Hash Tool by langbot-team

# Hash Tool

Zero-dependency hashing/verification (md5, sha1, sha224/256/384/512).

```
python scripts/run.py file.zip
python scripts/run.py file.zip -a md5
python scripts/run.py "hello world" --text -a sha256
python scripts/run.py file.zip -a all
python scripts/run.py file.zip -a sha256 -c 9f86d0818...
cat file.bin | python scripts/run.py -
```

Built on stdlib `hashlib`; streams files in 64KB chunks.


---
name: hash-tool
display_name: Hash Tool
description: "Compute md5/sha1/sha256/sha512 hashes of text or files and verify against an expected digest. Triggers: hash file, sha256, md5 checksum, verify hash, compute digest."
---

# Hash Tool

Compute and verify cryptographic hashes of text or files.

## When to use
The user wants a checksum/digest of some text or a file, or needs to verify a
download/file matches a known hash.

## How to use
Run `scripts/run.py`:
- `python scripts/run.py file.zip` — sha256 of a file (default algo).
- `python scripts/run.py file.zip -a md5` — pick an algorithm.
- `python scripts/run.py "hello" --text -a sha1` — hash a literal string.
- `python scripts/run.py file.zip -a all` — all algorithms at once.
- `python scripts/run.py file.zip -a sha256 -c <expected>` — verify (exit 0 if match).

Read from stdin with `-`, e.g. `cat file | python scripts/run.py -`.

## Pitfalls
- Without `--text`, SOURCE is a filename; use `--text` to hash a literal string.
- Files are hashed as raw bytes; `--text` hashes UTF-8 bytes of the string.
- `--check` requires exactly one algorithm and is case-insensitive; mismatch exits 1.