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Mortgage Calculator
by
BytesAgain2
· GitHub ↗
· v2.0.1
· MIT-0
537
Downloads
0
Stars
2
Active Installs
13
Versions
Install in OpenClaw
/install mortgage-calculator
Description
Calculate mortgage payments with equal-principal and equal-interest comparisons. Use when comparing loans, calculating payments, evaluating prepayment.
Usage Guidance
This skill appears to do what it says: mortgage calculations and simple local logging. Before installing, note: (1) it requires a Bash-compatible shell and python3 at runtime even though the registry did not list required binaries — ensure your environment has python3 and Bash 4+; (2) it will create ~/.local/share/mortgage-calculator/ (unless you set MORTGAGE_CALCULATOR_DIR) and write data.log and history.log there, which may contain sensitive financial notes you enter; (3) there are no network calls or secret exfiltration in the provided scripts, but you should still review the bundled scripts and decide whether you want the local logs to exist on the host or redirect them to a different directory. If you plan to automate or share the machine, consider setting MORTGAGE_CALCULATOR_DIR to a controlled location or audit the files before running.
Capability Analysis
Type: OpenClaw Skill
Name: mortgage-calculator
Version: 2.0.1
The mortgage-calculator bundle is a legitimate financial utility for calculating loan payments and maintaining local records. The scripts (mortgage.sh and script.sh) perform standard mathematical calculations and local file I/O for logging purposes without any network activity, credential access, or obfuscated code. No evidence of malicious intent or prompt injection was found.
Capability Assessment
Purpose & Capability
The skill's name/description (mortgage calculations, comparisons, prepayment) match the included scripts and SKILL.md. Minor inconsistency: SKILL.md and the scripts require Bash and python3, but the registry metadata lists no required binaries; the code embeds a Python calculator and shell glue, so python3 and a POSIX shell (Bash 4+) are actually needed.
Instruction Scope
SKILL.md instructs use of a local CLI and describes commands that read/write local files under the data directory, list/search logs, and print results to stdout. The scripts only operate on files in the configured data directory and stdout/stderr, and do not access network endpoints or unrelated system paths.
Install Mechanism
No install spec or remote downloads are present; this is instruction-only with bundled scripts. No network downloads or archive extraction are performed by the skill itself.
Credentials
No credentials or secrets are requested. The only environment configurables are MORTGAGE_CALCULATOR_DIR and standard XDG_DATA_HOME; these are reasonable for changing the local data path.
Persistence & Privilege
The skill writes persistent data to a directory in the user's home (~/.local/share/mortgage-calculator by default), creating data.log and history.log. This is expected for a logging tool, but users should be aware it keeps a local audit/history of commands and entries.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install mortgage-calculator - After installation, invoke the skill by name or use
/mortgage-calculator - Provide required inputs per the skill's parameter spec and get structured output
Version History
v2.0.1
update
v2.0.0
v2.5 standard: Use-when desc, homepage, source, security fix
v2.3.4
yaml-fix+quality
v2.3.3
yaml-fix+quality
v2.3.2
Quality upgrade
v2.3.1
Quality upgrade: custom functionality
v2.3.0
Quality fixes: removed third-party references, aligned docs with implementation
v2.2.0
Enhanced descriptions for better AI triggering
v1.0.2
Runtime fix
v1.0.1
Add runtime declaration + security compliance
v1.1.1
Brand: [email protected]
v1.1.0
Pain-point upgrade: new commands solving real user problems, tips.md reference doc.
v1.0.0
Initial release with Chinese SEO keywords.
Metadata
Frequently Asked Questions
What is Mortgage Calculator?
Calculate mortgage payments with equal-principal and equal-interest comparisons. Use when comparing loans, calculating payments, evaluating prepayment. It is an AI Agent Skill for Claude Code / OpenClaw, with 537 downloads so far.
How do I install Mortgage Calculator?
Run "/install mortgage-calculator" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Mortgage Calculator free?
Yes, Mortgage Calculator is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Mortgage Calculator support?
Mortgage Calculator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Mortgage Calculator?
It is built and maintained by BytesAgain2 (@ckchzh); the current version is v2.0.1.
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