Unverified50% confidenceSolutionExact time
Key designs to prevent replay include: each approval token contains a unique random number (nonce), is bound to a specific action ID and payload hash, has a short validity period, and its used status is recorded on the server side.
1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe one-time nonce (Number Used Once) mechanism attaches a random string to each authorization credential; after the server consumes it, the nonce is marked as used, and any subsequent request with the same nonce is rejected outright.67% similarUnverifiedEach event must carry a unique identifier (ID) to ensure idempotency, guaranteeing that an invoice is not issued twice when the same event is sent repeatedly.66% similarUnverifiedIdempotency keys are a common means in distributed systems of preventing the same operation from being executed multiple times: the caller carries a globally unique identifier when initiating a request, the server deduplicates on that identifier, and on encountering a duplicate request with the same key it directly returns the first result without re-executing the side effects.66% similarUnverifiedThe agent exchanges the authorization code for an access token at the token endpoint, and after the token expires, it can use a Refresh Token to obtain a new access token without requiring the user to authorize again.65% similar
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