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Hashcheck
by
rogue-agent1
· GitHub ↗
· v1.0.0
· MIT-0
120
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Install in OpenClaw
/install hashcheck
Description
Calculate, verify, and compare file hashes using MD5, SHA-1, SHA-256, SHA-512, and BLAKE2b. Use when asked to checksum a file, verify a download hash, compar...
README (SKILL.md)
hashcheck 🔒
File hash calculator, verifier, and comparator.
Commands
# Calculate SHA-256 (default)
python3 scripts/hashcheck.py hash file.zip
# Specific algorithm
python3 scripts/hashcheck.py hash -a md5 file.iso
# Verify against expected hash
python3 scripts/hashcheck.py verify file.zip abc123def456...
# Compare two files
python3 scripts/hashcheck.py compare file1.txt file2.txt
# Hash a text string
python3 scripts/hashcheck.py text "hello world"
# Show all algorithms at once
python3 scripts/hashcheck.py all file.bin
Algorithms
MD5, SHA-1, SHA-256, SHA-512, BLAKE2b
Usage Guidance
This skill appears to be what it says: a local file hash/verify tool implemented with Python's standard hashlib. You can inspect the included scripts (they are short and readable) before running. Note: MD5 and SHA-1 are cryptographically weak for collision resistance—prefer SHA-256, SHA-512, or BLAKE2b when verifying authenticity. Because it reads files you provide, avoid pointing it at sensitive files unless you trust the environment. The duplicate file under scripts/ is benign (identical content) but you may want to keep only one copy to avoid confusion.
Capability Analysis
Type: OpenClaw Skill
Name: hashcheck
Version: 1.0.0
The hashcheck skill is a standard utility for calculating and verifying file checksums (MD5, SHA-256, etc.) using the Python standard library. The code in hashcheck.py and scripts/hashcheck.py is transparent, lacks external dependencies, and contains no evidence of data exfiltration, unauthorized execution, or malicious prompt injection.
Capability Assessment
Purpose & Capability
Name/description (file hashing, verification, comparison) matches the provided code and SKILL.md. The skill does not request unrelated binaries, credentials, or config paths. Duplicate files (top-level and scripts/) are present but both contain the same hashing logic.
Instruction Scope
SKILL.md instructs the agent to run the included Python script on user-specified files and strings. The code only reads files provided as arguments, computes hashes, and prints results; it does not access other system files, environment variables, network endpoints, or perform unexpected actions.
Install Mechanism
There is no install spec (instruction-only). The included Python scripts have zero external dependencies and use only the standard library, so no downloads or installs are required.
Credentials
The skill declares no required environment variables or credentials and the code does not read env vars or secrets. No disproportionate access to system credentials or other services is requested.
Persistence & Privilege
always:false and default autonomous invocation settings are used. The skill does not request permanent presence or modify other skills/configs. Default autonomous invocation is normal and not, by itself, a red flag here.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install hashcheck - After installation, invoke the skill by name or use
/hashcheck - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of hashcheck.
- Calculate, verify, and compare file hashes using MD5, SHA-1, SHA-256, SHA-512, and BLAKE2b.
- Supports hashing of both files and text strings.
- Offers commands for hash calculation, hash verification, and file comparison.
- Outputs hashes in JSON and supports displaying multiple algorithms at once.
- Zero dependencies.
Metadata
Frequently Asked Questions
What is Hashcheck?
Calculate, verify, and compare file hashes using MD5, SHA-1, SHA-256, SHA-512, and BLAKE2b. Use when asked to checksum a file, verify a download hash, compar... It is an AI Agent Skill for Claude Code / OpenClaw, with 120 downloads so far.
How do I install Hashcheck?
Run "/install hashcheck" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Hashcheck free?
Yes, Hashcheck is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Hashcheck support?
Hashcheck is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Hashcheck?
It is built and maintained by rogue-agent1 (@rogue-agent1); the current version is v1.0.0.
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