stmtforge 0.1.1

Parse credit card PDF statements from Indian banks (HDFC, ICICI, SBI, Axis, Kotak + 4 more) into structured data. Offline, privacy-first, with Streamlit dashboard.

StmtForge — Credit Card Statement Parser & Analyzer

Open-source, offline-first Python tool to parse credit card PDF statements from Indian banks into structured data.

Install · Quick Start · Supported Banks · Dashboard · Docs

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Why StmtForge?

Indian bank credit card statements are password-protected PDFs with inconsistent formats — making expense tracking painful. StmtForge solves this:

• Parse PDF statements from Indian banks (Currently implemented: HDFC, ICICI, SBI, Axis, Kotak, Yes, CSB, Federal, IDFC First)
• 100% offline — no data leaves your machine, no cloud APIs, no telemetry
• Hybrid extraction — deterministic regex parsers → table extraction → OCR → local LLM (Ollama)
• One command — pip install stmtforge and start analyzing your credit card spend

Built for anyone in India who wants to track credit card expenses without trusting third-party apps with their financial data.

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Dashboard Preview

StmtForge includes a Streamlit analytics dashboard with interactive charts, filters, and CSV export.

Analytics: total spend, monthly trends, category breakdown, top merchants, bank & card comparison, daily heatmap, drill-downs

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Key Features

Feature	Description
9 bank-specific parsers	Dedicated parsers for HDFC, ICICI, SBI, Axis, Kotak, Yes, CSB, Federal, IDFC First
PDF unlock & parse	Auto-decrypts password-protected statements (DOB, PAN, custom patterns)
Hybrid extraction pipeline	Deterministic → table → OCR → local LLM fallback chain
Local LLM via Ollama	Qwen / Mistral / Llama3 for unstructured statement parsing
Gmail auto-fetch	Read-only OAuth2 — downloads statement PDFs from Gmail automatically
Multi-card tracking	Track spend across multiple cards and banks
Auto-categorization	Rule-based merchant classification (Shopping, Food, Travel, EMI, etc.)
Transaction deduplication	Hash-based dedup with incremental processing
Streamlit dashboard	Interactive Plotly charts, sidebar filters, CSV export
Privacy-first design	PII redacted from logs, HMAC pseudonymization, DPDP-aligned
CLI interface	stmtforge run, stmtforge dashboard, stmtforge init

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Installation

From PyPI

pip install stmtforge

Optional extras:

pip install "stmtforge[gmail]"      # Gmail fetch support
pip install "stmtforge[ocr]"        # OCR fallback support
pip install "stmtforge[all]"        # Gmail + OCR extras

From Source

git clone https://github.com/madhav921/stmt-forge.git
cd stmt-forge
python -m venv .venv
.venv\Scripts\activate        # Windows
# source .venv/bin/activate   # macOS / Linux
pip install -e ".[dev]"             # developer tools only
pip install -e ".[dev,all]"         # developer tools + Gmail + OCR extras

Requirements

Requirement	Purpose
Python 3.11+	Runtime
Ollama (optional)	Local LLM for unstructured PDF parsing
Google Cloud project (optional)	Gmail API — not needed for manual PDF import
Tesseract OCR binary (optional)	Required by OCR fallback when stmtforge[ocr] is installed
qpdf (optional)	Fallback PDF decryption

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Quick Start

# 1. Set up project
mkdir ~/my-statements && cd ~/my-statements
stmtforge init          # creates config.yaml, .env.example, data/

# 2. Configure PDF passwords
cp .env.example .env    # then edit .env with your passwords

# 3. (Optional) Set up local LLM
ollama pull qwen2.5:3b

# 4. Run the pipeline
stmtforge run --local               # parse local PDFs
stmtforge run --full                 # Gmail fetch + parse
stmtforge run --folder path/to/pdfs  # specific folder

# 5. View insights
stmtforge dashboard

Manual PDF import: Drop PDFs into data/raw_pdfs/<bank>/ and run stmtforge run --local. No Gmail setup needed.

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Supported Banks

Bank	Parser	Card Detection
HDFC Bank	hdfc_parser	Swiggy, Tata Neu, Millennia, etc.
ICICI Bank	icici_parser	Amazon Pay, Coral, Platinum, etc.
SBI Card	sbi_parser	Cashback, Elite, SimplyCLICK, etc.
Axis Bank	axis_parser	Neo, Flipkart, Ace, etc.
Kotak Mahindra	kotak_parser	811, League Platinum, etc.
Yes Bank	yes_parser	Marquee, Prosperity, etc.
CSB Bank	csb_parser	Edge, etc.
Federal Bank	federal_parser	Signet, Scapia, etc.
IDFC First Bank	idfc_first_parser	First Select, Classic, WOW, etc.
Any other bank	generic_parser + LLM	Auto-detected

Statement formats change over time. Open an issue if a parser produces incorrect results.

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How It Works

PDF → Unlock → Bank Parser → Table Extraction → OCR → LLM → Validate → SQLite → Dashboard

1. PDF Unlock — Tries password combos (DOB, PAN, custom) via pikepdf
2. Bank Parser — Bank-specific regex parser extracts transactions directly
3. Fallback Chain — Table extraction (pdfplumber) → Layout text → OCR (Tesseract) → Local LLM (Ollama)
4. Validation — Date normalization, amount bounds, dedup, confidence scoring
5. Categorization — Rule-based merchant → category mapping
6. Storage — SQLite with transaction-level deduplication and incremental processing

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Privacy & Security

StmtForge is built around a local-first, zero-upload architecture.

Processing	100% local — no cloud, no external APIs
Storage	Local SQLite + local files only
Telemetry	None — no analytics, no phone-home
Log privacy	PII auto-redacted (emails, phones, PAN, card numbers)
PDF passwords	.env → memory only; never logged or stored in DB
Gmail	Optional, read-only OAuth2; revoke anytime at Google Permissions

See SECURITY.md for vulnerability reporting and full security policy.

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Configuration

stmtforge init creates a config.yaml with these sections:

Section	Purpose
gmail	Sender domains, search keywords, attachment filters
credit_cards	Your banks and card names
pdf_passwords	Password patterns (from .env)
parsers	Email/filename → bank mapping, card identifiers
categories	Merchant → category rules
database	SQLite path
llm	Ollama model, URL, temperature

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Adding a New Bank Parser

from stmtforge.parsers.base_parser import BaseParser, parse_date, parse_amount

class MyBankParser(BaseParser):
    BANK_NAME = "mybank"

    def parse(self, pdf_path):
        records = [...]  # Extract transactions
        return self._get_standard_df(records)

Register in src/stmtforge/parsers/registry.py and add mappings in config_template.yaml. See CONTRIBUTING.md for details.

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Project Structure

stmt-forge/
├── src/stmtforge/           # Package source
│   ├── cli.py               # CLI entry point
│   ├── run_pipeline.py      # Pipeline orchestrator
│   ├── hybrid_pipeline.py   # Hybrid extraction engine
│   ├── parsers/             # 9 bank parsers + generic + categorizer
│   ├── dashboard/           # Streamlit analytics app
│   ├── pdf_processing/      # PDF unlock & text extraction
│   ├── llm/                 # Ollama client & prompts
│   ├── gmail/               # Gmail OAuth & fetcher
│   ├── database/            # SQLite layer
│   ├── validator/           # Transaction validation
│   └── utils/               # Config, logging, privacy, hashing
├── tests/                   # Test suite
├── pyproject.toml           # Build config
└── README.md

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Contributing

Bug reports, new bank parsers, and code fixes welcome. See CONTRIBUTING.md.

License

MIT