline  2026-05-15       │
│  Model  claude opus 4.5       Provider  bedrock          │
│  File   demo_paper.tex        Figures 4 · Tables 3       │
│                                                          │
│  Type /help for commands or ask a question.              │
╰──────────────────────────────────────────────────────────╯

❯ _

Then interact with commands or plain English:

❯ /figures fix
Figure Pipeline

Step 1: Verifying Figures
  Found 4 figures, 3 issues detected

Step 2: LLM Fix
  Analyzing figure issues...

  ✓ Generated 3 patches:
    1. demo_paper.tex (+1/-1) — width=1.3\columnwidth → width=\columnwidth
    2. demo_paper.tex (+1/-1) — width=1.8\textwidth → width=\columnwidth
    3. demo_paper.tex (+1/-1) — width=2.0\columnwidth → width=\columnwidth

  [A]pply all | [R]eview | [N]o: a
  ✓ Checkpoint created
  ✓ All patches applied

❯ The tables use \hline — please fix them to use booktabs

Commands

Paper Analysis

Command	Aliases	Description
/verify	/v, /check	Run all verification checks (figures, citations, custom rules)
/figures [verify|fix]	/figs, /fig	Verify and fix all figures
/tables [verify|fix]	/t	Verify and fix all tables
/citations [verify|fix]	/cite, /refs	Verify, validate (CrossRef/S2), and fix citations
/section <name> [fix]	/sec	Deep analysis of a specific section
/page_count	/pages, /pc	Page count with section breakdown and limit check
/feedback	/review_full	Comprehensive paper review with scoring
/suggest_refs	/suggest_citations	AI-powered citation recommendations

Paper Preparation

Command	Aliases	Description
/anonymize	/anon, /blind	Make paper anonymous for double-blind review
/camera_ready	/cr, /final	Convert draft to camera-ready version
/venue <name> [year]	/templates, /style	Download conference LaTeX templates
/compile	/c, /build	Compile LaTeX document with latexmk
/review	/full, /pipeline	Full pipeline: compile -> verify -> fix -> repeat
/polish_visual	/pv, /visual	Visual verification with vision model

Configuration

Command	Aliases	Description
/model	/m	Show current model configuration
/model list		List all available models
/model set <name>		Change the LLM model
/model search <query>		Search for models by name

File Operations

Command	Aliases	Description
/read <file>	/cat	Display file contents
/write <file>	—	Write content to a file
/grep <pattern>	/g	Search for pattern in files
/search <pattern>	/find, /ls	Find files by name
/bash <cmd>	/sh, /!	Run a shell command

Version Control

Command	Aliases	Description
/diff	/d	Show changes since last checkpoint
/revert	/undo, /rollback	Revert to a previous checkpoint
/approve	/apply, /a	Apply pending patches
/watch	/w	Toggle auto-recompile on file changes

Other

Command	Aliases	Description
/help	/h, /?	Show all available commands
/report	/r	Generate a comprehensive verification report

Natural Language

You can also just type in plain English. TexGuardian will understand:

❯ The figure on line 44 has width=1.3\columnwidth which causes overflow. Please fix it.
❯ Please make this paper anonymous for double-blind review
❯ Can you suggest more citations for the related work section?

The /venue and /model commands also accept natural language:

❯ /venue please download the neurips 2026 style files
❯ /model we need to switch to claude sonnet 4 on bedrock

Configuration

texguardian.yaml

project:
  main_tex: "main.tex"          # Your main .tex file
  output_dir: "build"           # Output directory for PDF

providers:
  default: "bedrock"            # "bedrock" or "openrouter"
  bedrock:
    region: "us-east-1"
    # Credentials loaded from .env automatically
  openrouter:
    api_key: "sk-or-..."
    base_url: "https://openrouter.ai/api/v1"

models:
  default: "claude opus 4.5"    # Main model for analysis and fixes
  vision: "claude opus 4.5"     # Vision model for visual polish

safety:
  max_changed_lines: 50         # Max lines per patch
  max_rounds: 10                # Max auto-fix iterations
  max_visual_rounds: 5          # Max visual verification loops
  allowlist:                    # Files the LLM can modify
    - "*.tex"
    - "*.bib"
    - "*.sty"
    - "*.cls"
  denylist:                     # Files the LLM cannot touch
    - ".git/**"
    - "*.pdf"
    - "build/**"

latex:
  compiler: "latexmk"           # Build tool
  engine: "pdflatex"            # TeX engine
  shell_escape: false           # Enable --shell-escape
  timeout: 240                  # Compilation timeout (seconds)

visual:
  dpi: 150                      # PDF render resolution
  diff_threshold: 5.0           # Convergence threshold (%)
  pixel_threshold: 15           # Per-pixel diff threshold (0-255)
  max_pages_to_analyze: 0       # 0 = all pages

paper_spec.md

The paper spec defines venue-specific rules, custom checks, and your system prompt:

