MCP For Claude Marketplace
Object Hash Engine

Object Hash Engine MCP Connector for Claude

F

Generate deterministic SHA-256 fingerprints of any JSON object. Keys are automatically sorted so {b:2,a:1} and {a:1,b:2} always produce the exact same hash. Essential for deduplication.

1 tools Official Updated Jun 28, 2026 Official Vinkius Partner
More Details Connect to Claude

Your agent needs to check if an API response has changed since the last fetch. It hashes the new JSON and gets a different fingerprint, triggering a massive downstream pipeline update. But the data didn't actually change — the API just returned the keys in a different order.

This MCP uses node-object-hash to generate mathematically consistent SHA-256 fingerprints. It recursively sorts all keys before hashing, guaranteeing that identical data structures always produce identical hashes, regardless of how they were constructed.

The Superpowers

  • Deterministic Hashing: {a:1,b:2} and {b:2,a:1} will yield the exact same SHA-256 hash.
  • Deep Structure Support: Hashes complex nested objects, arrays, nulls, and dates accurately.
  • Cache Invalidation: The perfect tool for building ETags, checking for state drift, and busting caches.
  • Zero Hallucination: Agents can't reliably compare large strings. Hashing gives them a tiny, mathematically absolute proof of equality.
hashingdata-deduplicationsha-256json-processingdeterministic-hashingdata-integrity

1 tools expose this connector's capabilities to your AI agent.

hash_json_object

Generate a deterministic SHA-256 fingerprint of any JSON object. Sorts keys automatically. Essential for deduplication and cache invalidation

See how to talk to your AI agent using Object Hash Engine.

Generate a deterministic hash of this user profile payload so I can check if it already exists in the cache.

Hash calculated: a3b4c5... Even if the keys were reordered, this fingerprint remains exactly the same.

Create an ETag hash for this API response data.

ETag Hash: f8e9d0... Use this in the 'ETag' header to enable strict client-side caching.

We received an event webhook. Hash the event payload to verify if we've already processed this exact event.

Event payload hashed: c2d3e4... Query your idempotent store to ensure this hash hasn't been seen.

If you stringify an object, the key order matters. `JSON.stringify({a:1,b:2})` and `JSON.stringify({b:2,a:1})` result in completely different strings, and thus completely different hashes, even though the data is semantically identical. This engine fixes that.

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