Struct ApprovalToken 

pub struct ApprovalToken {
    pub request_id: String,
    pub code_hash: String,
    pub user_id: String,
    pub session_id: String,
    pub server_id: String,
    pub context_hash: String,
    pub risk_level: RiskLevel,
    pub created_at: i64,
    pub expires_at: i64,
    pub signature: String,
}

Approval token that authorizes code execution.

Fields

request_id: String

Unique request ID (prevents replay attacks)

code_hash: String

SHA-256 hash of the canonicalized code

user_id: String

User ID from the access token

session_id: String

MCP session ID (prevents cross-session usage)

server_id: String

Server that validated the code

context_hash: String

Hash of schema + permissions (detects context changes)

risk_level: RiskLevel

Assessed risk level

created_at: i64

Unix timestamp when token was created

expires_at: i64

Unix timestamp when token expires

signature: String

HMAC signature over all fields above

Implementations

impl ApprovalToken

pub fn encode(&self) -> Result<String, Error>

Encode the token to a string for transport.

pub fn decode(encoded: &str) -> Result<Self, TokenDecodeError>

Decode a token from a string.

Trait Implementations

impl Clone for ApprovalToken

fn clone(&self) -> ApprovalToken

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ApprovalToken

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ApprovalToken

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ApprovalToken

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.