What are execution tokens?

An execution token is a single-use, HMAC-signed proof that a tool execution was authorized.

After confirming a tool is allowed (via permission check or approval), your system calls the token minting endpoint. The token contains a nonce that can only be used once, preventing replay attacks.

Tokens provide cryptographic evidence that:

• The permission was checked before execution
• The specific tool and parameters were authorized
• The token was not reused from a previous execution

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