---
title: "Your Paper Title"
venue: "NeurIPS 2026"
deadline: "2026-05-15"
thresholds:
  max_pages: 9
  min_references: 30
  max_self_citation_ratio: 0.2
human_review:
  - "Changes to abstract"
  - "Deletion of more than 10 lines"
---

## Custom Checks

```check
name: citation_format
severity: warning
pattern: "\\cite\\{(?!p|t)"
message: "Use \\citep{} or \\citet{} instead of \\cite{}"
```

```check
name: todo_remaining
severity: error
pattern: "TODO|FIXME|XXX"
message: "Remove TODO/FIXME markers before submission"
```

## System Prompt

```system-prompt
You are an expert academic writing assistant specializing in machine learning.
Use formal academic English. Every claim must be backed by evidence.
```

Environment Variables

Variable	Default	Description
AWS_ACCESS_KEY_ID	—	AWS access key for Bedrock
AWS_SECRET_ACCESS_KEY	—	AWS secret key for Bedrock
AWS_REGION	us-east-1	AWS region
TEXGUARDIAN_MAX_CONTEXT_TOKENS	100000	Max conversation context tokens
TEXGUARDIAN_SUMMARY_THRESHOLD	80000	Token threshold for auto-compaction
TEXGUARDIAN_MAX_OUTPUT_TOKENS	32000	Max LLM output tokens
TEXGUARDIAN_MAX_THINKING_TOKENS	16000	Max thinking/reasoning tokens

Available Models

AWS Bedrock

Friendly Name	Model ID
claude opus 4.5	us.anthropic.claude-opus-4-5-20251101-v1:0
claude opus 4	us.anthropic.claude-opus-4-20250514-v1:0
claude sonnet 4	us.anthropic.claude-sonnet-4-20250514-v1:0
claude-3.7-sonnet	us.anthropic.claude-3-7-sonnet-20250219-v1:0

OpenRouter

Friendly Name	Model ID
claude opus 4.5	anthropic/claude-opus-4.5
claude opus 4	anthropic/claude-opus-4
claude sonnet 4	anthropic/claude-sonnet-4
gpt-4o	openai/gpt-4o

Plus any model from openrouter.ai/models.

Architecture

User Input
    │
    ├─ /command args ──────> CommandRegistry.get_command()
    │                              │
    │                         Command.execute()
    │                              │
    │                    ┌─────────┴──────────┐
    │                    │                    │
    │               Verify Only          LLM Pipeline
    │               (parse .tex,         (build prompt →
    │                run checks)          stream_llm() →
    │                    │                extract patches →
    │                    │                interactive_approval())
    │                    │                    │
    │                    └─────────┬──────────┘
    │                              │
    │                    Show results / Apply patches
    │                    Create checkpoint
    │
    └─ natural language ──> ConversationContext
                                   │
                              build_chat_system_prompt()
                                   │
                              stream_llm()
                                   │
                              Extract patches if any
                              Offer to apply

Safety Guarantees

• Allowlist/Denylist: Only whitelisted file types can be modified
• Max changed lines: Patches exceeding the limit are rejected
• Checkpoints: Created before every patch application
• Human review markers: Changes to abstract, large deletions flagged
• Max iterations: Auto-fix loops capped to prevent runaway
• Rollback: /revert restores any checkpoint instantly

Visual Verification Pipeline

The /polish_visual command renders your PDF and sends pages to a vision model:

.tex ──> latexmk ──> .pdf ──> pdftoppm ──> .png ──> Vision LLM ──> patches
                                             │
                                    Pixel diff with previous ──> converged?
                                             │
                                    Loop until visual quality stable

This catches layout issues that text-only analysis misses: overlapping figures, bad spacing, misaligned columns, orphaned headers.

Development

# Run tests
pytest tests/ -v

# Run tests with coverage
pytest tests/ --cov=texguardian --cov-report=term-missing

# Lint
ruff check src/

# Type check
mypy src/texguardian

See docs/STRUCTURE.md for the full project layout.

License

MIT License. See LICENSE for details.