Checksum suite

All checksums at once: SHA-256 (cryptographic), CRC32 (fast integrity), and Adler-32 (streaming check). Three algorithms, one input, one call.

When to use this pack

An agent needs to verify file or message integrity and wants multiple checksum algorithms for different use cases: SHA-256 for security, CRC32 for quick dedup checks, Adler-32 for streaming validation.

Tools in this pack

• Hash $0.001 POST /api/hash Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests.
• CRC32 $0.001 POST /api/crc32 CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.
• Multi-digest checksum $0.001 POST /api/checksum Compute MD5, SHA-1, SHA-256, SHA-512, and CRC32 checksums of a string in a single call. Useful for verifying file or payload integrity across different checksum standards without needing five separate tools.

Workflow

1. Compute SHA-256 with hash — cryptographically secure, used for content-addressing and tamper detection.
2. Compute CRC32 with crc32 — fast, non-cryptographic, used for quick equality checks and network frame validation.
3. Compute Adler-32 with checksum — lightweight rolling checksum used in zlib/deflate streams and rsync-style delta detection.

Run it in Claude

claude mcp add agent402 -s user -- npx -y agent402-mcp@latest

Then paste this prompt into Claude:

Checksum "file integrity check" using Agent402: (1) hash {text, algo:"sha256"} — SHA-256. (2) crc32 {text} — CRC32. (3) checksum {text, algo:"adler32"} — Adler-32. Return all three checksums.

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