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Idempotency Key Enforcer

Idempotency Key Enforcer MCP Connector for Claude

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Prevents duplicate execution of identical side-effectful operations using an in-memory LRU cache.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

The Idempotency Key Enforcer acts as a safety layer for AI agents performing state-changing tasks. By using the check_idempotency tool, agents can verify if an operation signature has already been processed. This prevents 'double-spending' or redundant writes during retries or agent loops. The server maintains an in-memory LRU cache to track signatures and their corresponding results. You can monitor performance via get_cache_stats and reset the system with clear_cache.

idempotencylru-cacheretry-safetystate-managementai-agents

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

check_idempotency

Check if an operation has been executed before

clear_cache

Clear the idempotency cache

get_cache_stats

Retrieve current cache statistics

See how to talk to your AI agent using Idempotency Key Enforcer.

Check if the operation with signature 'abc-123' has already been run.

{ "isDuplicate": true, "cachedResult": { "status": "success" } }

Process a new database write with signature 'db-write-99' and result 'record_created'.

{ "isDuplicate": false, "cachedResult": null }

Show me the current cache performance metrics.

{ "hitCount": 5, "missCount": 12, "evictionCount": 2 }

It uses an operation signature, which is a deterministic hash of the function name and its sorted arguments. If this exact signature exists in the cache, it is flagged as a duplicate.

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