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Invoice Generator
by
Tomás Migone
· GitHub ↗
· v1.0.0
5137
Downloads
2
Stars
0
Active Installs
1
Versions
Install in OpenClaw
/install invoice-generator
Description
Generate professional PDF invoices from JSON data. Use when the user needs to create an invoice, billing document, or payment request with company/client details and line items.
Usage Guidance
Install only if you are comfortable running a local script that processes invoice data and writes PDFs to disk. Set INVOICE_DIR to a private folder, use deterministic installs, review or supply the missing assets/invoice.hbs template before relying on the skill, and keep Handlebars updated if security advisories apply.
Capability Analysis
Type: OpenClaw Skill
Name: invoice-generator
Version: 1.0.0
The OpenClaw skill 'invoice-generator' is classified as benign. The skill's purpose is to generate PDF invoices from JSON data, which it achieves by using `node` with `handlebars` for HTML templating, `jq` for JSON parsing and validation, and `weasyprint` for HTML-to-PDF conversion. All operations are local, involving reading JSON from stdin or local files and writing PDF output to a user-defined local directory (`INVOICE_DIR`). There is no evidence of data exfiltration, malicious execution (e.g., remote payload fetching, arbitrary code execution from untrusted input), persistence mechanisms, obfuscation, or prompt injection attempts in `SKILL.md` that would manipulate the agent into unintended actions. The dependencies listed in `package.json` and `package-lock.json` are standard for the stated functionality.
Capability Assessment
Purpose & Capability
The stated purpose matches the script: it reads invoice JSON, validates required fields, renders HTML with Handlebars, and converts it to a PDF with weasyprint. One coherence issue is that scripts/generate.sh references assets/invoice.hbs, but that template file is not present in the reviewed artifact, so the package may not run as-is or the missing template would need separate review.
Instruction Scope
Usage is user-directed through stdin, a local file path, or a named config under INVOICE_DIR; there are no instructions for automatic execution, background agents, account mutation, external posting, or prompt override behavior.
Install Mechanism
Setup uses npm install plus local binaries node, jq, and weasyprint. package.json uses a caret range for Handlebars while package-lock.json pins the resolved version and integrity, so the supply-chain concern is worth monitoring but not evidence of malicious behavior by itself.
Credentials
The INVOICE_DIR environment variable is proportionate for storing invoice configs and generated PDFs, but invoice data can include client addresses, tax IDs, and payment amounts, so users should choose a private dedicated directory.
Persistence & Privilege
Persistence is limited to creating configs and invoices directories and writing generated PDFs under the user-configured INVOICE_DIR; no elevated privileges, startup hooks, credential stores, or long-running workers are evidenced.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install invoice-generator - After installation, invoke the skill by name or use
/invoice-generator - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release: Generate PDF invoices from structured JSON.
- Converts invoice data in JSON format to professional PDF files.
- Supports multiple input methods: stdin, file path, or saved config.
- Stores generated invoices in a user-specified directory.
- Handles auto-versioning for duplicate filenames.
- Provides clear error handling for invalid input or PDF generation issues.
Metadata
Frequently Asked Questions
What is Invoice Generator?
Generate professional PDF invoices from JSON data. Use when the user needs to create an invoice, billing document, or payment request with company/client details and line items. It is an AI Agent Skill for Claude Code / OpenClaw, with 5137 downloads so far.
How do I install Invoice Generator?
Run "/install invoice-generator" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Invoice Generator free?
Yes, Invoice Generator is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Invoice Generator support?
Invoice Generator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Invoice Generator?
It is built and maintained by Tomás Migone (@tmigone); the current version is v1.0.0.
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